
16. DIGITAL SERVO
845
For PRM7183 and 7184, set the feedrates at which the tool is
moved toward the mechanical stopper with a limited torque,
considering the machine accuracy.
After the tool strikes the mechanical stopper, and the tool is
withdrawn the distance specified with PRM7182, the withdrawal
point is set as the reference position on the specified axis. Then,
the reference position return end signal and reference position
establishment signal are set to 1.
When PRM1015#2(OKI) is set to 0, ALM000 is issued after
completion of reference position return operation. Turn the power
off then back on before continuing operation.
D After the reference position is set
When the reference position has already been set, performing
butt–type reference position setting causes the tool to be positioned to
the reference position at the rapid traverse rate without the cycle
operation. Upon the completion of positioning, the reference position
return end signal is set to 1.
The timing chart for the cycle operation is shown below.
#7
#6 #5 #4 #3 #2 #1 #0
1002
SFD DLZ JAX
JAX Number of axes controlled simultaneously in manual continuous
feed, manual rapid traverse and manual reference position return
0 :1 axis
1 :3 axes
DLZ Function for setting the reference position without dog (all axes)
0 :Disabled
1 :Enabled
NOTE PRM1002#1(DLZ) is used to make common settings for all axes.
This function can be specified for each axis by PRM1005#1(DLZx).
Manual reference position
return mode
Manual handle feed axis select
signals HS1A to HS1D
<QG0145 - +3>
Automatic operation start
signal ST
Cycle operation
Automatic operation sig-
nal OP
Reference position return end
signals ZP1 to ZP8 <
IF0753+
>
Torque limit
Axis feedrate
Torque limit reach signals for
butt–type reference position
setting CLRCH1 to CLRCH8
<
IF1441+
>
N%: Torque limit (%) specified with PRM7186 (%)
100%
N%
Butting direction
100%
Withdrawal
direction
16.6.4 Related parameters