PCS0100en Persy Control Services B.V. Netherlands

Transcription

1 P-Bus Gateway PBGW2.128 Universal gateway between the P-bus protocol and open standard protocols. The variety of available electrical interfaces on the gateway offers a wide range of possibilities for connections to various hardware. Compatible with Siemens DDC equipment 2 P-bus connections for a total of 128 load units Standard RS-232, RS-485 and Ethernet connections for data exchange Standard communication protocol ModBus RTU Dynamic applicability by means of firmware upgrades Many configuration possibilities SD card interface for firmware upgrades and data-storage DIN-rail mountable

2 Functions With the P-bus gateway the P-bus can be controlled and / or monitored by means of an universal data protocol. In this case the gateway also serves as a buffer for data traffic. All information send and received over P-bus is being stored in an internal buffer of the gateway. The same buffer can read and written to via RS-232, RS-485 or Ethernet. P-busses The P-bus is a 3-wire bus connection consisting of a PC-, PU- and PD-line. The system is composed of Siemens PTX rails and PTM I/O-modules. A detailed description can be found on the Siemens website under doc.no. N8022. One P-bus always consists of one master and one or more slaves. The gateway possesses 2 connections for P-bus which can be configured and controlled separately. There are 2 possible operating modes per P-bus connection: Master Mode Slave Mode In Master Mode the gateway will provide the P-bus of 24VDC power on the PU-line for the internal electronics in the slaves (I/O-modules). At the same time the bus will be polled on presence of slaves and data transfer from and to these slaves will be maintained by the gateway. In Slave Mode the gateway acts as a slave on the P-bus which is already being controlled by a master. For example this could be a Siemens DDC controller. The 24VDC on the PU-line already provided by the master is now being utilized by the gateway as a reference voltage for data transfer from and to the master. The gateway will present itself to the master as it were a slave (I/O-module). Communication Configuration Flexibility Data communication between the gateway and other equipment is provided by the international standardized data exchange protocol ModBus RTU. This could be peer-to-peer in the case of RS-232 or RS-485 as well as in a (ether-)network over TCP/IP. Depending on the firmware being present in the gateway other data exchange protocols are also possible. The gateway can be configured with the use of a standard HTML web browser via TCP/IP. Specialized computer software isn t necessary. The configuration data is stored in a non-volatile memory of the gateway and is persistent in case of power failure or restart. The firmware in the gateway can be upgraded by means of a SD card. New firmware releases and applications will be made available for download on our website: The firmware can be stored on a SD card with a standard PC equipped with a SD card reader/writer or ordered directly and loaded into the gateway on-site. Therefore the P-bus Gateway stays an all-round, scalable and dynamic product with a great variety in fields of application. If desired, project specific firmware can be acquired to be able to adapt to your customers needs. 2/12

3 LED presentation LED Color Activity Meaning / problem solving Device 24VAC Green Permanently off No power available check power supply Permanently on Power available STATUS Red Permanently off Device functions properly Permanently on Hardware reset Blinking Hardware ready for firmware upgrade Fast Blinking Firmware upgrade in progress!! Do not switch off the device!! Slow Blinking Hardware failure In case of repeating failure after several attempts to restart, the gateway needs to be replaced P-BUS 1 / P-BUS 2 MASTER Green Permanently off P-bus functions in slave mode Reference voltage on PU-line is being utilized from the bus master Permanently on P-bus functions in master mode Reference voltage on PU-line is being provided by the P-bus Gateway. ACTIVITY Yellow Blinking Data transfer on the P-bus OVERLOAD Red Permanently off P-bus functions properly Permanently on Load units overflow on the P-bus Remove one or more slaves from the P- bus Blinking Short-circuit on the P-bus Check P-bus wiring RS-485 RxD Yellow Blinking Receives data TxD Yellow Blinking Transmits data RS-232 RxD Yellow Blinking Receives data TxD Yellow Blinking Transmits data ETHERNET LINK Green Permanently off No connection Permanently on Connection ready ACTIVITY Yellow Blinking Receives / transmits data packets 3/12

