5.6.6.4
Additional functions counter 3
Exclusively counter 3 has the following additional functions:
n
HW gate via
Gate 3
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Latch function
5.6.6.4.1 HW gate via Gate 3
Starting, stopping and interrupting a count function of counter 3 happens via the internal
gate (I gate). The i gate is the result of logic operation of HW gate and SW gate. The HW
gate evaluation of the connection
‘Gate 3’
may be deactivated by the parametrization.
With a de-activated HW gate evaluation the triggering exclusively happens by setting the
SW gate of SFB 47.
Counter 3:
SW gate
HW gate
Gate function
Reaction counter 3:
Edge 0-1
de-activated
Abort count process
Restart with load value
Edge 0-1
de-activated
Interrupt count process
Continue
Edge 0-1
1
Abort count process
Continue
1
Edge 0-1
Abort count process
Restart with load value
Edge 0-1
1
Interrupt count process
Continue
1
Edge 0-1
Interrupt count process
Continue
Counter 3 - count once
If the internal gate has been closed automatically it may only be opened again under the following conditions:
SW gate
HW gate
I gate
1
Edge 0-1
1
Edge 0-1 (after edge 0-1 at HW gate)
Edge 0-1
1
5.6.6.4.2 Latch function
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As soon as during a count process an edge 0-1 is recognized at the "Latch" input of
counter 3, the current counter value is stored in the according latch register.
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You may access the latch value via the parameter LATCHVAL of SFB 47.
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A just in LATCHVAL loaded value remains after a STOP-RUN transition.
Function
VIPA System SLIO
Deployment I/O periphery
Counting > Counter - Additional functions
HB300 | CPU | 013-CCF0R00 | en | 17-20
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