Delta AS Series Programming Manual page 559

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Note 1: P: single-phase pulse input, D: Direction signal input, A and B: two phase two input, R: Reset signal input. Only

one out of four input modes can be used in PLC programing. For example, if HC200 is edited, the HC20-HC203 can no

longer be edited.

Note 2: -- indicates that the counting mode is reserved and not available now. An empty box indicates no function.

Note3: refer to the SM/SR table for count up/down state selection and the number of times for frequency input.

Note 4: the R function (reset input) is disabled by default. Refer to the SM/SR comparison table for how to use R.

Take HC200 for example. SM291 switches to ON to start the R function and then the rising edge of X0.12 triggers

clearing the value of HC200. If there is no built-in input points, including X0.12 ~ X0.15, in the PLC you are using, you

can use external interrupts or use counter eraser instructions to clear the counters.

Software counter:

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