
B-63943EN-1/02 6.INTERPOLATION FUNCTION
- 661 -
SC0 Actual speed command is 0 during spindle-spindle polygon
synchronization mode.
NOTE
Signal SC0 is not a value specified by the program.
It is set to 1 under any of the following conditions:
1. When the S command value is adjusted
according to the signals related to spindle
control, SSTP<G0029#6> and SOV0-
SOV7<G0030> and the signal related to
multi-spindle control <G0027>, the result is 0.
2. The S command value is smaller than the
spindle control resolution (the result of
multiplying the S command value by a value of
4095/(maximum spindle speed) is less than 1).
The S command value is specified by SIND
control <G0032, G0033>, and it is 0.
If SC0 = 1, the spindle speed becomes 0 and bit 0
of DGN No. 471 becomes 1. In this case, the
polygon synchronization rotation ratio is impractical,
but alarm PS5018 does not occurs, because it is
regarded as the result of the command.
If the following status is indicated during the polygon synchronization
mode, there are no abnormalities.
#7 #6 #5 #4 #3 #2 #1 #0
470 0 0 0 1 - 0 0 1
#7 #6 #5 #4 #3 #2 #1 #0
471 NPQ PQE QMS NSP SUO QCL SCU
Polygonal turning with two spindles
Indication of causes for alarms PS5018, PS0314, and PS0218
#0 to #3 Causes for alarm PS5018
Alarm PS5018 is cleared by a reset, but the indication of its causes
remains until the causes are cleared or the polygon synchronization
mode is released.
SCU The specified speed is too low during spindle-spindle polygon
synchronization mode.
(The unit of speed calculated internally becomes 0.)