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MELSEC-
3 SPECIFICATIONS AND FUNCTIONS
3.5.4 Input/output interface internal circuit
The outline diagram of the internal circuit for the AD75 external device connection
interface is shown below.
Input/out-
put class
External wiring
Pin
No.
Internal circuit Signal name
Need for
wiring *1
11
Near-point dog signal DOG
12
Upper limit signal FLS
13
Lower limit signal RLS
14
Stop signal STOP
15
Speed/position
changeover signal
CHG
16
External start signal STRT
35
36
Common COM
(+)
9
PULSER A+
(–)
27
Manual pulse generator
A phase
PULSER A–
(+)
10
PULSER B+
(–)
28
Manual pulse generator
B phase
PULSER B–
7 Drive unit READY READY
8 In-position signal INPS
26 Common COM
6
24
Zero point signal PG0
Input
24VDC
When not using
upper limit switch
When not using
lower limit s
witch
5VDC
5V
0V
A
B
Manual pulse
generator
(MR-HDP01)
RD
INP
VDD
COM
LZ
LZR
For MR-J2- A
25
Common PG0 COM
*1: The meaning of “O” and “Δ” in the “need for wiring” column is as follows.
•
: Wiring is necessary in positioning.
•
: Perform wiring when necessary.
*2: The terminal connected to the common line may be either positive or negative.
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