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The bm5R is a RS485 module expansion. The main features are the following:

  • 5 Channels Power Relay Output module
  • The max current can up to 3A 230Vac
  • Surge Protected and isolated Rs 485

Technical Features

Basic specifications

Item Description
Output Channels number 5
Output Signal Relay Normal Open Contact
Ambient Temperature -20°C / 80°C
Ambient Humidity 10% to 90%
Communication Port RS485 Networked
Output Protection Lighting static

Module Dimensions

Size : 100*69*25 mm

Module description

Bm5R description.jpg

Output wiring

  • RLxNO: 1 through 5: Normal open output
  • RLxCOM: 1 through 5: Common

Power wiring

  • DC: 24V, positive
  • GND, negative
  • AC: 24V, hot line
  • GND, neutral line

RS485 wiring

  • DATA+: connect to A end of RS485
  • DATA-: connect to B end of RS485
  • RGND: connect to Earth if necessary

LEDs indication

Heart: Flashing when the system is working Comm: Flashing when serial port communication is working

Reset parameter to default Put the jumper at INIT ,the following parameters back to default.

  • Address of device: 254
  • Baudrate:19200 bps

Modbus registers:

Adress # Type Description
6 1 BIT Device Adress (default 254)
9 2 BIT Baud rate setting (default 19200 bps)
100 1 BIT Output: 0 = active,1 = inactive. Bit 0 corresponds to channel 1, bit 1 corresponds to channel 2 etc.
101 1 BIT Reply delay for serial communication: the units is ms and the default is 10ms



This documentation is licensed under the Creative Commons Attribution-ShareAlike License 3.0

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