DIN rail I/O Modbus slave with 16 inputs 24V PNP

  • I/O interfacce – remotable on RS485 fieldbus
  • 16 digital inputs, 24V PNP optoisolated
  • RS485 serial port with high speed (1Mb/s max)
  • Modbus RTU protocol, configurable over RS485
  • 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: 099-8101 Category: Modbus compact I/O modules


EX1600DD is a reduced version of EX1608DD, with the same specifications, but with only digital inputs port. Suitable for systems with only inputs or to add additional inputs to the EX1608DD complete module.

Technical Specification

Digital inputs 16
Voltage / Polarity 24Vdc / PNP
Impedance / Vmin 6.6kΩ / 10V
Isolation / Vmax Optocoupled / 2000Vac
Filtering 0 ÷ 100ms (10ms step prog.)
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)


EX1600DD brochure
Local functions manual
Modules configuration manual
Modbus-Tool for configuration and test