Lenze I/O system 1000 System Manual - Manual (Page 179)

Product description
I/O compound modules − counter
Two counters 32 bits, 24 V DC − EPM−S601
3
l
179 EDSIO1000 EN 7.0
Counting once
A) No main counting direction:
Limits Counting range
Lower counting limit −2 147 483 648 (−2 31 )
Upper counting limit +2 147 483 647 (2 31 −1)
Function:
ƒ For starting the counting process the internal gate has to be opened.
– The counter counts forwards once from the loading value or backwards in the
preset counting range.
– If the counting limits are not reached or exceeded, the counter skips to the other
counting limit, respectively, the internal gate is closed automatically and the
status bits STS_OFLW or STS_UFLW are set. If enabled, a process alarm is effected.
ƒ For stopping the counting process the internal gate has to be closed.
ƒ For starting the counting process again, the internal gate has to be opened.
– If the gate control is interrupted, the counting process continues at the current
counter content.
– If the gate control is cancelled, the counter starts from the loading value.
Upper counting
limit value
Lower counting
limit value
0
Counter starts
Overflow
Underflow
Time
Counter content
Counter stops
automatically
Counter starts Counter stops
automatically
Loaded value
SLIO031
Fig. 3−52 Example of "Counting once", no main counting direction and with interrupting gate control
Upper counting
limit value
Lower counting
limit value
Loaded value
0
Counter starts
Overflow
Underflow
Time
Counter content
Counter stops
automatically
Counter starts Counter stops
automatically
SLIO032
Fig. 3−53 Example of "Counting once", no main counting direction and with cancelling gate control