SDM-8AI
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
SDM-8AI module allows measurement of voltages and currents. Values are read via
RS485 (Modbus), so we can easily integrate the module with popular PLCs, HMI or PC
equipped with the appropriate adapter.
The device has a set of 8 analog input measurements. In addition, the module is
equipped with 2 configurable digital outputs.
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 analog inputs
User Manual
Version 1.2
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