2.
SYSTEM
CONFIGURATIONS
MELSEC-A
2.2
Applicable Systems
The AJ71C24 can only be used
in
the systems described below.
(1) Applicable PC CPU modules and the number of AJ71C24 modules
The table below shows the PC CPU modules to which the AJ71C24 is
applicable and the number
of
AJ71C24 modules which can be con-
nected to the PC CPU modules.
The
PC
CPU modules listed below include those which have the
MEL-
SECNET link function.
(e.g., AlCPU includes A1 CPUP21/R21 to which an AJ7lC24 can be
connected.)
PC CPU Modules
AW2H
Al, AIN
A1
S
AS, A3N
A3H, A3M
A73
A2(-S1), A2N(-S1)
A2A(-S1)
A3A
Number
of
Connectable
AJ71
C24s
Notes
If the following modules are used with the
AJ71C24, the maximum number
of
connec-
table AJ7lC24 modules cannot exceed 2 or
6.
(See previous column).
0
AD51 (S3)/AD51 H Intelligent Communica-
2
tion Module
0
AD570 Graphic controller Module
AJ71C21 (Sl) Terminal Interface Module
0
AJ71C22(Sl) Mukidlop Link System
Module
6
0
AJ71C23 Higher Controller High Speed
Link Module
0
AJ71C24(S3/S6) Computer Link Module
0
AJ71 E71 Ethernet Interface Module
(AOJOCPU and A2CCPU are not applicable.)
(2) Applicable base
unit
The AJ71C24 can be inserted into any slot of a main base
unit
or
extension base unit with these two exceptions:
(a) The power supply capacity may be insufficient to load the AJ71 C24
into an extension base unit
with
no built-in power supply (A55B or
A58B). Wherever possible, avoid loading an AJ71 C24 module into
this type of extension base unit. If
it
is necessary to use an AJ71 C24
module in an extension base unit with no built-in power supply,
it
is
important to consider (a) the power supply capacity of the main
base unit, and (b) the voltage drop along the extension cables when
selecting the extension cables.
(b) (The User's Manual of the respective CPU module employed gives
details.)
2-2
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