DIN-125 Modbus 4-20mA Current Input Module


The DIN-125 current input modules contain an isolated 15-bit analog to digital converter and measures 4-20mA current loop signals. Each module is hardware optimized for the best measurement performance over the current input range.

The DIN-125 performs all signal conditioning, the analog to digital conversion and produces a linearized data output. The data values are scaled in 16-bit unsigned integer format that represents a percentage of the full scale input range. The data values are transmitted to a host computer using the Modbus RTU serial protocol via an RS-485 serial port.

Download Datasheet

Download Manual

Download Modbus Register Map

Modbus Scaling Overview

The DIN-125 module easily mounts on industry standard 35mm DIN-rail.

Available on backorder

Additional Information


• Regulated +5Vdc, 0.75W max.
• Protected against power supply reversals


• Range: 4-20mA.
• Accuracy: +/- 0.04% of FS (4-20mA).
• Resolution: 0.04% of F.S.
• Common mode rejection: 100db at 50/60 Hz.
• Zero drift: +/-1 count max (autozero).
• Span tempco: +/-50ppm/deg C max.
• Voltage drop: +/-0.1V max.


The DIN-125 series remote I/O modules are compatible with all commercial software programs and OPC servers that support the Modbus RTU protocol. Commercials software programs from DreamReport, Wonderware, National Instruments Labview, Indusoft, DAQFactory and DASYLab all support the Modbus RTU protocol. OPC Servers from Kepware and MatrikonOPC support the Modbus RTU protocol.



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