Digital I/O module

Modbus TCPModbusEthernet

Overview
Modular digital I/O modules for building automation, industrial automation and infrastructure applications. Available in 4 MU, 8 MU or 12 MU formats to fit a 45 mm standard switchboard cutout; suitable for compact switchboard installations and scalable I/O deployments.

Interfaces & Protocols

• RS485 interface with MODBUS/RTU Slave protocol
• Ethernet interface with MODBUS/TCP Server protocol
• All modules support a simple ASCII protocol (for media control systems or IoT controllers using Node-RED, NodeJs or Python)
• Ethernet versions additionally support MODBUS/RTU via Ethernet

Power Supply
Wide-range DC power input: 12–48 Vdc. Designed for industrial power environments and DC distribution systems.

Digital Inputs & Outputs

• Digital inputs: for DC signals up to 48 Vdc
• Digital outputs: for DC signals up to 30 Vdc
• Independent output groups allow mixed output voltages on a single module (e.g. 12 Vdc and 24 Vdc)
• Output protection and diagnostics (depending on module type): thermal overload detection, short-circuit detection, open-wire detection, over-current detection; outputs shortcut protected

Available module configurations (examples from product options)

• 6xDI + 6xDO (≤30 Vdc, ≤700 mA)
• 12xDI + 12xDO (≤30 Vdc, ≤700 mA)
• 16xDI + 15xDO (≤30 Vdc, ≤350 mA)
• 16xDI + 15xDO (≤30 Vdc, ≤700 mA)
• 32xDI + 30xDO (≤30 Vdc, ≤350 mA)
• 32xDI + 30xDO (≤30 Vdc, ≤700 mA)
• 64xDI + 60xDO (≤30 Vdc, ≤350 mA)
• 64xDI + 60xDO (≤30 Vdc, ≤700 mA)
• 76xDI + 72xDO (≤30 Vdc, ≤700 mA)

How to configure
Use the RESIConfigurator (free software) to parameterize and test IO modules. Each product includes a complete ASCII command list and a MODBUS register table with detailed explanations for integration and commissioning.

Technical specifications

• Series name: IOs-digital INs+OUTs
• Form factors: 4 MU, 8 MU, 12 MU (fits 45 mm switchboard cutout)
• Power supply: 12 - 48 Vdc
• Interfaces: RS485 (MODBUS/RTU Slave), Ethernet (MODBUS/TCP Server); ASCII protocol supported
• DI rating: DC signals up to 48 Vdc
• DO rating: DC signals up to 30 Vdc
• Output current per channel: variants with up to 700 mA (with extended diagnostics) or 350 mA (RESI-Lxxx economical variants)
• Diagnostics (for 700 mA modules): thermal overload, short-circuit, open-wire, over-current; outputs shortcut protected
• Modular variants available from small (6 DI / 6 DO) to large (up to 76 DI / 72 DO)
• Reference example: RESI-6DI6DO-SIO