800xA system V5.1 HMI has zero readings
i worked on 800xA System V5.1 to control an oil field instruments. we had an issue when sudden power shutdown happened and both controllers were shown error status and we lost control then we downloaded the application again to controller and they became healthy. ou system has remote connection to 3d party system and a local HMI. ater reloading the application to the controllers, local HMI has zero reading for all parameters while the 3d party system still getting the readings normally. we checked the connection and cables and they are health. please advise what else to check?
Are there any related events in [Workplace Structure]Web System Workplace:System Event List?
What is the OPC Quality Code reported by the diagnostic window of VB6/PG2 (accessible to engineer users when right clicking graphic aspects while on display)?
What OPC Quality Code do you get when subscribing for live data in the config view of Control Module, Function Block, etc aspects in Plant Explorer?
Just a couple of thoughts, not knowing your system setup:
- Lost switch configuration (port config) after power outage?
- RNRP status? (Network Loop problems due to above?)
- Controller Cold Retain/Retain problem, lost parameter values after cold restart and download (i.e mismatch between Retain and Initialize values before power outage)?