Product Description

​The Omron CJ1W-EIP21 is an EtherNet/IP communication unit designed for integration with Omron's CJ-series programmable logic controllers (PLCs). It enables seamless data exchange between PLCs and other EtherNet/IP-compatible devices, supporting high-speed cyclic communications with a tag data link capacity of over 180,000 words. The unit supports flexible network configurations, including star topology using Ethernet switches, and offers features like memory storage for unit and tag data link settings, enhancing operational efficiency and network reliability.

Technical Specifications

• Model Number: CJ1W-EIP21​
• Type: EtherNet/IP Unit​
• Omron Philippines
• +2
• Omron Philippines
• +2
• DigiKey
• +2
• Applicable PLCs: NJ-series, CJ-series (CJ1, CJ2), CP1H, and NSJ series PLCs​
• Omron Philippines
• +3
• DigiKey
• +3
• Omron Philippines
• +3
• Unit Classification: CJ-series CPU Bus Unit​
• TRW Supply
• +3
• Omron Philippines
• +3
• DigiKey
• +3
• Mounting Location: CPU Rack or Expansion Rack​
• Omron Philippines
• +3
• DigiKey
• +3
• Omron Philippines
• +3
• Number of Units per System:
• NJ-series: Up to 4 units (including Expansion Racks)​
• DigiKey
• +1
• Omron Philippines
• +1
• CJ-series and NSJ-series: Up to 8 units (including Expansion Racks)​
• CP1H: Up to 2 units​
• CPU Unit Memory Usage:
• Allocated CIO Area: 25 words per unit​
• Allocated DM Area: 100 words per unit​
• Omron Philippines
• +3
• DigiKey
• +3
• Omron Philippines
• +3
• User-Set Area: Flexible data area allocation​
• DigiKey
• Transfer Specifications:
• Media Access Method: CSMA/CD​
• TRW Supply
• +2
• DigiKey
• +2
• Omron Philippines
• +2
• Transmission Media: Shielded twisted-pair (STP) cable​
• TRW Supply
• +2
• DigiKey
• +2
• Omron Philippines
• +2
• Transmission Distance: Up to 100 meters between hub and node​
• DigiKey
• +2
• Omron Philippines
• +2
• TRW Supply
• +2
• Baud Rate: 100 Mbit/s (100Base-TX)​
• Omron Philippines
• +1
• DigiKey
• +1
• Electrical Characteristics:
• Current Consumption: 410 mA maximum at 5 V DC​
• Omron Philippines
• +1
• TRW Supply
• +1
• Weight: 94 g maximum​
• Omron Philippines
• Dimensions: 31 mm (W) × 90 mm (H) × 65 mm (D)​
• Omron Philippines
• Additional Features:
• Non-volatile memory for unit and tag data link settings
• Support for explicit messaging and FINS messaging
• SNMP support for network management
• Compliance with EtherNet/IP conformance test CT11​