Production Module Restart during Batch Run

Production Module Restart

The system restart could happen for various reasons such as a power failure. When the batch system doesn't receive the handshake value to keep running, the batch is put into the Held command.

The PLC detects that the batch engine is not responding (using the Handshake_Value ), the phase is set to Held. When the batch engine starts back up on a Production Module restart, the batch recipe restarts at the point were it was put into the Held state.

• Held, Holding, Restarting: When in these states, batch engine sends a Restart command and waits until the Running state is received.
• Resetting, Stopping, Aborting, Aborted, Internal_Fault, Pausing, Paused or Complete: When in these states, batch engine doesn't send a command. The batch engine lets the final phase outcome in the recipe handle the logic.
• Running: When in Running, batch engine performs the normal Running loop: Start to Complete.