After setting the counter with an external signal, the STS_SYNC bit is set in the DB. The STS_SYNC
bit is cleared by the RES_SYNC bit.
Note
The synchronization of a counter with the zero mark only makes sense if the gate is open.
When setting a counter with an external signal, if you have only enabled one count direction,
please note the following: When the door closes, only the current count direction is stored
(frozen). Hence it is possible for the counter to be synchronized in the opposite direction to the
enabled count direction.
Hardware interrupt
Setting a counter with an external signal can be used to trigger a hardware interrupt.
Setting counter with input 1I2 (2I2)
A counter can be loaded with the load value via a rising edge at input 1I2 (2I2).
You can specify the behavior of an FM°450-1 counter with a positive edge at input 1I2 (2I2) with
the ENSET_UP and ENSET_DN variables in the DB of the FC_CNT_CTRL and by means of
parameter assignment.
Bit Behavior of the FM 450-1
ENSET_UP set The counter is only set in the case of up counting
ENSET_DN set The counter is only set in the case of down counting
ENSET_UP and ENSET_DN
set
Counter is set for up and down counting.
Parameter assignment Behavior of the FM 450-1
Parameter assignment
"single setting of counter"
The counter is set only at the rst rising edge at input 1I2 (2I2).
If the counter is to be set again, you must rst set ENSET_UP or ENSET_DN
again. The counter is then set again with the next positive edge at input 1I2
(2I2).
Parameter assignment
"multiple setting of coun‐
ter"
As long as ENSET_UP or/and ENSET_DN are set, the counter will be set with
each rising edge at input 1I2 (2I2).
Note
It is imperative that you set one of the two variables, ENSET_UP or/and ENSET_DN, so that the
relevant counter can be set via input 1I2 (2I2).
Modes, settings, parameters and commands
8.11 Command: Set counter
Counter module FM 450-1
72 Equipment Manual, 03/2022, A5E03648739-AC
To Next Page
Loading...