4 Disposal This device contains electric and electronic components and must not be disposed of with domestic waste. Printed circuit board and housing must be disposed of separately. The local and actual regulations must be observed. Technical data General device data Operational data Interface P-bus (2x) Interface RS-485 Interface RS-232 Interface Ethernet Operating voltage AC 24 V ± 10 % Safety extra-low voltage SELV Protective extra-low voltage PELV HD 384 Frequency 50/60 Hz Current consumption Max. 2 A Power consumption Data backup in case of power failure Configuration data (EEPROM) Polling cycle at I/O-modules Transmission speed Signal level Max. 45 VA > 10 years 0,25 s 62,5 KBaud Load units (1 l.u. = 12,5mA) Max. 64 Maximum baud rate Protocol Galvanic isolation Maximum baud rate Protocol Flow control Interface type Bit rate Connector DC +23 V and 0 / 5 V 115,2 KBaud Firmware dependent Yes 115,2 KBaud Firmware dependent RTS/CTS (configurable) 10BASE-T, IEEE compatible 10 MB/s RJ-45 Interface SD card Slot type Standard SD card Dimensions 24 x 32 x 2.1mm Plug-in screw terminals Power supply and signals Stranded or solid conductors, 0, ,5 mm² or 2 x 1,5 mm² Single cable lengths RS-485 P-bus Cable length, special requirements Cross-section RS-485 RS-232 Cable type Ethernet Cable type Twisted-pair, stranded or solid conductors, 2 x 1,0 mm² or Standard CAT5 UTP or STP Max. 50m Max. 200m Min. 3 x 0.75 mm² Max. 30 m Max. 3 m 9-core standard screened cable Max. 100 m Standard CAT5 UTP 4/12

5 Housing protection standard Protection standard to EN Ambient conditions Operation Class 3K5 to IEC 721 Temperature C Humidity < 85 % rh Industry standards Dimensions IP30 Transport Class 2K3 to IEC 721 Temperature C Humidity < 95 % rh Product safety Automatic electronic controls for household and similar use EN Electromagnetic compatibility For use in residential, commercial and light industrial premises Interference immunity EN Emitted interference EN Meets the requirements for CE marking: Electromagnetic compatibility Low Voltage Directive See Dimensions 89/336/EEG 73/23/EEG Weight Including packaging Approx. 600 g 5/12

6 Connection terminals Pin layout Pin Code Description X1 Power supply 1 G AC 24V Phase 2 G0 AC 24V Neutral X2 P-bus 1 X3 P-bus 2 X4 RS PC Synchronization line (clock) 2 PU Reference voltage 3 PD Data line 1 PC Synchronization line (clock) 2 PU Reference voltage 3 PD Data line 1 A Data A 2 B Data B 3 C Shielding (common) Notes The wires of the same twisted pair must be connected to the A and B terminals Screening is not usually necessary X5 RS-232 X6 Ethernet 1 NC Not Connected 2 TxD Transmit Data 3 RxD Receive Data 4 NC Not Connected 5 SGND Signal Ground 6 NC Not Connected 7 CTS Clear To Send 8 RTS Request To Send 9 NC Not Connected 1 TD+ Transmit Data + 2 TD- Transmit Data - 3 RD+ Receive Data + 4 NC Not Connected 5 NC Not Connected 6 RD- Receive Data - 7 NC Not Connected 8 NC Not Connected 6/12

7 Dimensions all dimensions in mm 7/12

8 Connection diagrams P-bus control with universal DDC-Controller In this configuration it is possible to control the P-bus (I/O-modules) with an universal DDC-controller. The electrical connection between the gateway and the DDCcontroller can be established over RS-232, RS-485 or Ethernet. The gateway acts in this case as a transparent connection between the DDC-controller and the P-bus I/O modules. 8/12

9 Data exchange between DDC-controllers over P-bus (with gateway) In this configuration data exchange is possible between two DDC-systems of different brand over P-bus. The gateway acts in this case as a transparent connection between the two DDC-controllers. Each controller manages its own P-bus I/O modules and therefore its own processes. In complementary to this, the gateway creates (configurable) virtual I/O-modules in order to virtually connect the two DDCcontrollers. The virtual I/O-modules behave as if they were tied to each other on hardware level (see next connection diagram without gateway). 9/12

10 Data exchange between DDC-controllers over P-bus (without gateway) 10/12

11 Remote I/O over Ethernet TCP / IP In this configuration it is possible to control a process remotely over Ethernet. The DDC controller is being placed in control cabinet 1a for example and controls a process locally over P-bus. The combination of 2 gateways connected via TCP / IP extends this P-bus to control cabinet 1b from where another process is being controlled. 11/12

12 I/O monitoring In this configuration it is possible to monitor processes over P-bus. All signals from and to the DDC-controller are being monitored by the gateway and can be readout / visualized with a remote protocol Subject to changes 12/12