MOD-MBUS Modbus to M-Bus Converter Module

Transcription

1 Product sheet SW4.05 Type MOD-MBUS MOD-MBUS Modbus to M-Bus Module MOD-MBUS modules offer an easy-to-use and cost effective solution to collect data from MBUS devices (water meter, heat meter, current meter, gas meter). Due to the open MODBUS RTU standard the M-bus meters can easily be integrated to Modbus compatible systems such as most building management systems. The meters from which data is read are configured via PC configuration software. The modules can be configured for communication with RS232 or RS485. The MOD-MBUS module periodically sends queries to the MBUS devices connected and stores the data internally in MODBUS holding register. The Modbus master (e.g. BMS, PLC, Sedona Controllers) can then read the stored values via MODBUS RTU master protocol. Features Support for up to 2, 8, 2,and 48 M-bus Easy configuration using template based PC configuration software; large library of meter templates provided RS232/RS485 mode selectable via bit switch Modbus Baud Rates: 9k6, 19k2, 38k4, 57k6 M-Bus and Modbus interface is galvanically isolated EN50022 DIN-rail mounting Model Type Model Description MOD-MBUS-2 MOD-MBUS-8 MOD-MBUS-24 MOD-MBUS-48 MBUS-CF Modbus to M-Bus, Up to 2 M-Bus, RS485/RS232 Modbus Slave Modbus to M-Bus, Up to 8 M-Bus, RS232/RS232 Modbus Slave Modbus to M-Bus, Up to 24 M-Bus, RS485/RS232 Modbus Slave Modbus to M-Bus, Up to 48 M-Bus, RS232/RS232 Modbus Slave Configuration Software for the Technical Data Power Supply 24Vdc+/-10% <2.5W MOD-MBUS-48: 24Vdc+/-10%<3.5W Modbus Modbus RTU Slave 9600 to bps, 8 Data Bits, Parity None/Even/Odd, 1 Stop Bit Modbus Connection RS232 or RS485 (Selectable by bit switch) Modbus Data Types 5 Different Data Types for the Value Representation No. of M-Bus Devices MOD-MBUS-2: Up to 2 M-Bus / Devices (1.5mA load) MOD-MBUS-8: Up to 8 M-Bus / Devices (1.5mA load) MOD-MBUS-24: Up to 24 M-Bus / Devices (1.5mA load) MOD-MBUS-48: Up to 48 M-Bus / Devices (1.5mA load) M-Bus Comms EN1434-3, 300 up to 38,400 bps, 8 Data Bits, Parity Even, 1 Stop Bit M-Bus Cable Max.Cable Length: 350m Max Cable Capacitance: 180 nf Maximum Number of Modbus Parameters Wiring Terminals Max. 1.5 mm 2 MOD-MBUS-2: Up to 20 Data Points MOD-MBUS-8: Up to 200 Data Points MOD-MBUS-24: Up to 500 Data Points MOD-MBUS-48: Up to 600 Data Points PS SW4.05-1/5

2 DIP Switch Settings Factory Settings Modbus Address: 255 Modbus Baud Rate: 9600 Modbus Interface: RS232 M-Bus Baud rate: 2400 Mounting EN50022 DIN-rail Operating Temp C Operating Humidity % rh non-condensing Storage Temp C Enclosure IP20 - UL 94 V0 Grey RAL7035 Dimensions W17.5 x H90 x D58 mm Weight 0.06kg The below diagrams illustrate the DIP switch settings MODBUS/M-Bus conversion modules.. 4: Function Definition 3: Interface: RS232/RS485 2: Baud Rate 2 1: Baud Rate 1 BAUD RATE : BIT SWITCH 1 & 2 INTERFACE : BIT SWITCH RS232 RS FUNCTI : BIT SWITCH 4 USE MODBUS SLAVE ADDRESS SET IN FLASH MEMORY BY S/W SET SLAVE ADDRESS TO 255 DIP SWITCH Baud Rate Bit Switches DESCRIPTI Use Bit Switches 1 and 2 to Select the Baud Rate. : 9600 Baud : Baud : Baud : Baud Interface Bit Switch IF Function Definition FD Note: The Modbus parity is set via the configuration software (None, Even or Odd) Select the serial interface mode for the Modbus RTUS = RS232 = RS485 Selects if the unit uses the Modbus address set by the configuration software or uses a fixed Modbus address (for test purposes) = Uses Modbus Address set by the Software = Modbus Slave Address Fixed to 255 Note: After changing the DIP switches the converter reboots immediately, so no power off or on is necessary. After reboot all the LEDs are on for half a second to signal the power on sequence. PS SW4.05-2/5

