GW-7828 CR, Modbus RTU Slave to M-Bus Master Gateway
GW-7828 CR
Modbus RTU Slave to M-Bus Master Gateway
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Features
- Supports M-Bus standard: EN-13757, CJ/T -188
- Supports Modbus RTU function code 0x03 and 0x04 to read Meter data
- Supports up to 100 M-Bus slaves
- M-Bus over current protection
- Short-circuit protection on the M-Bus
- Update firmware from serial port
Introduction
The M-Bus ("Meter-Bus") is a standard for remote reading of meters. It is usable for most types of consumption meters as well as for various sensors and actuators. The GW-7828 is specially designed for M-Bus slave device. It offers Modbus RTU communication by three kinds of interface, RS-232, RS-422 and RS-485. On hardware the GW-7828 has two rotary switches for serial port and M-Bus port baud rate. GW-7828 supports Modbus RTU function code 0x03 and 0x04 to read data of M-Bus meters. Through this design, it is easy to communicate with any standard M-Bus slave.
Specifications
COM Ports
Ports: 1 x RS-232
1 x RS-422 (can't be used simultaneously)
1 x RS-485
Baud Rate: 300 bps ~ 115200 bps
Parity: None, Even, Odd, Space, Mark
Data Bit: 5, 6, 7, 8
Stop Bit: 1,2
M-Bus
Baud Rate: 300 bps ~ 2400 bps
Data Bit: 5, 6, 7, 8
Stop Bit: 1,2
Parity: None, Even, Odd, Space, Mark
Isolation: 3750 Vrms for photo-couple
Current Protection: short-circuit protection
Power
Consumption: 1.8 W @ 24 VDC (with 1 slave device)
11.8 W @ 24 VDC (with 100 slave devices)
Mechanical
Dimensions (mm): 72 x 122 x 33 (W x L x D)
Installation: DIN-Rail
Environment
Operating Temperature: -25 ~ +60°C
Storage Temperature: -40 ~ +80°C
Humidity: 10 ~ 90% RH, Non-condensing