Omron CJ1W-CPU22 — CJ CPU, 10K Steps, Built-in I/O
SKU: CJ1W-CPU22USD 150.00
CJ-series built-in I/O CPU unit, 10K-step program, 32K data words, 320 I/O, 0.1 us LD, 10 in / 6 out.
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Product Overview
The Omron CJ1W-CPU22 (commonly listed by its CPU module code, CJ1M-CPU22) is a CJ-series CPU unit with ten built-in DC inputs and six built-in transistor outputs on the CPU slice itself. It runs a 10K-step program, holds 32K words of data memory, and executes a basic LD instruction in 0.1 microseconds. Up to ten CJ1W I/O modules can sit on the same rack for a maximum of 320 I/O points, with no expansion rack behind the CPU. The CPU drops onto any CJ-series power supply, such as the CJ1W-PA202 (14 W AC) or CJ1W-PD025 (DC), and is programmed with CX-Programmer. It is the standard pick for small packaging, material-handling, and filling machines where a handful of fast local inputs and outputs are needed without a separate I/O module.
Where the built-in I/O helps
A regular CJ1M-CPU11 has no I/O on the CPU; every signal lands on a CJ1W-ID / CJ1W-OD slice to its right. The CJ1W-CPU22 / CJ1M-CPU22 puts ten 24 VDC inputs and six sinking transistor outputs on the CPU itself, so a 20-point machine can run without buying a discrete input module. For anything past the built-in 16 points, add a CJ1W-ID211 (16-point input) or CJ1W-OD212 (16-point output) and the CPU treats it as just more I/O.
Choosing the right CJ CPU
The CJ1W-CPU22 sits at the middle of the CJ1M line. The smaller CJ1M-CPU11 / CPU12 cover 5K steps with no built-in I/O. The CJ1M-CPU13 / CPU23 step up to 20K steps and add a second serial port. For larger machines, the CJ2M-CPU33 (20K steps, EtherNet/IP) or CJ2M-CPU35 (60K steps) are the next move. Pick the CJ1W-CPU22 when the program fits in 10K steps and you want 10 inputs and 6 outputs on the CPU itself.
Before ordering
Confirm the cabinet supply: choose the CJ1W-PA202 for 100-240 VAC or CJ1W-PD025 for 24 VDC. Plan the rack space for up to ten CJ1W modules to the right of the CPU, and remember that the CJ1W-CPU22 does not support expansion racks. If the application needs remote I/O over EtherNet/IP, pick a CJ2M-CPU33 or higher instead.
Key Features
- CJ-series built-in I/O CPU, 10K-step program capacity
- 10 DC inputs and 6 transistor outputs on the CPU slice
- 0.1 microsecond LD execution, 32K-word data memory
- Up to 320 I/O points across ten CJ1W rack modules
- Single CJ rack, no expansion rack behind the CPU
- Compatible with CJ1W-PA202 / CJ1W-PD025 power supply
- Programmed with CX-Programmer on USB or RS-232C
- SKU: CJ1W-CPU22
- Series: CJ-series built-in I/O CPU
- I/O: 10 I/O
Best-Fit Applications
- Small packaging machines that need a handful of fast local inputs and outputs
- Filling and capping lines where the CPU also drives solenoid valves directly
- Material-handling conveyors with sensors and motor starters on the same PLC
- Index tables that need ten inputs for home and limit sensors on the CPU
- Compact machine cells where the built-in 16 I/O points save a separate slice
Buying Checklist
- Choose CJ1W-CPU22 (CJ1M-CPU22) for 10K steps and built-in 10 in / 6 out.
- Choose CJ1M-CPU11 for the same 5K-step base CPU without built-in I/O.
- Choose CJ2M-CPU33 when the application needs EtherNet/IP and 20K steps.
- Choose CJ1W-PA202 for 100-240 VAC supply or CJ1W-PD025 for 24 VDC supply.
- Confirm the program fits in 10K steps before locking in this CPU.
- Allow for up to 320 I/O points across ten CJ1W rack modules.
Technical Specifications
| Series | CJ-series built-in I/O CPU |
|---|---|
| Program Capacity | 10K steps |
| Data Memory | 32K words |
| LD Execution Time | 0.1 microseconds |
| Built-in Inputs | 10 DC inputs (24 VDC) |
| Built-in Outputs | 6 transistor outputs (sinking) |
| Maximum I/O | 320 points on the CPU rack |
| Rack Modules | Up to 10 CJ1W modules |
| Expansion Rack | Not supported |
| Programming Port | USB or RS-232C |
| Compatible PSU | CJ1W-PA202 (AC) or CJ1W-PD025 (DC) |
| Programming Software | CX-Programmer |
Resources & Downloads
FAQ for CJ1W-CPU22
What is the difference between CJ1W-CPU22 and CJ1M-CPU22?
The two names refer to the same CPU module. CJ1W is the rack-mount prefix used in some catalogue listings; the official Omron SKU is CJ1M-CPU22. Either way, the module drops onto any CJ-series rack and provides 10 built-in inputs, 6 built-in outputs, 10K-step program, and 32K data words.
Can the CJ1W-CPU22 sit on an expansion rack?
No. The CJ1M-CPU22 supports a single CPU rack with up to ten CJ1W I/O modules. For machines that need remote racks, move up to a CJ1M-CPU13 / CPU23 (with expansion) or a CJ2-series CPU. Up to three expansion racks are allowed on those higher CJ1M and CJ2 CPUs.
Which power supply pairs with the CJ1W-CPU22?
Either CJ1W-PA202 (14 W, 100-240 VAC) or CJ1W-PD025 (DC supply for 24 VDC cabinets) is the standard choice. The PA202 / PD025 sits to the left of the CPU and powers the whole rack. For larger racks that need 25 W, choose the CJ1W-PA205R with the RUN output contact.
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