Mitsubishi Electric MELSEC Q Series Programming Manual page 394

6 POSITIONING CONTROL
(6) Indirect setting of home position return data
A part of home position return data can be executed the indirect setting by the
word devices of Motion CPU.
(a) Word devices for indirect setting
The word devices for indirect setting are the data registers (D), link registers
(W), Motion registers (#) and Multiple CPU area device (U \G).
Word devices except the above devices cannot be used.
The usable setting range of word devices are shown below. (For data that
uses2 words, set as an even number.)
Word devices
U \G
(Note-1): "p" indicates the user setting area points of the Multiple CPU high speed transmission
area for each CPU
(b) Input of home position return
In the indirect setting by the word devices, the specified word device data
are read at servo program execution by Motion CPU.
Set data to devices for indirect setting and then execute the start request
of servo program at home position return.
POINT
(1) Indirect setting of axis cannot be executed using word devices in the servo
program.
(2) Take an interlock with start accept flag (M2001 to M2032) not to change until
the device data specified for indirect setting.
If the device data is changed before starting accept, it may not execute the
home position return at the normal value.
(3) Refer to the Chapter 2 of "Q173D(S)CPU/Q172D(S)CPU Motion controller
Programming Manual (COMMON)" for the user setting area points of the
Multiple CPU high speed transmission area.
Setting range
D
W
#
10000 to (10000+p-1)
.
6 - 207
0 to 8191
0 to 1FFF
0 to 7999
(Note-1)