Mitsubishi A1SD75M3 User Manual page 354

8 ZERO POINT RETURN CONTROL
Positioning start [Y10,Y11,Y12]
signal
[X4,X5,X6]
BUSY signal
Start complete signal
Md.35 Axis operation status
Position command
Positioning operation
Fig. 8.13 Operation timing and processing time of high-speed zero point returns
Operation timing and processing time of high-speed zero point returns
The following shows details about the operation timing and time during high-speed
zero point returns
t1
[X1,X2,X3]
Standing by In position control
t2
Normal timing time
t1
5 to 15
•
The t1 timing time could be delayed by the following factors.
1) Presence of FROM/TO command execution during start process
2) Operation state of other axes
3) Presence of intervention from peripheral device during start process
4) Details of positioning data to be started
Operating restrictions
(1) When the zero point return complete flag ( Md.40 Status: b3) is ON, executing
a high-speed zero point return start will result in an error "zero point return
request ON" (error code: 207)".
(2) When the absolute position restoration mode is the "infinite length mode", an
error "outside start number range" (error code: 543) occurs at a high-speed
zero point return start.
t3
Standing by
Unit: ms
t2 t3
0 to 3.5
8 - 20
MELSEC-A