5.6.6.4 Additional functions counter 3
Exclusively counter 3 has the following additional functions:
n HW gate via Gate 3
n 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 the 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
n 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.
n You may access the latch value via the parameter LATCHVAL of the SFB 47.
n A just in LATCHVAL loaded value remains after a STOP-RUN transition.
Function
VIPA System MICRO
Deployment I/O periphery
Counting > Counter - Additional functions
HB400 | CPU | M13-CCF0000 | en | 16-47 113
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