19
I/O Terminal /
MANUAL CONFIGURATION
Bit
Bit
Function
adjustable in the feature register
(default).
2
Cnt_Set
The counter is set to the value that is
specified via the process data with the
rising edge of Cnt_Set.
En_Latch_Ext
The external latch input is activated for
positive edge. With the first external
latch impulse after validity of the
En_Latch_Ext bit, the counter value in
the latch register is stored. The pulses
that follow have no influence on the
latch register when the bit is set.
Attention must be paid to ensuring that
the corresponding latch valid bit
(Latch_Ext_Val) has been removed
from the terminal before alerting of the
zero pulse. This functionality is
adjustable in the feature register
(default).
1
RD_Period
The periods between two positive
edges of the input A are measured with
a resolution of 200 ns. When the bit is
set, this period is output in the data
bytes D2, D3, D4. This functionality is
adjustable in the feature register.
0
En_Latch
The zero point latch (C input) is
activated. The counter value is stored in
the latch register with the first external
latch pulse after validity of the En_Latch
bit (this has priority over En_Latch_Ext).
The pulses that follow have no
influence on the latch register when the
bit is set. Attention must be paid to
ensuring that the corresponding latch
valid bit (Latch_Val) has been removed
from the terminal before the zero pulse
is alerted (the Latch_Val bit cannot be
removed from the terminal until the C
pulse has a low level).
Note:
For the external latch input: The activation of the positive edge (En_Latch_Ext = 1) has
priority to the activation of the negative edge (En_Latch_Ext_n = 1).
