The Omron CS1G-CPU45H, also cataloged as the CS1G CPU Unit, operates as a dedicated hardware component for high-speed sequence processing and memory execution within CS1 Series PLC system backplanes. It processes basic logical instructions at 0.04 us speed while coordinating memory allocation across local racks and up to 7 expansion racks.

Model Variant Architecture

• CS1G: Standard high-speed CPU architecture within the CS1 controller family.
• CPU45H: High-capacity process execution engine featuring 60 Ksteps program memory and 128K words data memory.

Physical & Performance Specifications

Backplane Bus Performance & Firmware Coordination

The CS1G-CPU45H processor delivers high backplane bus communication velocity across local and expansion backplane tracks. Optimized system bus protocols facilitate dense I/O density scaling up to 5120 bits without sacrificing instruction execution loop time. Firmware flash compatibility ensures synchronized register swapping and continuous task execution across real-time Ethernet and serial communication option boards.

Standard Shipping Configuration

• 1 x Omron CS1G-CPU45H CPU Processor Unit
• 1 x Protective Interface Dust Cap Assembly
• 1 x Technical Installation Sheet

System Installation & Field Wiring Protocol

CPU Slot Attachment

• Slide the CPU module into the dedicated CPU slot of the CS1 backplane until the upper and lower locking levers click into position.
• Secure top retaining screws to ensure stable backplane grounding and connection integrity under vibration.

Serial Interface Connections

• Cable the built-in RS-232C port using shielded D-sub 9-pin connectors with ground drain wires terminated at the rack frame ground.
• Maintain a clearance of at least 50 mm around peripheral ports to prevent cable strain and signal noise coupling.

Frequently Asked Questions

• What is the basic instruction execution speed for the CS1G-CPU45H processor?

  The processor executes basic LD instructions at a high-speed rate of 0.04 us per instruction.

• How many total expansion racks can be controlled by this CPU unit?

  The CS1G-CPU45H supports direct bus connection to a maximum of 7 expansion racks.

• What memory capacities are provided for program and data storage?

  The module provides 60 Ksteps of program capacity and 128K words of data memory allocation.

• What communication interface ports are built directly into the front panel?

  The unit features one dedicated peripheral port and one RS-232C serial port for programming and device connectivity.

• Does the CPU module require external power supply wiring directly to its front terminals?

  No, the CPU draws its operating logic power of 5 VDC directly from the backplane rack power supply unit.

• Can the CPU unit be removed or inserted while backplane power is turned on?

  No, backplane power must be completely shut off before inserting or extracting the CPU unit from the rack base.

• How many maximum I/O bits can this CPU process across all connected racks?

  The system processes up to a maximum addressable capacity of 5120 I/O bits.

• How are RS-232C communication shield lines grounded on this hardware?

  Shielded serial cables must connect their braid shields directly to the connector shell, grounding through the metallic chassis frame.