TRACE

Concept Link IconSee also

To generate a trace in SCADA BASIC and output as part of PcVue's event log.

WebVue support - Yes.

Syntax

TRACE(Mode, String);

There is no return type.

Argument

Meaning

String

The message to be logged. Type STR.

Execution

Mode

Mnemonic

Action

3

LOG

To send a message to the Event Viewer and Bin\Log Files\Trace.log file.
If executed in a WebVue session context this instruction is processed by the computer that hosts the web back end and the trace is generated on that computer.

6

FILE

To send a message to the Bin\Log Files\MacroTrace.log file.

If executed in a WebVue session context this instruction is processed by the computer that hosts the web back end and the trace is generated on that computer.

This instruction is provided as a facility to generate a system event log comprising both PcVue's traces and project level activity traces. Generating too many traces makes it impossible to use the event log for post-mortem analysis. It is strongly recommended that application designers refrain themselves from using this instruction as a debugging facility for project scripts with the consequence of polluting the event log.