Creating a watch table

Watch tables allow for monitoring and controlling the process data exchange.

Proceed as follows:

  1. Switch to the TIA portal.
  2. Establish an online connection between the PLC and the MOVI‑C® CONTROLLER. Click on the "Go online" icon.
    • In the network view and device view, all addressed stations are shown with a green check mark.
  3. Add a new watch table in the "Watch and force tables" subfolder of the PLC.
  4. Enter the addresses of the process data words in the "address" column. The input and output addresses define which process data word is used to address a station. Make sure that the process data words are in the address range of the stations and that the address ranges for input and output process data words are identical.
  5. Enter test values for some process output data words in the "Modify value" column. The values are sent to the MOVI‑C® CONTROLLER if communication has been established successfully.
    • In this example, test values are entered for the first 4 process output data words.
  6. Click the respective icons in the toolbar to first start variable monitoring (glasses icon) and then to control the active variables (flash icon).
    • The set test values of the process output data words are transferred to the "Monitor value" column. The PLC sent the process output data words to the MOVI‑C® CONTROLLER.
  7. Switch to the IEC editor.
  8. Check if the values of the process input data words of the MOVI‑C® CONTROLLER are identical to the sent test values.
  • If the test values sent by the PLC arrived at the MOVI‑C® CONTROLLER, the communication has been established successfully.