APPENDICES
--------------------
MELSEC·A
4.2 A6PHP
The system disk
for
use with the A2C is SW4GP-GPPA.
If
the
SW3GP-GPPA system disk is used
for
booting, follow
the
instructions t
described below.
(1) CPU type
On the A6PHP booted with the SW3GP-GPPA disk, set
the
CPU type as
"A2'.
(2) Program capacity
The
A2C
has
8K
steps
of
capacity
for
sequence
programs
and
microcomputer programs.
By parameter setting, program capacity less than 8K steps should be
.ill
set.
'III
(3) Number of I/O points
The A2C has 512 input and output points from
X/YO
to X/y1FF.
(4) Interrupt programs and interrupt counters are unusable.
On
the
A2C, interrupt programs (I to IRET)
cannot
be executed. Do not
set interrupt counters
using
parameters. Counters set
for
interrupt t
counters cannot execute count processing with main routine programs
and
subroutine programs.
(5) Unusable devices
Since the A2C does
not
execute interrupt programs, I (interrupt pointer)
is
not
usable.
(6) Unusable instructions
The following instructions are not usable on
the
A2C.
(a) PR (ASCII print instruction)
(b)
EI/D1
(Interrupt program allow/disallow)
(c) IRET (Interrupt program return)
•
(7) Remote terminal setting
Remote terminal setting of
the
A2C is executed with the initial program
of
the
sequence program. (See Section 4.2.9
for
details of the initial
program.)
APP-22
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