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4.
SElTlNGS AND PROCEDURES BEFORE OPERATION
MELSEC-A
(b) The computer and the AJ71C24 are connected through the RS-232C
and RS-422, and the AJ71C24 modules are connected through the
RS-422.
SW23
:
OFF
SW23
:
OFF
( S w z 4 : O F F )
( S W 2 4 : OFF)
7-1
7 - 1
Computer
(RS-232C)
1
station 2
1
1
AJ7IC24
I
(RS-232C)
I : I
I
I
Dedicated (Moder: 5. 6. 6 )
D. d i C , . d
(
Modes: A. B D
)
Dedicated (Modes:
5. 5 , 8)
Dedicated (Modes: 5,
6, 8)
Main : F d 2 2
(c) The computer and the AJ71C24 are connected through the RS-422.
Dedicated (Moder: 5. 6. 8)
Dedicated (Moder: 5. 6. 8)
station
n
AJ71C24
I
AJ7lC24
(RS-422)
(RS-422)
SDA
SOA
SDB
I
I
Dedicated (Modes: 5 . 6.
8 )
Dedicated (Modes: 5 . 6. 8)
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