Mitsubishi Electric MELSEC-Q QD75M User Manual page 256

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
D
25
H 75
C M
P 4
U
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 QD75
There are two methods for communication with QD75 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 QD75.
When using the FROM/TO command for communication with QD75, 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