RS485 Modbus RTU Digital I/O Expansion Module

Add digital connections to a compatible control system with this RS485 Modbus RTU I/O module. It is for builders expanding PLC and automation projects.

• ✅ Expand a controller — RS485 Modbus RTU connects the module to compatible automation equipment.
• ✅ Match the signal task — Input, output and combined versions serve different wiring requirements.
• ✅ Choose the input format — NPN and PNP input options are separate selections.
• ✅ Organise the installation — DIN-rail mounting suits a compatible control enclosure.

Choose the inputs and outputs your project needs

Choose the module by its required input and output arrangement before planning the wiring. A 16-input board does not provide the same connections as a combined 8-input and 8-output board.

Confirm the selected board's supply voltage, input polarity and output load rating before installation. Relay and transistor outputs must not be treated as interchangeable. Power supply and host controller are not confirmed as included.

Technical details

• Communication: RS485
• Protocol: Modbus RTU
• Options: 8 relay, 16I PNP, 16I NPN, 16O, 8I8O
• Mounting: DIN rail
• Package: One selected module

Match the component specification to the project before choosing the version.

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