DIN-145 Modbus Thermistor Input Module


The DIN-145 Thermistor input modules contain an isolated 15-bit analog to digital converter and measure Thermistor temperature sensors. Each module is hardware optimized for the best measurement performance over the sensor input range. Two different thermistor input modules are available, 2252 Ohms and the Honeywell TD series.

The DIN-145 performs all signal conditioning, the analog to digital conversion and produces a linearized temperature output. The values are scaled in 16-bit unsigned integer format that represents a percentage of the full scale temperature range. The data values are transmitted to a host computer using the Modbus RTU serial protocol via an RS-485 serial port.

The DIN-145 module easily mounts on industry standard 35mm DIN-rail.

2252: -0 to +100 C
TD: -40 to 150 C

2252: +/-0.1 C
TD: +/-0.2 C


Download Datasheet

Download Manual

Download Modbus Register Map

Modbus Scaling Overview

Additional Information


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


• Thermistors: 2252 Ohm at 25 DegC, TD Series.
• Resolution: 0.01 degrees C.
• Common mode rejection: 100db at 50/60Hz.
• Input protection to 30Vdc.


The DIN-145 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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