SIMATIC. S7-300 Programmable Controller Installation and Hardware. Preface, Contents. Product Overview 1. Mechanical Configuration 2

Transcription

1 SIMATIC S7-300 Programmable Controller Installation and Hardware Manual This Manual is Part of the Documentation Package with the Order Number: 6ES AA02-8BA0 Preface, Contents Product Overview 1 Mechanical Configuration 2 Addressing the S7-300 Modules 3 Electrical Configuration 4 Installing an S Wiring an S Configuring an MPI or PROFIBUS Subnet 7 Preparing an S7-300 for Operation and Start-up of PROFIBUS-DP 8 Changing the Backup Battery/ Rechargeable Battery, Module and Fuses 9 CPUs 10 CPU DP as DP Master/ DP Slave 11 Cycle Time and Response Time of the S Appendices Glossary, Index Edition 2

2 Safety Guidelines! This manual contains notices which you should observe to ensure your own personal safety, as well as to protect the product and connected equipment. These notices are highlighted in the manual by a warning triangle and are marked as follows according to the level of danger: Danger indicates that death, severe personal injury or substantial property damage will result if proper precautions are not taken.! Warning indicates that death, severe personal injury or substantial property damage can result if proper precautions are not taken.! Caution indicates that minor personal injury or property damage can result if proper precautions are not taken. Note draws your attention to particularly important information on the product, handling the product, or to a particular part of the documentation. Qualified Personnel Only qualified personnel should be allowed to install and work on this equipment. Qualified persons are defined as persons who are authorized to commission, to ground, and to tag circuits, equipment, and systems in accordance with established safety practices and standards. Correct Usage Note the following:! Warning This device and its components may only be used for the applications described in the catalog or the technical description, and only in connection with devices or components from other manufacturers which have been approved or recommended by Siemens. This product can only function correctly and safely if it is transported, stored, set up, and installed correctly, and operated and maintained as recommended. Trademarks SIMATIC and SIMATIC NET are registered trademarks of SIEMENS AG. Third parties using for their own purposes any other names in this document which refer to trademarks might infringe upon the rights of the trademark owners. Copyright Siemens AG 1994 All rights reserved The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utility model or design, are reserved. Siemens AG Automation Group Industrial Automation Systems P.O. Box 4848, D Nuremberg Siemens Aktiengesellschaft Disclaimer of Liability We have checked the contents of this manual for agreement with the hardware and software described. Since deviations cannot be precluded entirely, we cannot guarantee full agreement. However, the data in this manual are reviewed regularly and any necessary corrections included in subsequent editions. Suggestions for improvement are welcomed. Technical data subject to change. Siemens AG 1994

3 Preface Purpose of this Manual The information contained in this manual will help you with the following: Install and wire an S7-300 programmable controller, and Look up operator entries, functional descriptions and the technical specifications relevant to the S7-300 s CPUs. You will find the function descriptions and technical specifications for the signal modules, power supply modules and interface modules in the Module Specifications Reference Manual. Documentation Package This documentation package with the order number 6ES AA02-8BA0 comprises two manuals and an instruction list with the following contents: S7-300 Programmable Controller, Hardware and Installation S7-300, M7-300 Programmable Controllers, Module Specifications Instruction List Mechanical and electrical configuration Installation and wiring Preparing the S7-300 for operation Characteristics and technical data for the S7-300 CPUs General technical data Power supply modules Digital modules Analog modules Order numbers for S7-300 Instruction set for all CPUs Brief description of instructions and execution times in relation to the individual CPUs A detailed description of all instructions with examples can be found in the STEP 7 Manuals (see Appendix G). You can also order the Instruction List separately: 6ES AA02-8BN0 iii

4 Preface Scope of this Manual This manual applies for the following CPUs: CPU Order No. From Version CPU 312 IFM 6ES AC01-0AB0 01 CPU 313 6ES AD02-0AB0 01 CPU 314 6ES AE03-0AB0 01 CPU 314 IFM 6ES AE02-0AB0 01 CPU 315 6ES AF02-0AB0 01 CPU DP 6ES AF02-0AB0 01 CPU 316 6ES AG00-0AB0 01 This manual describes all modules that are valid at the time the manual is released. For new modules or newer versions of modules, we reserve the option to add to the manual a product information containing the current information on this module. Changes Since the Previous Version The following changes have been made since the previous version (S7-300 Programmable Controller, Hardware and Installation Manual, Order No. 6ES AA01-8BA0, Edition 1): The CPU 316 has been included in the manual The CPUs have been expanded with the following functions: 19.2 kbaud for the MPI Forcing of variables SFC RD_DPARM Password protection Cycle time limiting for test functions HOLD mode Downloading of a user program from the programming device via the CPU onto a memory card and the possibility of updating the operating system via memory card (not for CPUs 312 IFM and 314 IFM). Standards and Approvals The S7-300 programmable controller meets the requirements and criteria of standard IEC 1131, Part 2. The S7-300 meets the requirements for the CE mark. Approvals for CSA, UL and FM have been granted for the S See Appendix A for detailed information on standards and approvals. iv

