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6 PLC PROGRAM USED FOR POSITIONING CONTROL
0
0
(4) System configuration
Unless particularly designated, the PLC program for the following system is
shown in this chapter and subsequent.
Refer to Section 6.2 for the application of the devices to be used.
Q
Q
25
D
H
75
C
M
P
H
U
4
00
to
1F
Servo
amplifier
M
(5) Control unit
In the program, the unit of "0 (mm), 2 (degree)" is set for the basic parameter 1.
(6) Communication with QD75MH
There are two methods for communication with QD75MH using the PLC
program: a method using an "intelligent function device" and a method using a
FROM/TO command.
In the PLC program in this chapter and subsequent, the program example using
the "intelligent function device" is shown without using an FROM/TO command
for communication with QD75MH.
When using the FROM/TO command for communication with QD75MH, change
the circuit incorporating the "intelligent function device" as follows.
(a) When the circuit uses the "intelligent function device" on the destination (D)
side of a MOV command, change the command to a TO command.
X21
X21
Q
Q
X
X
41
40
X20
X40
to
to
X3F
X4F
X40 to X4F
X20 to X3F
Servomotor
TOP
6 - 3
Q35B
Extenal
devices
Intelligent function device
MOVP
K1
H0
K1505
K1
Designated
Designated
value
value
write data (1)
at U0
at G1505
MELSEC-Q
U0\
G1505
K1
Number of
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