12.6 Limit counter L4UFCNT
12.6.1 Function description
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Limit counter L4UFCNT -
12.6.2 Application
Limit counter (L4UFCNT) is intended for applications where positive and/or negative
flanks on a binary signal need to be counted.
The limit counter provides four independent limits to be checked against the accumulated
counted value. The four limit reach indication outputs can be utilized to initiate
proceeding actions. The output indicators remain high until the reset of the function.
It is also possible to initiate the counter from a non-zero value by resetting the function to
the wanted initial value provided as a setting.
If applicable, the counter can be set to stop or rollover to zero and continue counting after
reaching the maximum count value. The steady overflow output flag indicates the next
count after reaching the maximum count value. It is also possible to set the counter to
rollover and indicate the overflow as a pulse, which lasts up to the first count after rolling
over to zero. In this case, periodic pulses will be generated at multiple overflow of the
function.
12.6.2.1 Setting guidelines
The parameters for Limit counter L4UFCNT are set in the local HMI or PCM600.
Section 12 1MRK 511 286-UUS A
Monitoring
294
Application manual
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