Re: [foxboro] CP60 vs IEC61508 safety requirements



    Waseem,


    Use the latest FCM firmware
    Use the latest CP60 image
    Use fiber hub not fiber switch
    
    Lock PIO BUS on BUSA for 8 hours
    monitor/historize CPNAME_STA:STATION.PIOEGB
    monitor/historize CPNAME_STA:STATION.PIOEFT

    Lock PIO BUS on BUSB for 8 hours
    monitor/historize CPNAME_STA:STATION.PIOEGB
    monitor/historize CPNAME_STA:STATION.PIOEFT

    Turn off Periodic Switching



     Regards,



     Scott

   


________________________________________
From: foxboro-bounce@xxxxxxxxxxxxx [foxboro-bounce@xxxxxxxxxxxxx] On Behalf Of 
waseem ghani [waseemghani@xxxxxxxxx]
Sent: Thursday, November 05, 2009 1:59 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] CP60 vs IEC61508 safety requirements

Hi All
We are facing intermittent " PIO Bus Access error on A" and "PIO Bus Access
error on B" and this returns by itself. We used to have these type of system
alarms once or twice a week, but today this is sounding back to back. We are
using CP60 FT with 200 Series FBMs and FCMs with fibre optic cable and fibre
optic converter switches fro communication between CP and FCMs. The system
is using both the busses alternatively but with each trasnition it sounds
system alarm with above message every time with a new letterbug of FBMs.
Does anybody has any idea how to fight the problem?
Thanks
Waseem




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