5 Preface Recycling and Disposal The SIMATIC S7-300 is an environmentally-friendly product! The essential features of the SIMATIC S7-300 include: A halogen-free flameproofing of the plastic housing despite its high level of fireproofing Laser labeling (that is, no paper labels) Plastics materials labeled in accordance with DIN Reduction in materials used thanks to more compact design and fewer components through integration in ASICs The SIMATIC S7-300 can be recycled thanks to the low level of pollutants in its equipment. Please contact the following address for environmentally-friendly recycling and disposal of your old SIMATIC equipment: Siemens Aktiengesellschaft Anlagenbau und Technische Dienstleistungen ATD TD 3 Kreislaufwirtschaft Postfach D Erlangen Telephone: / Telefax: / This Siemens service department provides a comprehensive and flexible disposal system with customized advice at a fixed price. After disposal, you receive a breakdown of the dismantling procedure with information on the proportions of materials and the relevant material record documentation. v

6 Preface Scope of the Documentation Package Depending on the CPU, you require the following documentation for installing your S7-300: The following documentation is required for installing the S7-300 and for preparing it for operation: Hardware and Installation, Manual Reference Manual Module Specs. Instruction List Documentation package Order No. 6ES AA02-0BA0 For CPUs 312 IFM and 314 IFM, you will also require the description of the integrated functions and the control functions in STEP 7: Integrated Functions Manual Order No. 6ES CA00-8BA0 System and Standard Functions Reference Manual Order No. 6ES CA02-4BR0 Documentation for Programming Appendix G contains a list of documentation, which you require for programming and starting up the S In addition, you will find a list of specialist books on programmable controls. CD-ROM Furthermore, the complete SIMATIC S7 documentation will be available on CD-ROM. How to use this Manual To help you find special information quickly, the manual contains the following access aids: At the start of the manual you will find a complete table of contents and a list of the diagrams and tables that appear in the manual. An overview of the contents of each section is provided in the left column on each page of each chapter. You will find a glossary in the appendix at the end of the manual. The glossary contains definitions of the main technical terms used in the manual. At the end of the manual you will find a comprehensive index which gives you fast access to the information you need. vi

7 Preface Additional Assistance Please contact your local Siemens representative if you have any queries about the products described in this manual. A list of Siemens representatives worldwide is contained in the appendix to this manual. If you have any questions or suggestions concerning this manual, please fill in the form at the end of this manual and return it to the specified address. Please feel free to enter your personal assessment of the manual in the form provided. We offer a range of courses to help get you started with the SIMATIC S7 programmable controller. Please contact your local training center or the central training center in Nuremberg, D Germany, Tel Up-to-date Information You can receive up-to-date information on SIMATIC products from the following sources: On the Internet at Via fax polling number In addition, the SIMATIC Customer Support provides up-to-date information and download facilities for users of SIMATIC products: On the Internet at cs Via the SIMATIC Customer Support mailbox under the following number: For dialing into the mailbox, use a modem of up to V.34 (28.8 Kbaud) and set the following parameters: 8, N, 1, ANSI, or alternatively use ISDN (x.75, 64 Kbit). You can reach the SIMATIC Customer Support by telephone at +49 (911) and by fax at +49 (911) Queries can also be addressed to us by Internet mail or by mail to the mailbox specified above. vii

8 Preface viii

9 Contents Preface 1 Product Overview 2 Mechanical Configuration 2.1 Horizontal and Vertical Arrangement of an S Mounting Dimensions of the S The Module Arrangement for an S7-300 Configuration on One Rack The Module Arrangement for an S7-300 Configuration on Several Racks (not CPU 312 IFM/313) Addressing the S7-300 Modules 3.1 Slot-Oriented Addressing for Modules (Default Addressing) User-Oriented Address Allocation with the CPU DP Addressing Signal Modules Addressing the Integrated Inputs and Outputs of the CPUs 312 IFM and 314 IFM Electrical Configuration 4.1 General Rules and Guidelines for Operating an S7-300 Programmable Controller Current Consumption and Power Losses of an S Configuring the S7-300 Process Peripherals S7-300 Configuration with Grounded Reference Potential S7-300 Configuration with Ungrounded Reference Potential (not CPU 312 IFM) S7-300 Configuration with Isolated Modules Configuration of an S7-300 with Non-Isolated Modules Cabling Inside Buildings Cabling Outside Buildings Protecting Digital Output Modules Against Induced Overvoltage Lightning Protection Lightning Protection Zone Concept Rules for the Transition between Lightning Protection Zones Rules for Transition between Lightning Protection Zones 1 2 and Greater Example Circuit for Surge Protection of Networked S7-300s ix

