Mitsubishi Electric MELDAS C6 Interface Manual page 305

B con-
Signal name
tact
MANUAL FEEDRATE
—
(File register method)
[Function]
When file register method (JVS) is selected for feedrate setting, feedrate can be specified, besides
code method (*JV1~JV16) setting, by setting desired feedrate ratio manually (value is set to file
register (R)).
[Operation]
This method of feedrate setting can be used in JOG feed, incremental feed, reference point return
feed and manual random feed mode. For JOG, INCREMENTAL and reference point return mode,
"Rapid traverse speed" (RT) signal should be OFF. For manual random feed mode,
"EX.F/MODAL.F" signal (CXS3) should be OFF. Feedrate specified in this method can be applied
to feed motion in dry run (automatic operation).
The use of this signal is conditioned as follows:
(1) When "Manual feedrate override valid" signal (OVSL) is OFF, the originally set feedrate is
applied.
(2) When "Manual feedrate override valid" signal (OVSL) is ON, the feedrate override ratios of "1st
cutting feedrate override" and "2nd cutting feedrate override" are applied to the originally set
feedrate.
(3) Manual feedrate is set to file registers Rn and Rn+1. The feedrate depends on "feedrate least
increment" (PCF1, PCF2) as listed below.
PCF2 PCF1
(mm/min or inch/min)
0 0
0 1
1 0
1 1
(4) Feedrate clamp (max. feedrate) depends on setting of axis parameter (cutting feedrate clamp)
... when "Rapid traverse" signal (RT) is OFF.
(Note 1) During incremental feed mode, the true feedrate does not change even when the manual
feedrate setting is changed while feed motion is going on.
(Note 2) As for file registers (Rn and Rn+1), Rn is of lower order.
Of the file registers Rn and Rn+1 which designate the feedrate, if the value is 2-bytes (one
word), the high-order side does not need to do anything.
[Related signals]
(1) Manual feedrate (code method: *JV1~*JV16: Y770~774)
(2) Manual feedrate method select (JVS: Y777)
6. EXPLANATION OF INTERFACE SIGNALS
6.4 PLC Output Signals (Data Type: R***)
Signal
abbreviation
Least increment
10 10mm/min (inch/min) when "1" is set in file registers.
1 1mm/min (inch/min) when "1" is set in file registers.
0.1 0.1mm/min (inch/min) when "1" is set in file registers.
0.01 0.01mm/min (inch/min) when "1" is set in file registers.
1st system
R904, 905
Operation
6-4-15
2nd system 3rd system
R1004, 1005 R1104, 1105