Adding symbols

Use Symbols to add new entries to the Audit Trail. Here it is only possible to log write commands from the client to the server. If there is a write command from a symbol added to the Audit Trail, the value change is logged in the Audit Trail together with the user and timestamp.

Adding a symbol in Visual Studio / TcXaeShell

1. Open the TwinCAT HMI Configuration window.

2. Go to the Server Symbols / Mapped Symbols tab.

3. Select the symbols to be added to the Audit Trail.

4. Add these to the Audit Trail configuration by right-clicking on Audit Trail Settings.

A pop-up opens for further settings.

5. Define whether symbol monitoring is active and a comment must be entered when writing.

The symbols you have configured are now automatically logged in the Audit Trail during a write operation. If the comment function has been activated, this is also entered.

Adding a symbol via the server configuration page

1. Open the server configuration page.

2. Go to the TcHmiAuditTrail / General tab.

3. Go to Activated symbols.

All currently configured symbols are displayed here.

4. Click on Add to create a new symbol.

5. Enter the corresponding symbol for the name.

6. Set Active to true so that the selected symbol is included in Audit Trail.

7. Set Comment required to true so that a comment must be entered during the writing process.

The symbols you have configured are now automatically logged in the Audit Trail during a write operation.