10 Contents 5 Installing an S Installing the Rail Module Accessories Installing the Modules on the Rail Identifying the Modules with Slot Numbers Wiring an S Wiring Rules Wiring the Power Supply Module and CPU Setting the Power Supply Voltage Selector Switch Wiring the Front Connectors of the Signal Modules Connecting Shielded Cables Using the Shield Connecting Element Configuring an MPI or PROFIBUS Subnet 7.1 Configuring a Subnet Basic Principles Special Considerations for CPs and FMs Rules for Configuring a Subnet Cable Lengths Network Components PROFIBUS Bus Cable Bus Connectors Plugging the Bus Connector into a Module RS 485 Repeater Preparing an S7-300 for Operation and Start-up of PROFIBUS-DP 8.1 Plugging in the Memory Card (Not CPU 312 IFM/314 IFM) Inserting the Backup Battery/Rechargeable Battery (Not CPU 312 IFM) Connecting a Programming Device Connecting a Programming Device to an S Connecting a Programming Device to Several Nodes Connecting a Programming Device to Ungrounded Nodes of an MPI Subnet Resetting the CPU Memory PROFIBUS-DP Startup Startup of the CPU DP as a DP Master Startup of the CPU DP as a DP Slave Changing the Backup Battery/Rechargable Battery, Module and Fuses 9.1 Changing the Backup/Rechargeable Battery (not CPU 312 IFM) Replacing Modules Replacing Fuses on 120/230 VAC Digital Output Modules x

11 Contents 10 CPUs 10.1 Performance Characteristics Mode Selector, LEDs and Test Functions Connection of the Power Supply Unit Multipoint Interface (MPI) Clock and Operating Hours Counter Blocks Parameters Startup Register Scan Cycle/Clock Memories Register Retentive Areas Register Interrupts Register Time-of-Day Interrupts Register (not CPU 312 IFM) Cyclic Interrupts Register (not CPU 312 IFM) Diagnostics/Clock Register MPI Addresses Parameter Block in General Register Integrated I/O Register (CPU 312 IFM, 314 IFM Only) Protection/Mode Register CPUs Technical Specifications CPU 312 IFM CPU CPU CPU 314 IFM CPU CPU DP CPU CPU DP as DP Master/DP Slave 11.1 DP Address Areas CPU DP as DP Master CPU DP as a DP Slave Type File Diagnostic Data for the CPU DP as DP Slave General Information on Diagnostics Format of the Slave Diagnostic Data Station Status 1 to Format of the Master PROFIBUS Address and the Manufacturer Identification Format of the Identification-Related Diagnostic Data Format of the Device-Related Diagnostic Data Parameter Assignment Frame and Configuring Frame Format of the Parameter Assignment Frame Format of the Configuring Frame (S7 Format) Format of the Configuring Frame for Non-S7 DP Masters xi

12 Contents 12 Cycle Time and Response Time of the S7-300 A 12.1 Cycle Time Response Time Calculation Examples for Cycle Time and Response Time Interrupt Response Time Calculation Example for the Interrupt Response Time Reproducibility of Delay and Cyclic Interrupts Standards and Approvals B Execution Times of SFCs/SFBs and IEC Functions B-1 C D E B.1 SFCs und SFBs B-2 B.2 IEC Timers and IEC Counters B-10 B.3 IEC Functions B-11 System Status List in the CPUs Dimension Drawings Guidelines for Handling Electrostatic Sensitive Devices (ESD) E.1 What is ESD? E-2 E.2 Electrostatic Charging of Persons E-3 E.3 General Protective Measures against Electrostatic Discharge Damage.. E-4 F Spare Parts and Accessories for the CPUs of the S7-300 G H I J SIMATIC S7 Reference Literature Safety of Electronic Control Equipment Siemens Worldwide List of Abbreviations Glossary Index xii

