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15. ABSOLUTE POSITION DETECTION SYSTEM
(3) Sequence program - 2-axis control
The following program is a reference example for creation of an ABS sequence program for the second
axis (Y axis) using a single A1SD75 module. Create a program for the third axis in a similar manner.
(a) Y-axis program
Refer to the X-axis ABS sequence program and create the Y-axis program.
Assign the X inputs, Y outputs, D registers, M contacts, T timers and C counters of the Y axis so
that they do not overlap those of the X axis.
The buffer memory addresses of the A1SD75 differ between the X and Y axes. The instructions
marked *1 in the program of Section 15.8.3 (2), (c) should be changed as indicated below for use
with the Y axis:
20)
X-axis ABS sequence program
(Program in Section 15.8.3 (2) (c))
Y-axis ABS sequence program
(Refer to the X-axis program and write the Y-axis
program)
[Program configuration]
[FROMP H0000 K5 D8 K1] [FROMP H0000 K155 D8 K1]
[DFROP H0000 K0072 D9 K1] [DFROP H0000 K222 D9 K1]
[DTOP H0000 K1154 D3 K1] [DTOP H0000 K1204 D3 K1]
[TO H0000 K1150 K9003 K1]
[TO H0000 K1200 K9003 K1]
(b) Data set type home position return
Arrange the data set type home position return programs given in Section 15.8.3 (2), (f) in series to
control two axes.
Refer to the X-axis data set type home position return program and create the Y-axis program.
Assign the X inputs, Y outputs, D registers, M contacts and T timers of the Y axis so that they do
not overlap those of the X axis.
The buffer memory addresses of the A1SD75 differ between the X and Y axes. The instructions
marked *1 in the program of Section 15.8.3 (2), (f) should be changed as indicated below for use
with the Y axis:
20
)
X-axis data set type home position return program
(Program in Section 15.8.3 (2) (f))
Y-axis data set type home position return program
(Refer to the X-axis program and write the Y-axis
program)
[Program configuration]
[DTOP H0000 K72 D9 K1]
[DTOP H0000 K1154 D9 K1] [DTOP H0000 K1204 D3 K1]
[TO H0000 K1150 K9003 K1] [TO H0000 K1200 K9003 K1]
[DTOP H0000 K222 D9 K1]