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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 AJ71 C24 modules
4
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 t o the PC CPU modules.
The PC CPU modules listed below include those which have the MEL-
SECNET link function.
(e.g., AlCPU includes AlCPUP21lR21 to which an AJ71C24 can be
connected.)
Number of
PC CPU Modules
Connectable
AJ71 C24s
Notes
If the 101 ownng
modules arc ~ s e d
w t n
the
A ~ 7 1 C 2 4 , the maxnrnum numbcr of conncc-
table AJ71C24 moaL
cs
cannot exceed 2 or
6.
(See previous column)
A051(S3) Intelligent Communication
Module
AJ71C21 (Sl) Terminal Interface Module
AJ71C22(Sl) Multidrop Link System
Module
AJ71C23 Higher Controller High Speed
Link Module
AJ71C24(S3) Computer Link Module
AJ71E71 Ethernet Interface Module
(AOJ2CPU and A2CCPU are not applicable.)
(2) Applicable base unit
The AJ71C24 can b e 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 t o 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
4
details.)
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