Local process diagnostics

06 December, 2022

Local information

This additional information is also very useful during installation and commissioning work. The ability to access diagnostic information locally can significantly reduce the time required to complete an installation. An over-reliance on the HMI to provide all the system information means that installers and plant operators need more time to identify issues and find the root cause.

To compound the situation, the PLC will only pass on warnings or alerts about circuits or problems that it has been programmed for. Normally, this would be done during the commissioning process, but there are opportunities for some warnings to be overlooked or new equipment may not be fully integrated.

Furthermore, unless all of the codes from the control valves and sensors have been correctly interpreted in the PLC, this information may be missing or misidentified. Rather than interrogating the PLC or repeatedly going back to the HMI to read the messages, the best solution is to use local diagnostics as a quicker route to identify any issues and getting them resolved.

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