TwinCAT3 error output

Errors under TwinCAT3 are output

via the PLC or
directly in the TwinCAT Event Logger.

The overview diagram below shows the general function of the Event Logger:

TwinCAT3 error output 1: — Architecture - overview of the TwinCAT Event Logger

Outputs under TwinCAT 3

In TwinCAT the PRINT channel is interfaced to the Event Logger output:

TwinCAT3 error output 2: — Overview with TwinCAT Event Logger

Default parameter definition

By default, errors are output to the PLC together with logging to the Event Logger via the original ChannelError function block.

If an existing CNC configuration is migrated from TwinCAT2 to TwinCAT3, the start-up parameters for error management require no adaptation in P-STUP-00167 (error_protocol_mode).

Parameter	Parameter name	Setting
P-STUP-00167	error_protocol_mode	PRINT \| LOG \| REPORT
P-STUP-00168	error_text_of_id	<TC3-Install>\components\mc\cnc\diagnostics\ err_text_version_eng.txt
P-STUP-00169	error_text_user_of_id	not assigned
P-STUP-00170	error_log_file_name	<TC3-Install> \components\mc\cnc\diagnostics\error.log
P-STUP-00171	error_log_file_max_size	100000 # maximum length in bytes
P-STUP-00172	error_plc_wait_cycles	5 # waiting cycles [IPO ticks]
P-STUP-00173	error_ao_name	(not assigned

Error texts

With a CNC release, language-specific error texts are automatically installed by the TcCncErrors-xml file.