8.
COMMUNICATIONS USING DEDICATED PROTOCOLS
8.15
Loopback Test
(1)
ACPU
common command
Command
8tah
d
PC CPU
NumW
of
PdnW
Itom
Sw-
ASCII
Processing
During RUN
Prom8ood
per
bo1
Code
Communiea-
During
tlon
sw2s sw22
STOP
ON
OFF
Loopbeck
tcwt
Echoes back the character6 to the
54H,
54H
computer
8s
thoy
aro
recoived
254chaMCtera
00
0
(2)
Designating the loopback test
Derianatlon Method
I
Designation in protocol
1
is
shown below.
Loopback test command
\
Character area
A
Character area
B
POINT/
To
set the characer length, the following condition must be met:
0
1
s
character length
I
254
Derlgnation Example
I
To
execute the loopback test with the
"ABCDE"
at station number
"0".
(Message wait time
is
0
msec.)
1
I
ri
LI
d
Y
4
i
8-112
3
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