Configured for serial data transmission over RS-422A and RS-485 physical loops, the Omron NX-CIF105 (NX-CIF105 Communications Interface Units) provides direct physical and electrical execution across distributed industrial automation networks.

Suffix Nomenclature & Architecture Matrix

The model designation defines structural channel capacity, serial physical layers, and communication protocol handling within the Omron NX modular product line.

• NX: Modular control system series optimized for high-speed backplane bus communication.
• CIF: Dedicated communication interface module classification handling serial data transmission.
• 105: Single-port RS-422A/485 serial communication configuration supporting half-duplex and full-duplex wiring modes.

Hardware Specifications

Backplane Bus Communication Velocity & Firmware Compatibility

The module integrates directly with the central processing backplane via high-speed communication channels, supporting deterministic network topologies. Firmware flash compatibility ensures seamless system updates without interrupting active serial buffers. Furthermore, backplane bus communication velocity guarantees rapid data transfer to the controller CPU, while I/O density scaling allows efficient system expansion across multiple modular nodes without sacrificing transmission throughput.

Ordering Information

• 1 x Omron NX-CIF105 Communications Interface Unit
• 1 x Removable screwless terminal connector block
• 1 x Hardware safety and installation manual

Enclosure Mounting & Field Wiring Guidelines

• DIN Rail Mounting
  • Secure the unit onto a standard 35 mm DIN rail inside a protective metallic enclosure designed for industrial control environments.
• Serial Line Cabling
  • Route twisted-pair shielded cables for RS-422A/485 connections up to 1200 m max distance while maintaining proper termination resistors.
• Terminal Connection
  • Insert stripped conductor wires directly into the screwless clamping terminals without utilizing screw-tightening tools.
• Shield Grounding
  • Terminate cable shields to the cabinet functional earth busbar to prevent electromagnetic interference along long serial runs.

Technical Operation Frequently Asked Questions

• What serial communication standards are supported by the NX-CIF105 module?

  The unit supports RS-422A and RS-485 physical layer interfaces for multi-drop serial communication.

• What is the maximum allowable communication distance for serial loops?

  The hardware permits cable runs up to 1200 m maximum under standard industrial wiring practices.

• Which communication protocols can be executed on the port?

  The module operates using No-protocol mode for transparent ASCII or binary frame transmission.

• How does the unit handle half-duplex and full-duplex wiring?

  It supports half duplex for two-wire connections and full duplex for four-wire connection layouts.

• What is the selectable Process Data Object (PDO) size range?

  PDO data size can be configured from 4 up to 80 bytes for inputs or outputs in incremental steps.

• How are internal circuits isolated from external serial lines?

  Power supply isolation uses transformers and photocouplers, while signals use digital isolators.

• Does the interface unit support data backup functions?

  Yes, integrated functions to back up configuration and communication data are fully provided.

• What is the maximum power consumption when connected to a CPU unit?

  Power consumption reaches up to 1.65 W maximum when attached directly to a CPU unit.