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The CJ2M-CPU31 is a CPU unit from the Omron CJ2 series designed for panel mounting. This controller features EtherNet/IP for communication and supports an I/O capacity of 2560 points.
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| Manufacturer | Omron |
|---|---|
| Product Type | CPU Unit |
| Product Line | CJ2 |
| Part Number | CJ2M-CPU31 |
| Weight | 0.38 lbs (0.17 kg) |
| Mounting Style | Mounted in a Panel |
| Grounding | Less than 100 ohm |
| Current Consumption | 0.7 A @ 5VDC |
| Ambient Operating Temperature | 0 to 55°C |
| Ambient Operating Humidity | 10% to 90% |
| Atmosphere | Must be free from corrosive gases |
| Ambient Storage Temperature | −20 to 70°C (excluding battery) |
| Communication Protocols | Built-in EtherNet/IP |
| I/O Capacity | 2560 Points |
| Mountable Units (Expansion Racks) | 40 Units (3 Expansion Racks Max.) |
| Program Capacity | 5k Steps |
| Data Memory Capacity | 64k words (DM: 32k words, EM: 22k words x 1 bank) |
| LD Instruction Execution Time | 0.04 μs |
The Omron CJ2M-CPU31 is categorized as a CPU unit that features panel mounting for straightforward installation. Designed with a grounding resistance of less than 100 ohms, it maintains reliable operation in diverse environments. This unit requires a current consumption of 0.7 A at 5VDC, suitable for efficient performance.
Optimized for a broad range of operating conditions, the device can function in ambient temperatures from 0°C to 55°C and withstand storage temperatures from -20°C to 70°C (excluding the battery). The humidity level can range between 10% and 90%, although it should be installed in atmospheres that are free from corrosive gases to ensure longevity.
The CJ2M-CPU31 supports EtherNet/IP communication protocols, enhancing its connectivity features. It has a remarkable I/O capacity of 2560 points and provides the ability to mount up to 40 units with a maximum of 3 expansion racks. This CPU unit has a program capacity of 5,000 steps, and its data memory capacity is divided into 64k words, consisting of 32k words for data memory (DM) and 22k words for extended memory (EM) in one bank. The execution time for LD instructions is approximately 0.04 microseconds.