13 Contents Figures 1-1 Components of an S Horizontal and Vertical Arrangements of an S Clearances Applying to a Standard S7-300 Configuration on One Rack Clearances Applying to a Standard S7-300 Configuration on Several Racks Module Arrangement for an S7-300 Programmable Controller Mounted on One Rack The Module Arrangement in a Four-Rack S7-300 Configuration Slots of the S Address Area of the CPU DP (Inputs) Address Area of the CPU DP (Outputs) Addresses of the Inputs and Outputs of Digital Modules Addresses of the Inputs and Outputs of the Digital Module in Slot Addresses of the Inputs and Outputs of the Analog Module in Slot Signal Modules Operated on a Grounded Incoming Supply Signal Modules Powered from the PS S7-300 with CPUs 313/314/314 IFM/315/315-2 DP/316 with Grounded Reference Potential S7-300 with CPUs 313/314/314 IFM/315/315-2 DP/316 with Grounded Reference Potential Simplified Schematic of a Configuration with Isolated Modules Schematic of the Electrical Configuration with the Non-Isolated Analog Input/Output Module SM 334; AI 4/AO 2 8/8 Bit Relay EMERGENCY OFF Contact in the Output Circuit Suppressor Circuit with DC-Operated Coils with Diodes and Zener Diodes Suppressor Circuit with AC-Operated Coils Lightning Protection Zones of a Building Example for Interconnecting Networked S7-300s Fixing Holes of the 2 m/6.56 ft. Rail Connecting the Protective Grounding Conductor to the Rail Plugging Bus Connectors into Modules Hook the CPU onto the Rail and Swing it Down into Place Hook the Signal Module onto the Rail and Swing it Down into Place Bolting a Module to the Rail Inserting the Key in the CPU Attaching Slot Numbers to the Modules Wiring the PS 307 Power Supply Module and the CPU Using a Power Connector Voltage Selector Switch on the PS Bringing the Front Connector into the Wiring Position Signal Module Assembly with Shield Connecting Element Attaching Shielded 2-Wire Cables to a Shield Connecting Element Terminating Resistor on the Bus Connector Terminating Resistor on the RS 485 Repeater Connecting a Terminating Resistor in an MPI Subnet Example of an MPI Subnet Example of a PROFIBUS Subnet Example of a Configuration with the CPU DP in an MPI and PROFIBUS Subnet Maximum Cable Length between Two RS 485 Repeaters xiii

14 Contents 7-8 Cable Lengths in an MPI Subnet Bus Connectors 6ES7... : Terminating Resistor Activated and Deactivated Removing the Slide on the RS 485 Repeater Lengths of the Stripped Insulation for Connection to the RS 485 Repeater Plugging the Memory Card into the CPU Inserting a Backup Battery in the CPUs 313/ Connecting a Programming Device to an S Connecting a Programming Device with Several S7-300s Connecting a Programming Device to a Subnet Programming Device Connected to an Ungrounded S Switching Sequence for the Mode Selector for Resetting the CPU Changing the Backup Battery in the CPUs 313/ Unlocking the Front Connector and Detaching the Module from the Rail Removing the Front Connector Coding Key Installing a New Module Plugging In the Front Connector Location of the Fuses on Digital Output Modules Status and Fault LEDs on the CPUs Principle of Forcing with S7-300 CPUs Clock Periods in the Clock Memory Byte Signalling the Status of the Interrupt Inputs of the Integrated I/O Elements of the CPU 312 IFM Terminal Connections of the CPU 312 IFM Basic Circuit Diagram of the CPU 312 IFM Elements of the CPU Elements of the CPU Elements of the CPU 314 IFM Terminal Connections of the CPU 314 IFM Basic Circuit Diagram of the CPU 314 IFM (Special Inputs and Analog Inputs and Outputs) Basic Circuit Diagram of the CPU 314 IFM (Digital Inputs and Outputs) Elements of the CPU Elements of the CPU DP Elements of the CPU Intermediate Memory in the DP Slave CPU DP Diagnostic Addresses for DP Master and DP Slave Format of the Slave Diagnostic Data Format of the Identifier-Related Diagnostic Data Format of the Device-Related Diagnostic Data Bytes 13 to 16 for Diagnostic and Process Interrupts Standardized Portion of the Parameter Assignment Frame (example) Parameters for the CPU DP Description of Byte 0 of the CPU s Address Area Identifiers Description of Byte 1 of the CPU s Address Area Identifiers Component Parts of the Cycle Time Shortest Response Time Longest Response Time Overview of the Bus Runtime on PROFIBUS-DP at 1.5 Mbit/s and 12 Mbit/s xiv

