we are a leading SCADA system Developers. our 486 based RTU has 17 processes
running & communicationg with a Master unit on a multidrop serial link. The
sytem RTC clock of the RTU is regularly updated( every 3 min) using the
‘rtc’ command. We have observed that after some time the RTU stops working &
the sin command shows that all the processes are blocked on ‘0’. All
programs have their inbuilt timers for periodic updates. The blocking
phenomenon is not periodic , but random & occurs randomly in any of the
RTUS. Please HELP us to resolve this.
Staff
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end