Digital input module

EthernetModbus TCPModbus RTU

Overview
IO modules for building automation, industrial automation and infrastructure. Available in 4 MU, 8 MU or 12 MU sizes (depending on total built-in IOs); designed to fit the 45 mm cutout of standard switchboard cabinets.

Versions & Interfaces

• RS485 interface with MODBUS/RTU Slave protocol
• Ethernet interface with MODBUS/TCP protocol

Supported protocols and control

• MODBUS/RTU (via RS485)
• MODBUS/TCP (Ethernet versions support MODBUS/TCP Server)
• MODBUS/RTU via Ethernet (for Ethernet versions)
• Simple ASCII command protocol (for integration with media control systems or IoT platforms such as Node-RED, Node.js or Python)

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.

Product group & input types
This product group contains IO modules with digital inputs. Two digital input types are available:

• DC digital inputs up to 48 Vdc
• AC/DC digital inputs from 12–250 Vac/dc

Available IO counts / example configurations

• 6xDI
• 12xDI
• 24xDI
• 32xDI
• 64xDI
• 128xDI
• 152xDI
• 14xRI (12–250 Vac/dc)
• 48xRI (12–250 Vac/dc)

Notes
All modules include a wide-range power supply: 12–48 Vdc.

Technical specifications

• Commercial name: IOs-only digital INPUTs 4,8,12MU
• Form factors / sizes: 4 MU, 8 MU or 12 MU; fits 45 mm standard switchboard cutout
• Power supply: wide-range 12–48 Vdc
• Interfaces: RS485 (MODBUS/RTU Slave), Ethernet (MODBUS/TCP Server); Ethernet versions additionally support MODBUS/RTU via Ethernet
• Supported protocols: MODBUS/RTU, MODBUS/TCP, ASCII command protocol
• Digital input types: DC inputs up to 48 Vdc; AC/DC inputs 12–250 Vac/dc
• Selectable IO counts: 6xDI, 12xDI, 24xDI, 32xDI, 64xDI, 128xDI, 152xDI, 14xRI (12–250 Vac/dc), 48xRI (12–250 Vac/dc)
• Configuration tool: RESIConfigurator (software provided by manufacturer)
• Product reference shown on page: RESI-6DI-SIO
• Price (tax excl.): 143.90 EUR (per piece)
• Typical use cases: building automation, industrial automation, infrastructure, media control and IoT integration