15 Contents C-1 Header Information of a Sublist of the System Status List C-2 C-2 Structure of the SZL-ID of the Sublist C-2 D-1 Dimension Drawing of the CPU 312 IFM D-1 D-2 Dimension Drawing of the CPUs 313/314/315/315-2 DP/ D-2 D-3 Dimension Drawing of the CPU 314 IFM, Front View D-3 D-4 Dimension Drawing of the CPU 314 IFM, Side View D-4 E-1 Electrostatic Voltages which can Build up on a Person E-3 Tables 1-1 Components of an S Permissible Ambient Temperatures for Horizontal and Vertical Arrangements Mounting Dimensions of the S7-300 Modules Interface Modules IM360/IM361 for a Configuration on Several Racks Connecting Cables for Interface Modules IM 365 Interface Module for a Configuration on Two Racks Start Addresses for the Signal Modules User-Oriented Address Allocation: Accessing the Address Areas Integrated Inputs and Outputs of the CPU 312 IFM Integrated Inputs and Outputs of the CPU 314 IFM Current Consumption and Power Losses of the S7-300 Modules (24 VDC Load Power Supply) Current Consumptions and Power Losses of the S7-300 Modules (120/230 VAC Load Power Supply) Power Losses of the Power Supply Modules Current Consumption and Power Loss Balance VDE Specifications for Configuring a PLC System Cabling Inside Buildings High-Voltage Protection of Cables Using Surge Protection Components Low-Voltage Protection for Lightning Protection Zone Low-Voltage Protection for Lightning Protection Zone Example of a Configuration Fulfilling Lightning Protection Requirements (Legend for Fig. 4-11) Fixing Holes for Rails Module Accessories Slot Numbers for S7 Modules Wiring Rules Making the Connections Preparing the Signal Module for Operation Assignment of Cable Cross-Sections and Terminal Elements Permissible MPI/PROFIBUS Addresses Assignment of MPI Addresses for Programmable Modules Permissible Cable Lengths in an MPI Subnet Segment Permissible Cable Lengths in a PROFIBUS subnet Depending on the Baud Rate Lengths of Spur Lines per Segment Network Components Properties of PROFIBUS Bus Cable Specifications for Installation of Indoor Bus Cable Memory Cards for CPU 313/314/315/315-2 DP Using either Backup Battery or Rechargeable Battery xv

16 Contents 8-3 Possible Reasons for MRES Request by CPU Internal CPU Events on Memory Reset Performance Characteristics of the CPUs Test Functions of CPUs Power Supply Terminals of the CPUs Communication Features via the MPI of the CPU Characteristics of the Clock for the CPUs Overview: Blocks of the CPUs OBs for Scan Cycle and Restart OBs for Internal and External Interrupts OBs for Error/Fault Response Registers of the CPUs Startup Parameter Block Scan Cycle Parameter Block Clock Memories Parameter Block Retentive Areas Parameter Block Hardware Interrupts Parameter Block Time-of-Day Interrupts Parameter Block Cyclic Interrupts Parameter Block Diagnostics Parameter Block Clock Parameter Block MPI Addresses Parameter Block Interrupt Inputs Parameter Block Start Information for OB 40 for the Interrupt Inputs for the Integrated I/O Protection Parameter Block Mode Parameter Block Characteristic Features of the Integrated Inputs and Outputs of the CPU 314 IFM CPU DP Address Areas and Their Sizes Description of the BUSF and SF DP LEDs on a CPU DP Configured as DP Master Description of the BUSF and SF DP LEDs on a CPU DP Configured as DP Slave Configuring Example for the Address Areas in the Intermediate Memory Responses to Status Changes or Interruptions of Useful Data Transfers in DP Master and DP Slave Evaluating RUN-STOP Transitions in the DP Master/DP Slave Function Blocks for Slave Diagnostics Format of Station Status Format of Station Status Format of Station Status Format of the Master PROFIBUS Address (Byte 3) Format of the Manufacturer Identification (Bytes 4 and 5) Format of the Configuring Frame Identifiers for the Address Areas of the Intermediate Memory Format of the Configuring Frame for Non-S7 DP Masters Operating System Execution Times of the CPUs Process Image Update of CPUs CPU-specific Factors for the User Program Execution Time Updating the S7 Timers Update Time and SFB Runtimes xvi

17 Contents 12-6 Cycle Extension through Nesting of Interrupts Process Interrupt Response Times of the CPUs Diagnostics Interrupt Response Times of the CPUs Reproducibility of the Delay and Cyclic Interrupts of the CPUs C-1 Sublists of the System Status List of the CPUs C-3 C-2 Sublists of the System Status List of the CPU DP as DP Master.. C-8 F-1 Accessories and Spare Parts F-1 G-1 Manuals for Configuring and Programming the S G-1 G-2 Manuals for PROFIBUS-DP G-3 xvii

