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13.3.1
24V Pulse Initiator With/Without Direction Indicator
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
EWA 4NEB 780 6009-02c
The pulse initiator – a proximity switch (BERO) or light barrier, for example
– supplies only one count signal, which must be connected to terminal A on
the terminal block.
You can also connect a signal for direction identification to terminal B of the
terminal block. If you do not connect a direction signal, the counter counts
upward.
Note the parameterization of the count direction.
Signal A
Signal B as
direction in-
Upward
dicator
Count pulses
upward
Count pulses
downward
Figure 13-10 Signals of a 24V Pulse Initiator with Direction Indicator
The 1COUNT40kHz Counter Module
Downward
13-7
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