CJ1W-SCU21-V1 Serial Communication Unit for CJ1 PLCs with RS-232C/422/485 Support

Product Overview

The CJ1W-SCU21-V1 is a high-performance serial communication unit from Omron's CJ Series, designed for seamless integration into programmable logic controller (PLC) systems. This industrial-grade module facilitates reliable and flexible serial communication, enabling robust data exchange between PLCs and a wide range of peripheral devices. Engineered for demanding automation environments, the CJ1W-SCU21-V1 supports multiple industry-standard protocols, ensuring compatibility with barcode readers, sensors, printers, HMIs, and other serial-enabled equipment. Its compact design and dual-port configuration make it an ideal solution for space-constrained control panels while maintaining high-speed data transmission capabilities.

Key Features and Benefits

• Dual-Port Configuration: Features 1 RS-232C port and 1 RS-422A/485 port for versatile connectivity options in industrial settings
• Multi-Protocol Support: Comprehensive protocol compatibility including Host Link, NT Link, 1:1 PLC Link, Toolbus, and Serial Gateway functionality
• Wide Baud Rate Range: Adjustable communication speeds from 300 to 115,200 bps to accommodate various application requirements
• Compact Industrial Design: Space-saving dimensions (31 × 90 × 65 mm) with only 200g weight for easy integration into control systems
• Robust Construction: Designed for reliable operation in industrial environments with an operating temperature range of 0°C to 55°C
• Low Power Consumption: Energy-efficient design requiring only 0.4A at 5V DC, reducing overall system power requirements
• Standard Warranty: Backed by Omron's 1-year manufacturer warranty for guaranteed performance and reliability

Industrial Applications

The CJ1W-SCU21-V1 serial communication unit is engineered for diverse automation and control applications across multiple industries:

• Factory Automation: Enables data exchange between CJ-series PLCs and peripheral devices including HMIs, printers, and barcode scanners
• Inventory Management: Integrates seamlessly with barcode reading systems for real-time tracking and logistics control
• Process Control: Facilitates communication with sensors and measurement devices in continuous process applications
• PLC Networking: Supports 1:1 PLC linking for coordinated control across multiple automation systems
• Data Acquisition: Provides reliable serial communication for SCADA systems and data logging applications

Detailed Technical Specifications

Parameter	Specification
Model Number	CJ1W-SCU21-V1
Serial Interface Configuration	2 ports (1 × RS-232C, 1 × RS-422A/485)
Physical Dimensions (W × H × D)	31 mm × 90 mm × 65 mm (1.22" × 3.54" × 2.56")
Unit Weight	200 g (0.44 lbs)
Power Requirements	5 V DC, 0.4 A (2W typical consumption)
Operating Temperature Range	0°C to 55°C (32°F to 131°F)
Storage Temperature Range	-25°C to 65°C (-13°F to 149°F)
Supported Protocols	Host Link, NT Link, 1:1 PLC Link, Toolbus, Serial Gateway
Baud Rate Range	300, 600, 1,200, 2,400, 4,800, 9,600, 19,200, 38,400, 57,600, 115,200 bps
Warranty Period	1 year manufacturer warranty
Compatible Series	Omron CJ Series Programmable Controllers

Integration and Compatibility

The CJ1W-SCU21-V1 is designed for direct integration with Omron CJ-series PLC systems, providing a reliable communication interface for industrial automation networks. Its protocol flexibility allows connection with a wide range of third-party devices while maintaining data integrity in electrically noisy environments. The unit's compact form factor ensures compatibility with standard CJ-series racks and cabinets, making it an ideal choice for system upgrades or new installations requiring robust serial communication capabilities.