Beckhoff · TwinCAT 2 NC
An unacceptable value (outside the range of 1 to 255) has been used for a channel identifier, or the specified channel does not exist within the current system configuration. This parameter error prevents proper identification and control of the specified channel, leading to operational failure or incorrect routing of commands.
Click steps to track your progress.
1. Review the NC program or PLC logic that initiated the command and correct the channel identifier to a valid range (1-255).
2. Verify the NC configuration parameter P3-01 ('Number of Channels') matches the actual number of configured channels.
3. Check the channel mapping in the NC setup (e.g., System Configuration menu > Channels) to confirm the existence of the specified channel.
4. Reload the correct NC configuration file from a verified backup to ensure proper channel definitions.
5. Debug the HMI or PLC interface sending the channel identifier to ensure it respects the NC's defined range.