9 - 4 9 - 4
MELSEC-F
9 WHEN COMMUNICATING DATA USING THE MC PROTOCOL
(2) Control procedure
The following diagrams illustrate the control procedure for communicating with
the MC protocol and the order of data items in the application data field.
The header section shown in the message explanation diagram of this section
corresponds to the portion of the message explanation diagrams indicated in
Section 9.3.2 and later.
See Section 9.1.3 regarding the content of data items in the message format and
data specification method.
(a) Communication in ASCII code
1) When reading data from the local station PLC at the external device
side
External device side
PLC side (Command message)
(Data name)
(Example)
Header
O
O
F
F
-
A
Subheader
PC No
.
Monitor
ing
timer
Character area A
The contents and arrangement of the data items in
the text differs according to the function to use.
See the sections explaining functions found in
Section 9.3.2 and after for details
PLC side
Text (Command)
External device side (Response message)
(Normal completion)
Text (Response)
Header
Subheader
Complete code
Character area B
(Abnormal completion)
Text (Response)
Header
Subheader
Complete code
Abnor
mal code
When complete code
5BH is returned
30
H
38
H
8
0
H
L
0
0
Exists only when the complete code is "5B."
38
H
8
0
H
L
5
B
H
L
1
2
0
0
30
H
H
L
H
L
O
O
O
30
H
30
H
30
H
46
H
46
H
41
H
30
H
30
H
30
H
30
H
30
H
30
H
35
H
42
H
31
H
32
H
-
Содержание FX3U-ENET
Страница 1: ...USER S MANUAL FX3U ENET ...
Страница 2: ......
Страница 159: ...8 6 8 6 MELSEC F 8 COMMUNICATION USING MC PROTOCOL MEMO ...
Страница 295: ...App 25 App 25 MELSEC F APPENDIX MEMO ...
Страница 297: ......