SfAR-1M-4DO User Manual
www.ismacontrolli.com
DMP270en | 3rd Issue rev. 1 | 05/2022
page 5 of 16
3 Module Features
3.1 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.
3.2 Technical Specification
Power Supply
Voltage
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
Digital Outputs
No. of outputs
4
Max. voltage
55 V
Max .current
250 mA
Output type
PNP
Isolation
1500 Vrms
Temperature
Work
-20°C to +65°C
Storage
-40°C to +85°C
Connectors
Power supply
3 pin
Communication
3 pin
Outputs
2 x 3 pin
Configuration
mini USB
Size
Height
90 mm
Length
56.4 mm
