Skip to main content

8.3 Table Monitor

  • The monitoring table monitors and modifies variable values ​​in the PLC in real time during the debugging process, including supporting multiple variable types and creating multiple monitoring tables to meet different debugging needs. It is an important tool for debugging PLC programs Picture alt

8.3.1 Add monitoring table​

  • Right-click Monitoring Table in the Project tree
  • Click Add Monitoring Table in the submenu to complete the addition of the monitoring table Picture alt

8.3.2 Add variable​

8.3.2.1 Directly add variable​

  • Directly click Add in the Variable Name column of the Monitoring Table
  • Click the variable to be added in the prompt box to complete the variable addition Picture alt

8.3.2.2 Add the table first, then add the variable​

  • Click the Add Row icon of Monitoring Table
  • Click the variable name corresponding box in the newly added row
  • Click the variable to be added in the prompt box to complete the variable addition Picture alt

8.3.2.3 Batch adding variables in GVS​

  • Multi-select the variables in the GVS variable table.
  • Right-click to add to the monitor table, then you can choose to create a new monitor table or add to an existing monitor table, as shown in the following figure

alt text

  • After adding the monitoring table, the content of the monitoring table is shown as follows

alt text

8.3.3 Monitoring variables​

premise

The monitored variables have been downloaded to the PLC for operation

  • Click the monitoring icon of monitoring table to successfully monitor the variable Picture alt

8.3.4 Delete the added variable​

8.3.4.1 Delete the variable by deleting the table​

  • Select the row of the table corresponding to the variable to be deleted
  • Click the delete row icon of the monitoring table to successfully delete the variable Picture alt

8.3.5 Write once​

premise

PLC is in RUN state

  • Enter the modified value in the modified value box corresponding to the variable whose value needs to be written
  • Click the Write Once icon of the monitoring table Picture alt

8.3.6 Online continuous writing​

premise

During the online continuous writing process, the PLC is in the RUN state, and the connection between the upper computer and the lower computer cannot be interrupted

  • Enter the modified value in the modified value box corresponding to the variable that needs to be written
  • Click the Online continuous writing icon of the monitoring table Picture alt

8.3.7 Cancel online continuous writing​

premise

PLC is in RUN state

  • Click the Cancel Online Continuous Writing icon of the monitoring table
  • Check the corresponding variables in the Cancel Online Continuous Writing window
  • Click OK to complete the cancellation of online continuous writing Picture alt
NOTE

If Clear Modified Values ​​is checked in the "Cancel Online Continuous Writing" window, the Modified Values ​​box of the monitoring table will be cleared. Otherwise, after canceling the online continuous writing, the modified value will still be retained

8.3.8 Sequence diagram​

premise

The variables that need to be monitored are already in the monitoring table and are in monitoring status

  • Click on the Sequence Diagram in the monitoring table
  • Click the Start icon of the sequence diagram
  • Click the stop icon of the timing diagram to stop the trace
  • Click the Clear icon of the timing diagram to clear the trace record Picture alt