To ensure the Jog switch is only active in Manual mode, which tag address should be used in the XIC instruction?

The choice of using the tag address "Local:1:I.Data.7" in the XIC (Examine if Closed) instruction is appropriate for verifying the state of the Jog switch specifically when the system is in Manual mode. This tag address likely corresponds to the input channel that indicates the status of the Manual mode, and thus allows the controller to evaluate whether the Jog switch functionality should be enabled.

In a typical setup, it’s essential that the Jog switch operates only under certain conditions—in this case, when the system is set to Manual mode. By implementing the XIC instruction with this particular address, the control logic effectively checks for the Manual mode state, ensuring that the Jog switch is not inadvertently activated while the system might be in another mode, which could lead to unintended operations or safety issues.

This precise addressing is a crucial aspect of designing a reliable control system, as it helps to maintain operational integrity and safety by restricting functions to their intended modes. Each input channel corresponds to specific bits that reflect different states or conditions in the automation process, making it vital to select the right address that accurately represents Manual mode conditions.