Analog I/O module

digitalRS-485Ethernet

Overview
RESI IO modules are engineered for building automation, industrial automation and infrastructure applications. Available in 4, 8 or 12 MU widths, they fit standard 45 mm switchboard cutouts and into common distribution cabinets. The product family covers mixed configurations of digital inputs, universal analog I/Os and relay outputs to address diverse I/O requirements.

Interfaces & Protocols
Two interface variants are offered:

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

All modules also provide a compact ASCII command protocol for integration with media control systems or IoT controllers (Node-RED, NodeJs, Python). Ethernet models additionally support MODBUS/RTU over TCP where required.

Configuration
Parameterize and test modules with the free RESIConfigurator software. Each unit is delivered with a complete ASCII command list and a MODBUS register table including detailed explanations for rapid commissioning.

IO types & functionality
This product group includes modules with:

• Universal analog inputs or outputs (configurable per channel)
• Digital inputs
• Relay outputs for AC or DC loads

Universal analog IO features
Selected modules provide per-channel configurable analog I/O where each channel can be set as:

• Analog input: 0/2–10 V or 0/4–20 mA
• Analog output: 0/2–10 V or 0/4–20 mA
• Resistor input (0–1 MΩ)
• RTD input: PT100, PT1000 or NI1000-DIN43760
• Digital input (dry contact or 24 Vdc)

Digital inputs and relays
Digital inputs accept DC signals up to 48 Vdc. Relay outputs are Form A (normally open) with AgSnO2 contacts, rated up to 6 A maximum. Supported switching voltages depend on configuration: up to 30 Vdc or up to 250 Vac for AC circuits.

Options / Variants

• Interface: RS485 (ASCII + MODBUS/RTU Slave) or Ethernet (ASCII + MODBUS/TCP Server)
• Analog IO variants: 4xAIOX / 8xAIOX / 16xAIOX (universal analog I/O per channel: 0/2–10 V, 0/4–20 mA, RTD, DI)
• Digital & relay combinations: examples include 32xDI (≤48 Vdc) + 12xrelays (≤30 Vdc, ≤250 Vac, ≤6 A); other combinations with different relay counts and DOs available

Delivered documentation
Each product shipment includes an ASCII command list, a MODBUS register table and catalog/product attachment documents (catalog pages, manuals and certificates) to support integration and certification requirements.

Technical specifications

• Product family: RESI IO modules
• Typical widths: 4 MU, 8 MU or 12 MU
• Panel cutout: fits 45 mm switchboard cabinet cutout
• Interfaces: RS485 (MODBUS/RTU Slave) or Ethernet (MODBUS/TCP)
• Protocols: MODBUS/RTU, MODBUS/TCP, ASCII command protocol
• Power supply: wide range 12–48 Vdc
• Analog I/O per channel: configurable as 0/2–10 V, 0/4–20 mA, resistor (0–1 MΩ), RTD (PT100, PT1000, NI1000-DIN43760) or digital input (dry contact / 24 Vdc)
• Digital inputs: up to 48 Vdc
• Relay outputs: Form A (normally open), AgSnO2 contacts, up to 6 A max; supported voltages up to 30 Vdc or 250 Vac depending on configuration
• Example reference: RESI-32DI12RO4AIOX-SIO
• Typical price (excl. tax): 484.50 EUR
• Configuration & testing software: RESIConfigurator