PLC Based Automation Solutions and Communication System
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GW-7828
GW-7828
Modbus RTU Slave to M-Bus Master Gateway
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
- Application
- Specification
- Download
- Get A Quote
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.
| Type | Model | Description |
|---|---|---|
| Repeater | I-3591 | M-Bus Repeater |
| Converter | I-7590 | RS-232 / 422 / 485 to M-Bus Converter |
| Gateway | GW-7828 | Modbus RTU Slave → M-Bus Master Gateway |
| GW-7838-M | Modbus TCP Server → M-Bus Master Gateway |
Application
Specification
| COM Ports | |
|---|---|
| Ports |
1 × RS-232 1 × RS-422 (cannot be used simultaneously) 1 × RS-485 |
| Baud Rate | 300 bps ~ 115200 bps |
| Parity | None, Even, Odd, Space, Mark |
| Data Bits | 5, 6, 7, 8 |
| Stop Bits | 1, 2 |
| M-Bus | |
|---|---|
| Baud Rate | 300 bps ~ 2400 bps |
| Data Bits | 5, 6, 7, 8 |
| Stop Bits | 1, 2 |
| Parity | None, Even, Odd, Space, Mark |
| Isolation | 3750 Vrms (photocoupler) |
| Current Protection | Short-circuit protection |
| Power | |
|---|---|
| Power Consumption |
1.8 W @ 24 VDC (1 slave device) 11.8 W @ 24 VDC (100 slave devices) |
| Mechanical | |
|---|---|
| Dimensions (mm) | 72 × 122 × 33 mm (W × L × D) |
| Installation | DIN rail |
| Environment | |
|---|---|
| Operating Temperature | -25 ~ +60 °C |
| Storage Temperature | -40 ~ +80 °C |
| Humidity | 10% ~ 90% RH, non-condensing |
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