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MR-DIO4/2S Modbus RTU

The Modbus module with 4 digital inputs and 2 relay outputs with manual control was developed for decentralized switching tasks. It is suitable for accommodating, for example, light switches and window contacts in a room, switching two light strips or controlling louvers. It can also be used to control 2 motorized fire dampers. In this case it is necessary to protect the relay contacts by appropriate load-dependent measures. The inputs can be used as contact or voltage inputs. The inputs and outputs can be switched and scanned 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 200 mA (AC) / 75 mA (DC)
Relative duty cycle 100 %
Inputs 4 x digital
Input / voltage 30 V DC
Input / high signal more than 8 V AC/DC
Output / contacts 2 NO contacts (DPST-NO)
Output / switching voltage 250 V AC
Output / continuous current 16 A / output
Output / switch-on current 160 A (less than 20 ms)
Display Green, red and yellow LED
Dimensions (W x H x D) 50 x 69.3 x 60 mm
Weight 126 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/N110833132601
    Feature 14x IN (U or contact)
    Feature 22x OUT (relay NO)


lock ePLAN Daten 110833132601 756.07 KB
pdf Data sheet 110833132601 3.14 MB
pdf Instruction 110833132601 1.52 MB
pdf Modbus software manual 887.81 KB
lock 3D data - STEP / IGES
1.38 MB
last update on Thursday, 22. February 2018 - 3:29