SDM-8I8O
User Manual
1. Safety rules
•
Before first use, refer to this manual
•
Before first use, make sure that all cables are connected properly
•
Please ensure proper working conditions, according to the device specifications
(eg: supply voltage, temperature, maximum power consumption)
•
Before making any modifications to wiring connections, turn off the power supply
2. Module Features
2.1. Purpose and description of the module
The SDM-8I8O module is an innovative device that provides a simple and cost-
effective extension of the number of lines of input and output in popular PLCs.
The module has 8 digital inputs with configurable timer/counter option and 8
digital outputs. In addition, terminals IN1 and IN2 and IN3 and IN4 can be used to
connect two encoders. All inputs and outputs are isolated from the logic of using
optocouplers. Each channel can be individually configured in one of several modes.
This module is connected to the RS485 bus with 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 used to indicate the status of inputs
and outputs useful for diagnostic purposes and helping to find errors.
Module configuration is done via USB by using a dedicated computer program.
You can also change the parameters using the MODBUS protocol.
Expansion Module – 8 digital inputs, 8 digital outputs
User Manual
Version 1.3
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