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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. With strong inductive loads, we recommend protecting the relay contacts with an RC element. 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 range 20 V to 28 V AC/DC (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) 159 x 41.5 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 block 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 926.81 KB
pdf Modbus software manual 698.96 KB
pdf Produktuebersicht C|Logline 899905-05 EN 3.55 MB
zip Modbus Configuration Tool V1.20 746.87 KB
last update on Tuesday, 6. September 2016 - 4:30