4. REFERENCE POSITION ESTABLISHMENT
B-64693EN-1/01
- 802 -
NOTE
3 When this parameter is set, machine position and position on
absolute position detector become uncorresponding. So, establish
the reference position again. (Consequently, the bit 4 (APZ) of
parameter No. 1815 (indicating that the correspondence is
established) is set to 0, and an alarm DS0300, “APC ALARM:
NEED REF RETURN”, occurs. Why the bit 4 (APZ) of parameter
No. 1815 is set to 0 can be checked using diagnosis data No.
0310#0).
1860
Value 1 for the zero point of the absolute position detector
1861
Value 2 for the zero point of the absolute position detector
1862
Value 3 for the zero point of the absolute position detector
NOTE
When this parameter is set, the power must be turned off before
operation is continued.
[Input type] Locked parameter
[Data type] 2-word axis
Parameters Nos.1860 to 1862 are values for the zero point of the absolute position
detector (association with reference position and the counter value of the absolute
position detector).
The CNC automatically sets parameters Nos.1860 to 1862 when correspondence between
the reference position and the absolute position detector is performed.
It is not available to set parameters Nos.1860 to 1862 by using inputting of MDI
operation, FOCAS2, PMC window or programmable parameter input(G10).
The zero point data of the absolute position detection can be restored and parameters
Nos.1860 to 1862 can be set, by the parameter input from connected I/O unit or by
restoring the SRAM area of boot system.
When the zero point data of the absolute position detection are restored, be careful about
the following.
-
When the zero point data of absolute position detection are restored, back up them
right before the restoring and use backup data.
-
When the motor or the detector is exchanged, the zero point data of absolute
position detection cannot be restored. After exchange, set the zero point of the
absolute position detector again.
-
When the zero point data of the absolute position detection are restored by them of
the other machine, the zero point of the absolute position detector is set to wrong
position. Don't restore the zero point data of absolute position detection by them of
the other machine.
-
When the zero point data of absolute position detection are backed up with reference
position not established and restored by backup data, setting of the zero point of the
absolute position detector is required after restoring.
WARNING
If the zero point of the absolute position detector is not set properly,
the machine coordinate system is not established correctly.