DIN rail I/O Modbus slave with 16 inputs + 8 outputs 24V 2A PNP

  • I/O interfacce – remotable on RS485 fieldbus
  • 16 digital inputs, 24V PNP optoisolated
  • 8 digital outputs, 24V / 2A PNP optoisolated
  • RS485 serial port with high speed (1Mb/s max)
  • Modbus RTU protocol, configurable over RS485
  • Security timer for comunication supervisory
  • CoDeSys libraries for configuration and use
  • PC tool for configuring and testing modules
  • Compact dimension on 17.5mm of DIN rail
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CODE: 099-8100 Category: Modbus compact I/O modules


I/O Interface module with digital inputs and outputs controlled via Modbus RTU over RS485 bus at high speed (up to 1Mb/s).
Galvanic isolation on the input port and the output port. The static outputs, designed with high current MOSFET, are protected against permanent short-circuit, over-voltage and over-temperature.
Particularly suited for use with compact line Web PLCs through a configuration file and CoDeSys library for direct integration in the “PLC Configuration” of the programming tool.
Ultra compact (only 17.5mm wide) realization with DIN rail mounting. In combination with the compact PLC WP240 allows systems with more than one I/O per millimeter of DIN rail.

Technical Specification

Digital inputs 16
Voltage / Polarity 24Vdc / PNP
Impedance / Vmin 6.6kΩ / 10V
Isolation / Vmax Optocoupled / 2000Vac
Filtering 0 ÷ 100ms (10ms step prog.)
Digital outputs 8
Voltage / Polarity 24Vdc / PNP
Max current 2A for channel (8A total)
Power supply 20 ÷ 30Vdc
Isolation / Vmax Optocoupled / 2000Vca
Protection Short / Over-voltage / Thermal
Fieldbus RS485 (fully compliant to TIA/EIA-485A)
Max nodes / Termin. 64 / insertable 120Ω load
Protection Thermal / ESD 15kV / EMI common mode filter (2.2kΩ @ 100Mhz)
Baudrate 300b/s ÷ 1Mb/s (continuosly prog.)
Protocol Modbus RTU, address 1 ÷ 247, parity None/Odd/Even
Function codes 1, 2, 3, 4, 5, 6, 15, 16, 17, 23, 100, 101, 102, 109, 110
Security timer 0 ÷ 600” (10ms step prog.)
Max performance Complete I/O update within 250μs (measured at 1Mb/s with OVERDIGIT master)
Power supply 24Vdc ±15% / 50mA max
Connections Plug-in connectors with screw terminals for 28÷12AWG / 2.5mm2 cables
Operative temp. -20°C to 70°C
Box ABS with 35mm DIN rail mount / IP20
Max dimensions 113 x 17.5 x 119 mm (H x W x D)


EX1608DD brochure
Local functions manual
Modules configuration manual
Modbus-Tool for configuration and test