Implementing 3-Switch XOR Ladder Logic with Internal Bit
Implement a 3-SPST switch XOR light circuit in LogixPro or RSLogix 500 using an internal relay bit. Includes truth tables, boolean equations, and verified.
Engineered for localized machine control, the CPM1A-40CDT-A-V1 programmable logic controller CPU unit serves as an efficient core module for small-scale automation processes. Designed by Omron, this compact controller integrates a highly functional processing engine with built-in digital inputs and outputs, eliminating the need for extensive initial hardware setups. This specific micro-PLC configuration features 40 built-in I/O points alongside a wide-range AC power supply, making it ideal for standalone machinery, basic conveyor control, and dedicated localized automation loops.
The unit features a responsive logic execution architecture, processing basic instructions quickly to ensure precise control timing. For applications demanding scalability, the CPM1A-40CDT-A-V1 supports the direct connection of up to three expansion units, allowing system integrators to scale up physical I/O points as operational requirements change. Its localized footprint and integration of dedicated high-speed inputs and outputs support highly dynamic control sequences without requiring external co-processors.
| Parameter | Value |
|---|---|
| Manufacturer | Omron |
| Model/Part Number | CPM1A-40CDT-A-V1 |
| Product Series | CPM1A |
| Power Supply Voltage | 85 to 264 VAC |
| On-Board Input Points | 24 points (24 VDC) |
| On-Board Output Points | 16 points (Transistor, sink type) |
| Program Capacity | 2 kWords |
| Data Memory Capacity | 1 kWord |
| Logic Execution Time | 0.72 us to 1.72 us |
| Built-in Encoder Input | 1 channel (5 kHz maximum frequency) |
| Built-in Pulse Output | 1 channel (2 kHz maximum frequency) |
| Maximum Expansions | Up to 3 expansion units |
| Dimensions (H x W x D) | 90 mm x 150 mm x 70 mm |
| Shipping Weight | 3.1 kg |
To ensure secure operation and optimal thermal performance, please observe the following physical installation criteria:
Global Express Shipping
Returns & Warranty

Engineered for localized machine control, the CPM1A-40CDT-A-V1 programmable logic controller CPU unit serves as an efficient core module for small-scale automation processes. Designed by Omron, this compact controller integrates a highly functional processing engine with built-in digital inputs and outputs, eliminating the need for extensive initial hardware setups. This specific micro-PLC configuration features 40 built-in I/O points alongside a wide-range AC power supply, making it ideal for standalone machinery, basic conveyor control, and dedicated localized automation loops.
The unit features a responsive logic execution architecture, processing basic instructions quickly to ensure precise control timing. For applications demanding scalability, the CPM1A-40CDT-A-V1 supports the direct connection of up to three expansion units, allowing system integrators to scale up physical I/O points as operational requirements change. Its localized footprint and integration of dedicated high-speed inputs and outputs support highly dynamic control sequences without requiring external co-processors.
| Parameter | Value |
|---|---|
| Manufacturer | Omron |
| Model/Part Number | CPM1A-40CDT-A-V1 |
| Product Series | CPM1A |
| Power Supply Voltage | 85 to 264 VAC |
| On-Board Input Points | 24 points (24 VDC) |
| On-Board Output Points | 16 points (Transistor, sink type) |
| Program Capacity | 2 kWords |
| Data Memory Capacity | 1 kWord |
| Logic Execution Time | 0.72 us to 1.72 us |
| Built-in Encoder Input | 1 channel (5 kHz maximum frequency) |
| Built-in Pulse Output | 1 channel (2 kHz maximum frequency) |
| Maximum Expansions | Up to 3 expansion units |
| Dimensions (H x W x D) | 90 mm x 150 mm x 70 mm |
| Shipping Weight | 3.1 kg |
To ensure secure operation and optimal thermal performance, please observe the following physical installation criteria:
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Japan
|