Delta AS Series Programming Manual page 180

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The high-speed comparison interrupt I200

Since the execution of high-speed output has been completed in POU, there is no need to write any program in the

26. Use backlash compensation in CSFO (available for FW V1.08.30 or later)

PLC uses the propositional conversion formula to converse the frequency and pulse numbers for inputs into what are

suitable for outputs. From input to output, this process not only takes time and it may also cause backlash issues. When

the number of pulses run through the input goes larger, so does the backlash.

To precise operation, use the following SM/SR to compensate for backlashes caused by a longtime CSFO operation.

Output axis designated by

Y0.10 / Y0.11

SM1700~1705: Flag to activate the backlash compensation

ON: To increase the actual output frequency and the number of output pulses to close the distance between the

position of input and output. The compensation stops automatically once the positions of input and output are the

same. You can also set this flag to OFF, if the positions of input and output do not need to be the same.

OFF: To decrease the actual output frequency and the number of output pulses to stop compensating till the output

falls behind to its original delayed position.

NOTE: Be sure to close the flag to deactivate the compensation before stopping the execution of CSFO. If not, you

may find the compensated output is still running even after the execution of CSFO has stopped.

SR1700~1710: Increase the frequency to compensate backlashes

You can define the frequency, ranging from 50 Hz~10 KHz (unit: 50 Hz) for the compensation of the backlashes. At

first, it is recommended to try a lower frequency. Otherwise, sudden and quick movements may have an impact on

the mechanism operation. The compensation stops automatically once the positions of input and output are the

same. The frequency unit is 50 Hz; thus, if using 80 Hz, it will be seen as 50 Hz and 120Hz will be treated as 100

Flag to activate the backlash

compensation

Cha p ter 2 De vices

Increase the frequency to

compensate backlashes (Hz)

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