Yaskawa YASNAC PC NC I/O Signal Function Manual - Manual (Page 9)

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YASNAC PCNC I/O Signal Function Manual Chapter 1: Feed Function
1.1 F-1 Digit Selection Signal
By the designation of a single-digit number (1 to 9) following address F, the feedrate correspond-
ing to the designated number is selected. Actual feedrates to be called in respond to designated
one-digit numbers are set for setting parameters pm0820 to pm0828.
When the “F1” input signal is in the “closed state”, the currently selected feedrate can be
increased or decreased by turning the manual pulse generator.
When the “F1” input signal is in the “open state”, it is not possible to change the feedrate by
turning the manual pulse generator.
IMPORTANT!
1. If the F1 digit feed function is selected, it is not possible to designate feedrates of
1mm/min. to 9mm/min. by the F function. In this case, designation is only possible for
feedrates of 10mm/min. or greater.
2. If the dry run switch is ON, the feedrate set for dry run operation is valid.
3. The feed override function is invalid when the F-1 digit feed function is used.
4. Feedrates set for setting parameters pm0820 to pm0828 remain valid even if the power
is turned OFF.
5. Feedrates called by the designation F1 digit codes are clamped in the following man-
ner:
If a parameter in the range from pm0820 to pm0923 exceeds the value set for pm2864, the fee-
drate to be called is clamped at the value set for pm2865. If a parameter setting in the range from
pm0824 to pm0828 exceeds the value set for pm2866, the feedrate to be called is clamped at the
value set for pm2867.
If the value set for the maximum feedrate setting parameter for F-1 figit feed function is greater
than the value set for the maximum feedrate setting parameter for the normal F function, the max-
imum feedrate for the F-1 digit feed function is clamped at the feedrate set for the maximum fee-
drate setting parameter for the normal F function.
F-1 Digit F-1 #30076