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C404H
Protocol Cancel Request Error
Mitsubishi Electric · MELSEC iQ-R Module Dedicated Instructions
Hva betyr C404H ?
This error occurs when a cancellation request is received for the m-th protocol while multiple protocols are being executed continuously by the GP.ECPRTCL instruction. The Ethernet module records the protocol number m currently being executed and the receive packet number of successfully collated protocols (1 to m-1) that were already executed.
Vanlige årsaker
- A cancel request is received during execution of the mth protocol while multiple protocols are executed continuously.
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- 1
Check if an external cancellation request was sent during GP.ECPRTCL instruction execution to verify intentional cancellation.
Verifisert teknisk data. Sist oppdatert: March 2026
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Kilde: Mitsubishi Electric MELSEC iQ-R Module Dedicated Instructions