Thanks all for all the info.
Foxboro rep mentioned that in most cases "green dead" CPs are caused by
nodebus traffic jams. I am going through the configuration to see if any
improvement can be done. We have about 13 IND blocks with endless loops
basically setting and clearing the alarm bit of CIN blocks (these blocks
in turn light up the annunciator panel). There is one assignment in the
IND block with the form:
::MY_CIN_BLOCK.UNACK := FALSE;
The block CIN block "MY_CIN_BLOCK" is in the same compound as the IND block.
So my question is, shouldn't the above assignment have only ONE leading
colon? In the B0193AV manual, it says that the leading colon "Begins an
external reference to a block, compound or block parameter, or shared
variable. ". Does the word "external" here mean " external to the IND block"
or external to the station where the IND resides? What I am trying to
determine is whether the above assignment generates nodebus traffic.
Guoqiang Lu
P.S. I am running IA 4.3. Image: V4.2.4 CP40 12-19-97, OM V4.2.4 T1, IPC
41.2 9/07/94, etc.........
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