Configured for high-speed input event processing in CJ Series I/O racks, the Omron CJ1W-INT01 (CJ1W-INT01 Interrupt Input Module) provides direct physical/electrical execution of high-priority task triggers within Omron CJ-series PLC systems.

Technical Identifier Matrix

• Base Part Number: CJ1W-INT01
• Brand: Omron
• Module Classification: Basic I/O Unit (Interrupt Input)
• Signal Configuration: 16 Digital Inputs (Interrupt Driven)
• Input Rating: 24 VDC, 7 mA per point

Hardware Specifications

Backplane Bus Velocity & Firmware Compatibility

The Omron CJ1W-INT01 interfaces with the internal CJ-series backplane bus to bypass standard cyclic I/O refresh cycles. Upon detecting a rising or falling edge transition on any of its 16 24 VDC input channels, the module directly interrupts the CPU execution sequence to execute associated interrupt task programs with minimal latency.

High-density channel mapping matches the internal I/O bus throughput without adding backplane scan overhead. The module firmware maintains hardware compatibility with all CJ1G, CJ1H, and CJ1M CPU processors, maintaining deterministic instruction jump latencies across high-density I/O configurations.

Package Contents & Ordering Information

• 1x Omron CJ1W-INT01 Interrupt Input Module
• 1x 18-Point Removable Terminal Block Assembly
• 1x Hardware Installation Sheet

Field Installation Guidelines

• Rack Installation: Position the CJ1W-INT01 on the CJ CPU Rack or Expansion Rack, sliding the module along the DIN rail guide until the upper and lower locking levers click into place.
• Field Wiring: Connect 24 VDC discrete field inputs to the removable terminal block. Ensure 24 VDC field power supplies are sized to deliver 7 mA per activated input point.
• Shielding: Wire high-speed input lines using shielded twisted-pair conductors to prevent transient electrical noise from generating false hardware interrupt triggers.
• Grounding: Connect the CPU Rack functional ground (FG) terminal directly to a protective earth rail using a conductor with a minimum cross-sectional area of 2.0 mm sq.

Frequently Asked Questions

• What is the primary function of the CJ1W-INT01 in a CJ PLC system?

  The CJ1W-INT01 accepts 24 VDC field signals and instantly triggers dedicated interrupt tasks in the CPU Unit, bypassing standard I/O scan cycles.

• What is the current draw of the CJ1W-INT01 from the backplane power supply?

  The module draws 0.08 A (80 mA) at 5 VDC from the internal CPU backplane bus power supply.

• What physical terminal interface is provided for field wiring?

  Field devices connect via a front-mounted, removable 18-point screw terminal block assembly.

• Can the CJ1W-INT01 be installed on an Expansion Rack?

  Yes, the module can be installed on both CPU Racks and Expansion Racks without slot position restrictions.

• Does the CJ1W-INT01 support hot-swapping under backplane power?

  No, power to the rack must be completely disconnected before removing or inserting the module to prevent equipment damage.

• What input voltage and current are required to trigger an input channel?

  Each of the 16 input points requires a 24 VDC signal drawing a nominal operating current of 7 mA per point.

• What cable shielding is recommended for high-speed interrupt input runs?

  Field input runs require shielded twisted-pair cabling with 360-deg braid grounding connected to the FE rail to mitigate signal interference.

• Is firmware configuration required to assign interrupt tasks to input points?

  Yes, individual input points are assigned to specific CPU interrupt task numbers within the PLC software system settings.