18 Contents xviii

19 Product Overview 1 Modular Design The S7-300 has a modular design. You can set up your own individual system by combining components from a comprehensive range of S7-300 modules. The range of modules includes the following components: CPUs for various performance ranges Signal modules for digital and analog input/output(see Module Specifications Reference Manual) Function modules for technological functions (see the relevant function module manual for a description). CP communication processors (see the communication processor manual for a description) Load power supply modules for connecting the S7-300 to 120/230 VAC power supplies (see Module Specifications Reference Manual) Interface modules for the interconnection of racks in multi-rack installations (see Module Specifications Reference Manual) All of the S7-300 modules are contained in housings protected to IP 20, i.e. they are encapsulated and can be operated without a fan. In this Chapter In this chapter, we will introduce you to the most important components that go to make up an S

20 Product Overview Configuring an S7-300 An S7-300 programmable controller is made up of the following components: Power supply (PS) CPU Signal modules (SM) Function modules (FM) Communication processor (CP). Several S7-300s can communicate with each other over PROFIBUS bus cables. You require a programming device to program the S You hook the programming device up to the S7-300 with a special programming device cable. Fig. 1-1 shows a possible configuration with two S7-300 programmable controllers. The components in the shaded area are described in this manual. Power supply (PS) Central processing unit CPU Signal module (SM) PROFIBUS bus cable Programming device cable Figure 1-1 Components of an S

21 Product Overview Components of an S7-300 You have a number of components at your disposal for installing and starting up an S7-300 programmable controller. Table 1-1 lists the major components and their functions: Table 1-1 Components of an S7-300 Rail Components Function Illustration... accommodates the S7-300 modules Accessory: Shield connection element Power supply (PS)... converts the power system voltage (120/230 VAC) into 24 VDC for the S7-300 and load power supply for 24 VDC load circuits CPU Accessory: CPU 313/314/315/315-2 DP/ 316 Memory Card Backup battery (or accumulator for real-time clock; except on CPU 313) CPU 314 IFM Backup battery (or accumulator for real-time clock) Front connector CPU 312 IFM Front connector Signal modules (SMs) (digital input modules, digital output modules, digital input/output modules analog input module analog output module analog input/output modules)... executes the user program; provides the 5 V supply for the S7-300 backplane bus; communicates with other nodes in an MPI network via the MPI (multipoint interface). You can also use the CPU DP in a PROFIBUS subnet: as a DP master as a DP slave on an S7/M7 DP master or another DP master.... match different process signal levels to the S7-300 Accessory: Front connector 1-3

22 Product Overview Table 1-1 Components of an S7-300, continued Components Function modules (FM) Accessory: Front connector Function... for time-critical and memoryintensive process signal processing tasks, for example, positioning or closed-loop control Illustration Communication processor (CP) Accessory: Connecting cable SIMATIC TOP connect Accessory: Front connector module with ribbon cable connection Interface module (IM) Accessory: Connecting cables... relieves the CPU of communication tasks, for example, CP DP for connection to PROFIBUS-DP.... for wiring of the digital modules... interconnects the individual tiers of an S7-300 PROFIBUS cable with bus connector... interconnects stations on an MPI or PROFIBUS subnet Programming device cable... connects a CPU to a programming device/pc RS 485 repeater... for amplifying the signals in an MPI or PROFIBUS subnet and for connecting segments in these systems Programming device or PC with the STEP 7 software package... configures, initializes, programs and tests the S

23 Mechanical Configuration 2 Introduction You will need to understand the following when installing an S7-300: The mechanical configuration and The electrical configuration. Please therefore also read Chapter 4 Electrical Configuration. Open Components The modules of an S7-300 are open components. That means you can only install the S7-300 in housings, cabinets or electrical equipment rooms which are only accessible by key or a special tool. Only trained or authorized personnel should have access to the housings, cabinets or electrical equipment rooms. In this Chapter This chapter contains the following sections on the mechanical configuration of the S7-300: Section Contents Page 2.1 Horizontal and Vertical Arrangements of an S Mounting Dimensions of the S The Module Arrangement for an S7-300 Configuration on One Rack 2.4 The Module Arrangement for an S7-300 Configuration on Several Racks (not CPU 312 IFM/313)

24 Mechanical Configuration 2.1 Horizontal and Vertical Arrangement of an S7-300 Mounting Arrangement You can mount your S7-300 in either a horizontal or vertical position. Fig. 2-1 shows the two possible mounting arrangements. Horizontal mounting Vertical mounting Figure 2-1 Horizontal and Vertical Arrangements of an S7-300 Location of the CPU You must locate the CPU and the power supply at the extreme left of the mounting rail. Permissible Ambient Temperature You can take the permissible ambient temperatures for both horizontal and vertical mounting arrangements from Table 2-1: Table 2-1 Permissible Ambient Temperatures for Horizontal and Vertical Arrangements Arrangement Horizontal mounting Vertical mounting Permissible Ambient Temperature 0 to 60 C 0 to 40 C 2-2

