OVERVIEW

Official designation: Omron CS1W-SCU21-V1 (SYSMAC CS1 Series, Serial Communications Unit)

Role/Application: This unit provides two RS-232C ports for serial communications in the CS1 PLC system, supporting Host Link, NT Link, and Serial Gateway functions.

KEY SPECS SUMMARY

Ports: Two RS-232C

Baud Rate: Up to 115.2 kbps

Current Consumption: 0.29 A at 5 VDC

Max Cable Length: 15 meters

Max Units per Rack: 16

Connection Type: D-Sub connector

Operating Temp: 0 to 55 degrees C

I/O Allocation: Refer to the latest manufacturer manual.

Lifecycle: Commercialized

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the primary communication protocols supported by the CS1W-SCU21-V1 unit?

A: Protocols supported include Host Link, NT Link, and Serial Gateway, which covers Modbus RTU.

Wiring & Installation:

Q: What is the maximum recommended cable length for the RS-232C ports on this module?

A: The maximum cable length for the RS-232C ports is 15 meters.

Troubleshooting & Compatibility:

Q: Does the CS1W-SCU21-V1 module support the use of the no-protocol function?

A: Yes, the no-protocol function is supported, but requires a unit version of 1.2 or later.

Replacement & Upgrades:

Q: Is there a similar unit available that offers a faster RS-232C baud rate than 115.2 kbps?

A: The CJ1W-SCU22, for the CJ-series, supports faster baud rates up to 230.4 kbps.