Q: Why do I get a Security Violation error when trying to write data from CX-Programmer to CP1 series PLC, through CP1W-CIF41?
Communications between CX-Programmer and CP1 PLC is working, but CX-P prompts error when attempting to write to PLC memory area via CP1W-CIF41. When connected via USB, writing data works well.
A: There is a CP1H setting called FINs write protection. When checked, it only allows certain nodes to write data to the PLC using FINs. Uncheck the parameter to allow communications
Date/Revision History
Submitted for review 1/24/2025
Author:
Ed Gallagher, Technical Support Specialist
References
CP1H Unit Operation Manual W450
CP1L-E Operation Manual W516
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