25 Mechanical Configuration 2.2 Mounting Dimensions of the S7-300 Introduction This section describes the various mounting dimensions for an S7-300 on one or more racks. Clearances for a Configuration on One Rack Fig. 2-2 shows the necessary clearances to adjacent cable ducts, equipment, cabinet walls etc. for standard S7-300 configurations on one rack. 40 mm (1.56 in.) 20 mm (0.78 in.) 20 mm (0.78 in.) 40 mm (1.56 in.) Figure 2-2 Clearances Applying to a Standard S7-300 Configuration on One Rack If you observe these clearances you will guarantee the necessary heat dissipation of the S7-300 modules, you will have adequate space for plugging in and withdrawing the S7-300 modules, and you will have sufficient space for running cables. Note If you use a shield connecting element (see Section 6.5), the dimension specifications apply from the bottom edge of the shield connecting element. 2-3

26 Mechanical Configuration Clearances for a Configuration on Several Racks Fig. 2-3 shows the necessary clearances between the individual racks and to the adjacent equipment, cable ducts, cabinet walls etc. for standard S7-300 configurations on several racks. 40 mm (1.56 in.) for example, cable duct 40 mm (1.56 in.) ÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 40 mm (1.56 in.) a 200 mm + a (7.8 in.) 20 mm (0.78 in.) 40 mm (1.56 in.) 20 mm (0.78 in.) Figure 2-3 Clearances Applying to a Standard S7-300 Configuration on Several Racks If you observe these clearances you will guarantee the necessary heat dissipation of the S7-300 modules, you will have adequate space for plugging in and withdrawing the S7-300 modules, and you will have sufficient space for running cables. Note If you use a shield connecting element (see Section 6.5), the dimension specifications apply from the bottom edge of the shield connecting element. 2-4

27 Mechanical Configuration Module Mounting Dimensions Table 2-2 contains an overview of the mounting dimensions of the various S7-300 modules. Table 2-2 Mounting Dimensions of the S7-300 Modules Power supply PS 307, 2 A Power supply PS 307, 5 A Power supply PS 307, 10 A CPU 31x/312 IFM, CPU 314 IFM Modules Module Width Module Height Max. Mounting Depth Digital input module SM 321 Digital output module SM 322 Relay output module SM 322 Digital input/output module SM 323 Simulator module SM 374 Analog input module SM 331 Analog output module SM 332 Analog input/output module SM 334 Interface module IM 360 Interface module IM 361 Interface module IM mm (1.95 in.) 80 mm (3.12 in.) 200 mm (7.8 in) 80 mm (3.12 in.) 160 mm (6.24 in.) 40 mm (1.56 in.) 40 mm (1.56 in.) 40 mm (1.56 in.) 80 mm (3.12 in.) 40 mm (1.56 in.) 125 mm (4.88 in.) (or 185 mm (7.22 in.) with shield connecting element) 130 mm or 180 mm (7.02 in.) with front door of CPU and IM 361 open (195 mm (8.00 in.) for CPU 312 IFM) Rail Lenghts Depending on your S7-300 configuration, you can use rails with the following lengths: Rail 160 mm (6.24 in.) mm (18.82 in.) 530 mm (20.67 in.) 830 mm (32.37 in.) up to 2000 mm (78 in.) Usable Length for Module 120 mm (4.68 in.) 450 mm (17.55 in.) 480 mm (18.72 in.) 780 mm (30.42 in.) Cut to length required Special Widths Special widths are possible with 2 m (6.56 ft.) long rails. You can shorten the 2 m (6.56 ft.) rail to the length you require (see Section 5.1). Special Heights If you connect shielded cables to the signal modules, you can connect the shield directly to the rail, using shield connecting elements (see Section 6.5 ). This increases the mounting height of the S7-300 rack, however, to 185 mm (7.22 in.)! Despite this, you must maintain the clearance of 40 mm (1.56 in.). 2-5

