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APPENDICES
I.
,.I
MELSEGA
APPENDIX
2.
Precautions Concerning Compatlbll and the
Use
of
Existing
Programs Prepared for the
A171C2
33
Computer Unk
Module
The following sections describe precautions which should be taken when
using the AJ71C2448 computer link module. These precautions cover
compatibility with the AJ71C24-S3 computer link module (hereafter called
the AJ71 C24-S3), the use of existing programs prepared for the AJ71 C24-
S3,
and procedures for changing, adding, and installing modules to the
existing network.
21
Compatibility
The AJ71C2448 and the AJ71C24-S3 have the same dimensions and can
be installed in the same way. They also use the same basic programs (PC
CPU programs and computer programs).
Compatibility is maintained within the functions supported by the AJ71C24S3.
22
Precautions When Using Existing Programs
(1) Communications time
The time required for communications with
a
PC CPU differs between
the AJ71C243 and the AJ71C2448. The User’s Manual for each type
of module gives details.
(2) PC CPU model name read function (command: PC)
When reading the PC model name of the PC CPU using the PC com-
mand, the model name codes for the A2ACPU(-Sl), AWCPU, etc. are
changed.
CPU
Yodel
Name
An1
c24-sa
AJ71
C24-83
AOJPHCPU
93H A4H A2ACPU-Sl
92H
A4H
A2ACPU
98H A2H
L
LI
ASACPU
QAH
A2H A2CCPU
98H
A2H
A1 SCPU
94H A4H
c
A1 SCPU
98H
A2H
A2CCPU A2H 9AH
I
APP-4
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