Digital input module romod 16DI eco

RS-485Modbus RTU16 digital inputs

Product information
The romod 16DI eco is a DIN-rail digital input module for up to 16 discrete signals. It accepts 24 V inputs switched by external dry contacts; the input reference can be set via the COM terminals to 0 V or 24 V. Inputs are configurable per channel (open-circuit or closed-circuit) via Modbus registers. The module provides status LEDs and a change-register that indicates which DI(s) changed since last read. Inputs can be used as counters for DC signals (counter values are not retained after power loss).

Technical data (key items)
Power supply: 24 V AC/DC via terminals
Current consumption: max. 150 mA (DC) / 220 mA (AC) with all DIs loaded
Power dissipation: max. 3.6 W (DC) / 5.3 W (AC) with all DIs loaded
Counting pulse duration: min. 10 ms (DC signals only)
Max. counter value: 4,294,967,296 (not retained after power failure)
Bus interface: RS485, Modbus RTU
Supported baud rates (autobauding): 9,600; 19,200; 38,400; 57,600 Baud
Serial parameters: 8-N-1
Memory/configuration: internal uPC, settings stored in internal EEPROM (up to 100,000 write cycles)
Operating temperature: 0...50°C; Transport/storage: 0...70°C; Relative humidity: 10...90% non-condensing
Protection class: IP 20

Caractéristiques / spécifications techniques

• Model: romod 16DI eco
• Function: digital input module, up to 16 digital inputs
• Input type: 24 V switched by external dry contacts
• Reference potential: selectable via COM terminals (0 V or 24 V); two COM terminals internally connected but not tied to power supply GND
• Input mode: open-circuit or closed-circuit selectable per input via Modbus registers
• Counter function: inputs usable as counters (DC only); counter values not retained after power loss
• Prescaler: adjustable per input (affects counting; changes retroactively amend counter values)
• Minimum pulse width for counting: 10 ms
• Change register: indicates which DI changed since last read; bits reset on read
• Power supply: 24 V AC/DC (terminals)
• Current consumption: max. 150 mA (DC) / 220 mA (AC) with all DIs loaded
• Power dissipation: max. 3.6 W (DC) / 5.3 W (AC) with all DIs loaded
• Max. counter value: 4,294,967,296
• Bus interface: RS485 (Modbus RTU)
• Supported baud rates: 9,600 / 19,200 / 38,400 / 57,600 Baud (autobauding)
• Serial parameters: 8-N-1
• Memory/configuration: internal uPC, settings in internal EEPROM (up to 100,000 write cycles)
• Bus cycle time: depends on baud rate and number of addressed data points
• Operating temperature: 0...50°C
• Transport/storage temperature: 0...70°C
• Relative humidity: 10...90% non-condensing
• Protection class: IP 20
• Weight: 0.125 kg