28 Mechanical Configuration 2.3 The Module Arrangement for an S7-300 Configuration on One Rack Introduction The following sections explain the rules governing the arrangement of the modules for an S7-300 programmable controller mounted on one rack. Rules The following rules apply to the arrangement of the modules on one rack: No more than eight modules (SM, FM, CP) may be mounted to the right of the CPU. The number of modules (SM, FM, CP) that can be plugged in is limited by the amount of power they draw from the S7-300 s backplane bus (see Tables 4-1 or 4-2 and the technical specifications of the individual modules). The total power drawn from the S7-300 backplane bus by all the modules on one rack must not exceed for the CPUs 313/314/314 IFM/315/315-2 DP/ A for the CPU 312 IFM 0.8 A Maximum Configuration for an S7-300 Mounted on One Rack Fig. 2-4 shows how the modules are arranged on an S7-300 programmable controller with eight signal modules. PS CPU SM/FM/CP Figure 2-4 Module Arrangement for an S7-300 Programmable Controller Mounted on One Rack 2-6

29 Mechanical Configuration 2.4 The Module Arrangement for an S7-300 Configuration on Several Racks (not CPU 312 IFM/313) Introduction The following sections explain the rules governing the arrangement of the modules in an S7-300 configuration consisting of several racks. Note The CPU 312 IFM and CPU 313 can only be used for a configuration on one rack. Rules The following rules apply to the arrangement of the modules: The interface module is always located in slot 3, to the left of the first signal module. No more than 8 modules (SM, FM, CP) are permitted per rack. The modules (SM, FM, CP) are always located to the right of the interface modules. Exception: In the case of the CPU 314 IFM, a module must not be plugged into slot 11 on rack 3 (see Chapter 3)! The number of modules (SM, FM, CP) that can be plugged in is limited by the permissible current drawn from the S7-300 backplane bus. The total current consumption per tier or rack must not exceed 1.2 A (see Tables 4-1 or 4-2 and the technical specifications of the modules). Requirement: Interface Modules If you mount the S7-300 on several racks, you require interface modules. The task of the interface modules is to connect the S7-300 backplane bus from one rack to the next. The CPU is always in rack 0. Table 2-3 shows an overview of the interface modules for a configuration with two to four racks. Table 2-3 Interface Modules IM360/IM361 for a Configuration on Several Racks Interface Module Used for Rack(s) Order No. IM 360 Rack 0 6ES AA01-0AA0 IM 361 Rack 1 to 3 6ES CA01-0AA0 2-7

30 Mechanical Configuration Connecting Cables for Interface Modules The following cables are available for connecting interface modules: Table 2-4 Connecting Cables for Interface Modules Length Order No. of the Connecting Cable 1 m (3.28 ft.) 6ES BB01-0AA0 2.5 m (8.2 ft.) 6ES BC51-0AA0 5 m (16.4 ft.) 6ES BF01-0AA0 10 m 6ES CB01-0AA0 Version for a Configuration on 2 Racks The S7 300 uses the IM 365 interface module version for a configuration on 2 racks. The two interface modules are already permanently connected across a 1 m long cable. If you use the IM 365 interface modules, then you can use only signal modules on rack 1. The total current consumption of the signal modules plugged in both racks must not exceed 1.2 A; the current consumption of rack 1 is limited to 800 ma. Table 2-5 shows an overview of the IM 365 interface module for a configuration on 2 racks. Table 2-5 IM 365 Interface Module for a Configuration on Two Racks Interface Module Used for Rack(s) Order No. IM 365 SEND Rack 0 6ES BA00-0AA0 IM 365 RECEIVE Rack 1 2-8

31 Mechanical Configuration Maximum Configuration Fig. 2-5 shows the module arrangement in an S7-300 configuration with four racks (CPU 314/314 IFM/315/315-2 DP/316 only). not for CPU 314 IFM (see Chapter 3) Rack 3 IM Connecting cable 368 Rack 2 IM Connecting cable 368 Rack 1 IM Connecting cable 368 Rack 0 PS CPU IM SMs Figure 2-5 The Module Arrangement in a Four-Rack S7-300 Configuration 2-9

32 Mechanical Configuration 2-10

33 Addressing the S7-300 Modules 3 Introduction In this chapter, you will learn about the different ways of addressing the individual channels of the signal modules. Slot-Oriented Address Allocation Slot-oriented address allocation is the default addressing method on the S7, i.e. a defined module start address is allocated to each slot number. User-Oriented Address Allocation With user-oriented address allocation, you can allocate any address within the available CPU address area to any module. User-oriented address allocation on the S7-300 is only possible with the CPU DP. Further Information You will find further information on addressing in the STEP 7 documentation. In this Chapter This chapter describes the addressing of the S7-300: Section Contents Page 3.1 Slot-Oriented Addressing for Modules (Default Addresses) 3.2 User-Oriented Addressing with the CPU DP Addressing Signal Modules Addressing the Integrated Inputs and Outputs of the CPU 312 IFM und CPU 314 IFM