80
Counter Function
WAGO-SPEEDWAY 767
767-5803/000-800 8DIO 24V DC 0.5A IF (8xM12)
Manual
Version 1.1.0
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9
Counter Function
The module also makes available two counters independent of one another, which
can be controlled both via the physical connections X1 … X4 (channels 1 …4) of
the module as well as via the process data (control and status byte).
Each counter has a counter input (impulse input), two configurable control inputs
(gate input, count direction), as well as a configurable switching output, which is
set automatically by the module upon reaching a limit value. This way, quick
reaction times can be achieved, which are not dependent on the fieldbus and the
controller.
Default
The gate function is activated in the control byte by default. This bit must be
enabled to use the counter functions (see section “Control Byte”).
The counting takes place edge-controlled; that is, the counter status is incremented
or decremented when there is a change of the signal on the impulse input from
0 V to 24 V, depending on the configuration of the counter as an up or down
counter.
There are three operating modes available for the counter:
•
Event counter
This counts the impulses detected on the impulse input.
•
Gate time counter
It counts the impulses within a definable gate time (time window in which
the measurement takes place). For the gate time of 1 s, you get the
frequency of the input signal in Hz. The gate time counter can be configured
via the process data.
•
Pulse duration counter
This counts the pulse duration in ms.
If the channels are assigned to a counter, you can still configure all available
adjustable channel properties (e.g. inversion or filtering).
Figure 20: Counter status depending on the control inputs (gate and count direction input)
Impulse
Gate
Count direction
Counter value
