Brian,
From : B0700AG - Rev Z
The total number of ladder logic lines for all ladders in a given FBM needs to
be less than 98.
The FBM can accommodate approximately 850 bytes of object code representing the
ladder logic.
This can support about 390 user-entered ladder symbols. (Straight line
horizontal and vertical segments can be considered as using no memory.)
Ladder logic is executed rung by rung from top to bottom of the ladder. Ladders
are executed at an average of 300 ladder logic symbols in 20 to 25 ms.
If an FBM241, Ladder1.OFL is used for input to FBM241, Ladder2.IFL, how fast
would it see change?
Assuming the two ladders referred to above are in different FBM241s, PLB block
period + the ladder processing time (based upon where the IFL is in the ladder)
Scott Landry | Schneider Electric Systems, NA | Process Automation |
United States | PRINCIPAL SITE SERVICE ENGINEER
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From: foxboro-bounce@xxxxxxxxxxxxx <foxboro-bounce@xxxxxxxxxxxxx> On Behalf Of
Long, Brian
Sent: Tuesday, July 14, 2020 2:46 PM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] Ladder Questions
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Ladder running in an FBM241, using 99 rungs, scans at what speed?
If an FBM241, Ladder1.OFL is used for input to FBM241, Ladder2.IFL, how fast
would it see change?
Thanks,
Brian
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