Operation of the diagnostics in Control Expert

General

The Control Expert diagnostics function monitors the elements of the process to detect any faults there may be. When a fault occurs, it sends an error message to the display systems which display this fault.

Illustration

Operation of the diagnostics

The table below describes the various phases of operation of the Control Expert diagnostics:

Phase	Description
1	The diagnostics function blocks built into the project program and the diagnostics built into the system detect process faults.
2	The faults are stored in the form of date/time stamped messages in the diagnostics buffer memory.
3	The error messages are then displayed via the following display systems: Diagnostics Viewer or Human Machine Interface (HMI), used to: display messages, acknowledge messages that need an acknowledgement, initialize animation tables and cross-references, launch associated program editors, delete diagnostics buffer alarms.

Phase

Description

1

The diagnostics function blocks built into the project program and the diagnostics built into the system detect process faults.

2

The faults are stored in the form of date/time stamped messages in the diagnostics buffer memory.

3

The error messages are then displayed via the following display systems: Diagnostics Viewer or Human Machine Interface (HMI), used to:

display messages,
acknowledge messages that need an acknowledgement,
initialize animation tables and cross-references,
launch associated program editors,
delete diagnostics buffer alarms.