F1-Digit Feed - Mitsubishi Electric MELDAS C6 Programming Manual

7. Feed Functions

7.3 F1-digit feed

Function and purpose
By setting the F1-digit feed parameter, the feedrate which has been set to correspond to the 1-digit
number following the F address serves as the command value.
When F0 is assigned, the rapid traverse rate is established and the speed is the same as for G00.
(G modal does not change.)
When F1 to F5 is assigned, the feedrate set to correspond to the command serves as the
command value.
The command greater than F6 is considered to be the normal cutting feedrate.
The F1-digit command is valid only in a G01, G02 or G03 modal.
The F1-digit command can also be used for fixed cycle.
Detailed description
Set the corresponding speed of F1 to F5 with the base specification parameters "#1185 spd_F1" to
"#1189 spd_F5" respectively.
Operation alarm "104" will occur when the feedrate is 0.
(1) Operation method
(a) Make the F1-digit command valid. (Set the base specification parameter "#1079 F1digt" to 1.)
(b) Set F1 to F5. (Base specification parameter "1185 spd_F1" to "#1189 spd_F5")
(2) Special notes
(a) Use of both the F1-digit command and normal cutting feedrate command is possible when the
F1-digit is valid.
(Example 1)
(b) F1 to F5 are invalid in the G00 mode and the rapid traverse rate is established instead.
(c) If F0 is used in the G02 or G03 mode, a program error (P121) will result.
(d) When F1. to F5. (with decimal point) are assigned, the 1mm/min to 5mm/min direct
commands are established instead of the F1-digit command.
(e) When the commands are used with the millimeter or degree units, the feedrate set to
correspond to F1 to F5 serves as the assigned speed mm (°)/min.
(f) When the commands are used with inch units, one-tenth of the feedrate set correspond to F1
to F5 serves at the assigned speed inch/min.
(g) During a F1-digit command, the F1-digit number and F1-digit command signal are output as
the PLC signals.
F0 Rapid traverse rate
F1 to F5 F1-digit
F6 or more Normal cutting feedrate command
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7.3 F1-digit feed