P
.
'-
P
P
L
L-
8.
COMMUNICATIONS USlMQ
D6D'WR
.PRQxOCOLS
MEtSEC-A
8.13
Global Functlon
The global function is used to switch the Xn2
input
signal
at
each
AJ71 C24 in all stations connected to the computer by the multidrop
link.
This function is used for emergency instructions simultaneous start,
etc., to the
PC
CPU.
8.1 3.1
Corn-
and
control
(1)
ACPU common commands
Command
st.-
ot
PC CPU
Aom
Promulng
ASCII
During
RUN
During
STOP
sw22
sw22
ON
OFF
Symbol
akb.l
Turns
ONlOFF
Xn2
of
the
AJ71C24
loaded
in
each
PC
47y
57H
Gw
CPU
ryrtem.
0
0
0
Note
:
o
........
Executable
(2) Control
-4-4
c
-.
m
L-
P
F
P
This function switches the Xn2 input signal at each AJ71C24 in all
stations linked to the computer.
(a) Xn2 is determined by the
I/O
addresses
of
the AJ71C24s.
Example:
If
the
I/O
addresses are 90 to
AF,
Xn2 is X92.
(b) Designate the station number
in
the control protocol as FFH.
Designating a number other than FFH causes the Xn2
of
the
AJ71C24 at the designated station number to turn ON/OFF.
(c) This function is a command from the computer.
A
reply
is
not given
by the AJ71 C24.
(d) When
the
power supply to a
PC
CPU is turned OFF, the PC
CPU
is
reset, or the mode of the AJ71C24 is switched, the Xn2 signal at all
stations is turned OFF and
the
global function processing request
is cleared.
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