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from the Rung modification department...
Sub rung modification
HMI topic
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Posted by Brian on 27 January, 2008 - 9:59 pm
We would like to add a new signal in the cooldown sequence in the MKV panel. But we have come accross an hurdle as we opened the above rung using the seqedit.exe file, (normally we used to do some small modifications in the rung display without any problem) in the page we opened we have a list of signals all related the cooldown the segment were we have to add the new signal for the vapor evaporator. Now we would like to know how to edit the sub rungs under the above rung, would be grateful if anyone could give us the procedure to edit the sub rungs using the seqedit.exe file.

Thanks in advance,

Brian

Posted by CSA on 1 February, 2008 - 11:40 pm
One cannot modify logic in a sequencing BBL; it's coded in the PROM.

One can re-write the sub-rung as required immediately after the sequencing BBL (just "below" it). This will result in a warning message that the coil has multiple writes (one inside the sequencing BBL and one outside); "the last write wins" in each scan of the CSP.

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