RS Automation NX-POSI1, Руководство пользователя

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Internal Absolute Counter
How the Internal Absolute Counter Works
How the internal absolute counter works

The positioning unit is equipped with a function that counts the number of
pulses output.

The counted value of each axis is stored in the shared memory area of the
positioning unit.

The stored value is read by the user program, enabling the position data
(absolute value) to be discerned. This is used in functions such as teaching
during JOG operation.

Using the comparison relay output function, external output can be obtained in
response to the count value, through the user program.
How the internal absolute counter operates

When the power supply is turned OFF, the counter value is set to zero (0).

When the table returns to the home position by a home return, the counter value
automatically becomes zero (0).

The counter value is counted as an absolute value, based on the pulse output
value.

The value stored in the shared memory can be read using the F150/P150
instruction in the user program.

Overwriting should be done while the operation is stopped.