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MR-DIO4/2-IP65 Modbus RTU

The Modbus module in an IP65 housing with 4 digital inputs and 2 relay outputs 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 by means of two address switches.

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 changeover contacts (DPDT)
Output / switching voltage 250 V AC
Output / continuous current (UL) 8 A / output
Output / continuous current (VDE) 10 A / output
Output / switch-on current 80 A (less than 20 ms)
Display Green, red and yellow LED
Dimensions (W x H x D) 160 x 40 x 120 mm
Weight 350 g
Operating temperature range -5 °C to +55 °C
Storage temperature range -20 °C to +70 °C
Ingress protection for housing / terminal blocks IP65 / IP20

Technical Data 

  • P/N1108331326IP
    Feature 14x IN (U or contact)
    Feature 22x OUT (relay CO)


pdf Data sheet 1108331326IP 1.69 MB
pdf Instruction 1108331326IP 1 MB
pdf Modbus software manual 887.81 KB
zip Modbus Configuration Tool V1.20 752.7 KB
last update on Tuesday, 11. July 2017 - 6:54