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OVERVIEW
Official designation: Omron CJ1W-SCU21-V1 (CJ1W Series, Serial Communications Unit)
Role/Application: CPU Bus Unit for Omron CJ Series PLCs providing two RS-232C serial ports for high-speed data exchange using Host Link, Protocol Macro, and other communication modes.
KEY SPECS SUMMARY
Power: 5 VDC 280 mA max
Interfaces / Ports: Two RS-232C 9-pin D-Sub Male
Indicators: Refer to the latest manufacturer manual.
Operating Temp: 0 to 55 degrees C
Platform / Compatibility: CJ/CP1H/NSJ Series CPU
Limit: 115.2 kbps max baud rate
Lifecycle: Active
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What is the current consumption when a Link Adapter is connected to the unit?
A: Add 150 mA to the base 280 mA consumption for each NT-AL001 Link Adapter used.
Wiring & Installation:
Q: What is the maximum recommended cable length for the RS-232C communication ports?
A: The maximum recommended communications distance for the RS-232C port is 15 meters.
Troubleshooting & Compatibility:
Q: Which communication functions are supported for each port on the CJ1W-SCU21-V1?
A: Functions include Host Link, Protocol Macro, NT Link, Serial Gateway, No-protocol, and Modbus-RTU Slave.
Replacement & Upgrades:
Q: Which newer model offers a faster maximum communication baud rate than 115.2 kbps?
A: The CJ1W-SCU[]2 high-speed type units support a faster baud rate of up to 230.4 kbps.
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| Category | Details |
|---|---|
| Product Name | See this page for details |
| Model Name | See this page for details |
| Certification or Licensing Information Required by Law | See this page for details |
| Country of Manufacture or Origin | See this page for details |
| Manufacturer | See this page for details |
| After-sales Service Contact or Customer Support Number | See this page for details |
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