Wago 750-644 Safety Control

This error indicates that an invalid target table has been specified for the MBX_GETUSERFRIENLYNAME command. The system expects a specific target table value, such as '2' for WAGO_DEVICE (slots 1-7) or '1' for EXTERNAL_DEVICE (slots 8-12). An incorrect value for the target table prevents the command from identifying the correct device type, leading to command failure.

This error occurs when an invalid table index is selected for the MBX_GETUSERFRIENLYNAME command. Specifically, for 750-644 I/O modules, an index greater than 6 is invalid, and for Bluetooth SPP devices, an index greater than 5 is invalid. This indicates an attempt to access a slot that does not exist or is not supported, preventing the command from completing successfully.