Configured for high-density sequence processing and continuous loop algorithm execution in Omron CJ1 Control Architectures, the Omron CJ1G-CPU45P (CJ1G-CPU45P Loop-Control CPU Unit) provides direct physical/electrical execution.

Nomenclature & System Memory Allocation

The model designation CJ1G-CPU45P identifies a specialized dual-engine processor module in the Omron CJ1 series platform. The "CJ1G" standard establishes high-speed instruction processing, while the "P" suffix denotes built-in loop control capabilities for up to 300 function blocks. The "45" classification specifies an extended 60 Ksteps program memory footprint paired with 128 Kwords of system data memory (DM: 32 Kwords, EM: 32 Kwords x 3 banks), enabling dynamic I/O density scaling up to 1280 points.

Technical Performance Parameters

Deterministic Backplane Execution & Firmware Protocols

The processor coordinates real-time data frame transfers over the CJ-series backplane bus communication velocity framework, synchronizing local expansion rack I/O with continuous function block processing. Maintaining strict firmware flash compatibility with CX-Process and CX-Programmer tools, the unit routes loop feedback and deterministic EtherNet/IP communications without interrupting sequence execution cycles.

Package Component List

• 1 x Omron CJ1G-CPU45P Loop-Control CPU Unit
• 1 x Set of Protection Covers for Bus Terminals
• 1 x Printed Hardware Installation Guide

Cabinet Assembly & Grounding Protocol

• Rail Securement & Convection Gaps

  Attach the CPU module directly onto a standard 35 mm DIN rail inside an industrial panel enclosure. Install mechanical end brackets on both sides of the rack assembly to lock horizontal alignment. Retain a minimum vertical air gap of 50 mm above and below the module to allow unassisted thermal convection.

• Earthing Standards & Signal Isolation

  Connect the functional earth (FE) terminal on the adjacent power supply unit to a grounded cabinet busbar with less than 100 ohms loop resistance. Route high-density process analog wiring in isolated grounded conduits away from 230 VAC power feeders and variable frequency drives.

Hardware Technical Knowledgebase

• What is the electrical power draw of the CJ1G-CPU45P module from the 5 VDC rail?

  The CPU draws 0.95 A at 5 VDC directly from the system power supply module across the backplane bus.

• Is hot-swapping supported for this CPU module during active backplane operations?

  No, live insertion or extraction is strictly prohibited. Disconnect input power to the rack supply module prior to hardware servicing.

• What is the maximum local I/O expansion footprint handled by this unit?

  The processor directly addresses up to 1280 local discrete and analog points distributed across the primary rack and expansion racks.

• How are the internal data memory registers partitioned across the memory banks?

  Data memory consists of 128 Kwords total, organized as 32 Kwords of standard DM registers and 96 Kwords of EM registers across 3 separate banks.

• How many concurrent process control routines can be executed by the loop engine?

  The integrated coprocessor executes up to 300 function blocks for continuous analog loop regulation, cascade routines, and signal conditioning.

• How are user programs and retention data preserved during power outages?

  An internal replaceable lithium battery retains user program memory, real-time clock parameters, and non-volatile DM locations when power is removed.

• What ports are available for logic loading and system communication?

  Data transfer is established via the built-in peripheral port, optional serial option boards, or using the front CompactFlash card interface.

• What environmental operating limits must be maintained inside the enclosure?

  The unit operates within an ambient temperature span of 0 to 55 deg C and relative humidity levels between 10% and 90% non-condensing.