Manufacturer: Omron
Product No.: CJ1W-ETN21
Country of origin:Japan
Product Type: PLC Ethernet Modules
Payment: T/T, Western Union
Weight: 100g
Shipping port: Xiamen
Warranty: 12 months
Facilitating seamless network integration, the Omron CJ1W-ETN21 Ethernet communications module links CJ-series controllers to higher-level enterprise systems and peer control networks. This CPU Bus Unit mounts directly onto a CJ-series CPU Rack or Expansion Rack, providing dedicated 100Base-TX and 10Base-T physical interface ports. Engineered for stable industrial data exchange, the module supports standard TCP/IP and UDP/IP protocols, allowing multiple simultaneous socket connections and reliable PLC-to-PLC data link synchronization.
| Parameter | Specification |
|---|---|
| Manufacturer | Omron |
| Model Number | CJ1W-ETN21 |
| Unit Classification | CJ-series CPU Bus Unit |
| Physical Layer / Port Type | 100Base-TX (Backward compatible with 10Base-T) |
| Modulation Method | Baseband |
| Transmission Topology | Star form |
| Maximum Cable Distance | 100 meters (distance between hub and node) |
| Mounting Location | CPU Rack or Expansion Rack |
| Current Consumption | 370 mA maximum at 5 V DC |
| Net Unit Weight | 0.10 kg |
| Shipping Weight (Calculated) | 1.5 kg |
The CJ1W-ETN21 replaces older-generation CJ1W-ETN11 models. When replacing an ETN11 module, verify the allocation of DM area words and system settings in the CPU, as additional routing and socket configuration blocks are enabled in the ETN21 firmware structure.
To ensure stable communication under maximum industrial traffic load, the internal 5 V DC power draw must be accounted for during total rack power budget calculations. Ensure that the total 5 V DC current drawn by all modules connected to the CPU or Expansion Rack does not exceed the rated output capacity of the installed power supply module.
Use high-quality double-shielded twisted pair (STP) Category 5 (or higher) cables for connection to the network switch. Ground the cable shield properly at the network switch side. Avoid running Ethernet communication cables parallel to high-voltage power lines or variable frequency drive (VFD) output cables to minimize high-frequency electromagnetic interference.
Prior to physically inserting or removing this module from the backplane, completely shut off the power supply to the entire PLC rack. Hot-swapping the CJ1W-ETN21 can lead to permanent damage to the CPU backplane interface, corrupt volatile memory registers, or trigger immediate system-wide CPU bus errors.
Global Express Shipping
Returns & Warranty
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
|
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