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MR-AI8 Modbus RTU

The Modbus module with 8 individually configurable resistance or voltage inputs was developed for decentralized switching tasks. It is suitable for detecting resistances and voltages of, for example, passive and active temperature sensors, electrical vent and mixing valves, valve positions, etc. The inputs can be configured universally by means of standard registers via a Modbus master. Module address, bit rate and parity are set with two rotary switches on the front or by software.Suitable for decentralized mounting on DIN TH35 rail according to IEC 60715 in electrical distribution cabinets.

Protocol Modbus RTU
Address range 00 to 99
Bus interface RS485 (two-wire bus)
Transmission rate 1200 to 115200 bit/s
Operating voltage 24 V AC/DC ± 10% (SELV)
Current consumption 65 mA (AC) / 25 mA (DC)
Relative duty cycle 100 %
Inputs 8 x individually configurable
Input / resistance 40 Ohm to 4 MOhm
Input / voltage 0 V to 10 V DC
Input / resolution 10 mV (0 to 100 %)
Input / error approx. +/- 100 mV
Display Green and red LED
Dimensions (W x H x D) 50 x 69.3 x 60 mm
Weight 104 g
Operating temperature range -5 °C to +55 °C
Storage temperature range -20 °C to +70 °C
Ingress protection for housing / terminal blocks IP40 / IP20

Technical Data 

  • P/N11083213
    Feature 18x IN (U or R)


lock ePLAN Daten 11083213 743.67 KB
pdf Data sheet 11083213 3.24 MB
pdf Instruction 11083213 1.5 MB
pdf Modbus software manual 887.81 KB
lock 3D data - STEP / IGES
1.38 MB
zip Modbus Configuration Tool V1.20 752.7 KB
last update on Wednesday, 16. August 2017 - 4:04