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Programming in M7 with the Counter Function Library
7.7
Reading the Counter Value and the Load Value, Scanning and Re-
setting the Status
Scanning
Information
M7CntRead
M7CntStop
7
AndRead
M7CntRead
LoadValue
Scanning the
Counter Status
Resetting the
Counter Status
7-10
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The functions listed below are used for scanning information such as
Counter value
Load value and
Counter status
The counter status can be reset if required.
The counter status can be read with M7CntRead. The current status of the
counter channel is read and stored in the pActCntV return parameter.
The M7CntStopAndRead function stops the counter channel and reads the
counter status simultaneously. The current counter status is then stored in
pActCntV.
The load value of a counter channel can be read with M7CntReadLoadValue.
You can scan the status of the counter channel with the M7CntReadStatus
function. The function returns the counter status. See the description of
M7CntReadStatus in Appendix 12 for the meaning of the individual bits in
the counter status. The function can be used, for example, to scan the zero
pass to see if the counter channel is running, if the counter overflow has
taken place, which counter direction is in force, etc.
Bits that have been set in M7CntReadStatus can be reset again via the
M7CntResetStatus, in order, for example, to detect a renewed zero pass or a
renewed counter synchronization (multiple setting via SET digital input).
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FM 450-1 Counter Function Module
C79000-G7076-C450-01
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