3 Wiring and LEDs The below diagrams illustrate the wiring of the Modbus to M-bus converters. TERMINALS L+ M- A B RX TX M- MB+ MB- DESCRIPTI Power Supply L+: 24Vdc M-: Ground RS485 Modbus RTU Slave Terminals A: Data+ B: Data - RS232 Modbus RTU Slave Terminals RX: Serial Receive TX: Serial Transmit M-: Ground for RS232 Interface to M-Bus devices LEDs STATE MBUS HOST DESCRIPTI State LED; flashes when the converter is OK M-bus Activity LED; flashes when M-bus telegrams are on the bus Host LED flashes when host sends/receives Modbus RTU telegrams Typical Network Diagram MOD-M-BUS converters are typically used as the communication interface to M-bus meters. M-bus is the European EN standard for communicating intelligent meters. Remote User Interface using Web-Browser, Animated Graphics (HTML5) ETHERNET COMMS HTTP, BACnet, SOX, Modbus TCP Ethernet / Internet / Intranet SDC-32G 32-Point Cloud Ready HTML5 Programmable Controller MOD/M-BUS-2/8/24/48 Modbus RTU RS485 MOD/M-BUS MOD/M-BUS-2/8/24/48 Energy Energy Water Electricity M-Bus Water Electricity M-Bus Heat Heat PS SW4.05-3/5

4 Functional Description and Modbus Registers MOD-MBUS converters read values of meters with a MBUS interface automatically and store the values in internal Modbus Holding registers. The converters can hold up to 20/200/500/600 MBUS values, depending on the type of the converter. A host system can read out asynchronously the stored values via MODBUS RTU master functionality. The physical connection is done via RS232 or via RS485 interface. After switching on the power supply the converter checks for a valid configuration and initializes all registers to zero. If there is no valid configuration or an error occurred, the state indicator flashes twice every second, on successful startup it flashes every second. The power on sequence is signaled with a simultaneous short flash of all the LEDs in the converter. For communication via Modbus are following Modbus features available: READ HOLDING REGISTER (function code: 3) PRESET SINGLE REGISTER (function code: 6) PRESET MULTIPLE REGISTERS (function code: 16) Register overview: value range counter information range configuration range *) command range reserved range *) counter 1... counter n reboot reserved *) reserved *) state identification number identification number MOD-MBUS2/8 MOD-MBUS24/48 value range 4x x x x01000 counter information range 4x x x x02072 configuration range 4x x x x04124 command range 4x x x x06003 reserved range 4x x x x x x x x65535 unused range reserved range *) *) This ranges are reserved for the configuration software and may not be written during operation. Note: A maximum of 100 registers per telegram is allowed for the telegrams READ HOLDING REGISTER and PRESET MULTIPLE REGISTERS. Modbus Data Formats and Value Ranges Following all data formats a value can be represented on the MODBUS side of the converter. Data Type 16-Bit Signed 32-Bit Signed 32-Bit IEEE Floating-Point Number 32-Bit IEEE Floating-Point Number Inverted Description This data format is qualified for the representation of small integer values with sign. Value range: Representation: 2 s complement This data format is qualified for the representation of big integer values with sign. Value range: Representation: 2 s complement Used for representation of very big integer and real numbers. Value range: 1,175495e-38 3, e+38 Representation: IEEE floating-point 32 bit Note: This data type has a limited accuracy. By using, there may be minor deviation of the reading values via MODBUS/RTU and the values which will be shown at the meter. This variations are system-related. Used for representation of very big integer and real numbers. Value range: 1,175495e-38 to 3, e+38 Representation: IEEE floating-point 32 bit Note: This data type has a limited accuracy. By using, there may be minor deviation of the reading values via MODBUS/RTU and the values which will be shown at the meter. This variations are system-related. PS SW4.05-4/5

5 M-Bus Interface Support Function Support communication according EN primary addressing secondary addressing FCB mechanism initializing of a meter (SND_NKE) sending data to the meter (SND_UD) NO reading of class 2 data (REQ_UD2) reading of class 1 data (REQ_UD1) receive of meter data (RSP_UD) multiple telegram answer fixed data structure variable data structure integer data type real data type BCD data format variable data format, PARTLY primary VIFs (VIF = Value Information Field) plain text VIF linear VIF extension manufacturer specific VIFs, PARTLY manufacturer specific values, PARTLY baud rate 300 to Dimensions Notes: In the view of a constant development of their products, the manufacturer reserves the right for changing technical data and features without prior notice. PS SW4.05-5/5