DIN rail I/O Modbus slave with 8 outputs – 10A relay on socket

  • I/O interfacce – remotable on RS485 fieldbus
  • 8 digital outputs with relay on socket
  • High current relay: 10A/250Vac – 10A/30Vdc
  • 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
  • Plastic support with DIN rail mounting
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CODE: 099-8151 Category: Modbus compact I/O modules


I/O interface with relay digital outputs controlled via Modbus RTU over RS485 bus at high speed (up to 1Mb/s).
The outputs are equipped with power relay installed on socket for quick and easy replacement. Each relay has a status indicator LED and connection terminals for the changeover contact.
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.
Realisation on open board with support for DIN rail mounting.

Technical Specification

Relay outputs 8
Max current (cosɸ = 1) 10A @ 250Vac, 10A @ 30Vdc
Max current (cosɸ = 0.4) 7.5A @ 250Vac, 5A @ 30Vdc
Max voltage 380Vac, 125Vdc
Max switching (cosɸ = 1) 2500VA @ 250Vac, 300W @ 30Vdc
Max switching (cosɸ = 0.4) 1875VA @ 250Vac, 150W @ 30Vdc
Min load 100mA @ 5Vdc, 1mA @ 5Vdc
Resistance 30mΩ max
Activation time 15ms max
Release time 20ms max
Mechanical life 20 x 106 min
Electrical life 105 min
Dielectric strength 5000Vac (coil / contact)
Fieldbus RS485 (fully compliant to TIA/EIA-485A)
Max nodes / Termination 64 / insertable 120Ω load
Protection Thermal / ESD 15kV
Baudrate 300b/s ÷ 1Mb/s (continuosly prog.)
Protocol Modbus RTU, address 1 ÷ 247, parity None/Odd/Even
Function codes 1, 3, 5, 6, 15, 16, 17, 23, 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% / 210mA max
Operative temp. -20°C to 70°C
Connections Screw terminals for 28÷12AWG / 2.5mm2 cables
Support ABS with 35mm DIN rail mount
Max dimensions 90 x 125 x 66 mm (H x W x D)


SX08R brochure
Modules configuration manual
Modbus-Tool for configuration and test