Purpose and Description of the Module
The SfAR-1M-4DO module is an innovative device that provides a simple and cost-effective extension of the number of outputs in popular PLCs.
This module is connected to the RS485 bus with a twisted-pair wire. Communication is via Modbus RTU or Modbus ASCII. The use of 32-bit ARM core processor provides fast processing and quick communication. The baud rate is configurable from 2400 to 115200.
The module is designed for mounting on a DIN rail in accordance with DIN EN 5002.
The module is equipped with a set of LEDs to indicate the status of inputs and outputs which is useful for diagnostic purposes and helping to find errors.
Module configuration is done via USB by using a dedicated computer program. It also allows for changing the parameters using the Modbus protocol.
10-38 V DC; 10-28 V AC
Power consumption (with active Modbus transmission, all outputs on)
1 W at 24 V DC
2 VA at 24 V AC
No. of outputs
-20°C to +65°C
-40°C to +85°C
2 x 3 pin
Up to 128 devices
The appearance and dimensions of the module are shown below. The module is mounted directly to the rail in the DIN industry standard.