WEG CLIC-02 Manual Del Usuario página 84

Ladder Logic Programming
7.4.2.5 Counter Mode 4 – Continuous Counting and Retentive
The operation is the same as in the Counter Mode 2, but after a CLIC-02 de-energizing
the counting value will be saved. When CLIC-02 is turned on again, the last value saved
will be loaded again to the counter keeping its condition unchanged. The other functions
and features are the same as in the Counter Mode 2.
In case STOP occurs on CLIC-02 without de-energizing, the counting value will be
„
reset following the counting direction. To avoid this, the system option "C Retentive"
must be enabled, so that the value is maintained even with a STOP command without
de-energizing.
7.4.2.6 Counter Mode 5 – Continuous Counting
The counter can work in two modes, rising or falling counting, selected through the
counting direction input. When in count up mode, input pulses will increase the counting
value until reaching the programmed value, thus starting the counter output contacts when
the counting value is equal to or higher than the programmed one. The counter continues
increasing even after reaching the programmed value. When in countdown mode, input
pulses will decrease the counting value until reaching zero, but the counter output will not
be turned on. The output will be turned off when the reset input is activated. If the counting
direction is changed, the counter output will not change status immediately, following the
comparison between the current value and the programmed value. In case of de-energizing
the counting value will not be maintained.
In the example, counter C01 will continue the counting after reaching the programmed
value of 20 pulses. However, when the counting direction is inverted, the output will be
turned off only when the counting value is lower than the programmed value.
Counting preset
Preset de contagem
Current counting
Valor atual de contagem
value
Counting pulse
Pulso de contagem
Direção de contagem
Counting direction
Reset input
Entrada de reset
Counter output
Saída do contador
When the counter is reset or when the PLC is energized, the initial counting value will
always be 0.
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