Appendix
413
Appendix
●
Note: instruction setting non-zero speed output to spindle, NC turns F1.4 to 1; when speed instruction
is 0, then the ENB signal is set 0. In analog spindle, spindle motor will rotate in a low
speed in spite of NC outputs instruction 0 to the spindle (namely, analog voltage is 0V),
because the frequency converter has a drift voltage. Under this condition, ENB signal can
used to stop spindle motor.
●
Signal Address:
F38
ENB2
F1
ENB
Gear select signalGR1, GR2 (G28.1, G28.2)
The 2
nd
spindle gear select signal (GR21, GR22, G29.0, and G29.1)
●
Signal Type: PLC
→
CNC
●
Signal Function: This signal informs CNC the current chosen gear-stage, for specific action to see
previously described
●
Signal Address:
G29
GR22
GR21
G28
GR2
GR1
S12-bit code signal R01O~R12O (F036.0~F037.3) R01O2~R12O2 (F236.0~F237.3)
●
Signal Type: NC
→
PLC
●
Signal Function: This signal changes spindle speed instruction value computed by NC spindle control
function into data 0
~
4095 and outputs the results to PLC. The relationship between 10V
voltage and S 12-bit code is as follows:
●
Signal Address:
F36
R08O
R07O
R06O
R05O
R04O
R03O
R02O
R01O
F37
R12O
R11O
R10O
R09O
F236
R08O2
R07O2
R06O2
R05O2
R04O2
R03O2
R02O2
R01O2
F237
R12O2
R11O2
R10O2
R09O2
Spindle speed arrival signal
Spindle speed arrival signal SAR (G29.4) is input signal, condition of the CNC starts cutting feed.
Usually when spindle comes to an appointed speed, it is used to start the cutting feed. At this moment,
sensor is used to detect spindle speed, which sent to NC by PLC.
When editor PLC program is handling spindle speed arrival, the spindle speed change instruction and
cutting feed instruction issued at the same time, the CNC will start cutting feed, according to the former
SAR signal before the spindle speed changes. To avoid this problem, after issuing S instruction and cutting
feed instruction, it is need that to take a delay monitoring of the SAR signal, delay time set by data
parameterNO.3740.
To use SAR signal, set the corresponding bit parameter first.
Spindle speed arrival signal SAR (G029.4):
Содержание 980MDc
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