Mitsubishi Electric GT14, User Manual

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62 - 56
62. MICROCOMPUTER CONNECTION (ETHERNET)
62.4 Message Formats
62.4.7 Formats 8, 9 (3E frame)

Basic format of data communication
This is the same message format as when communication is performed using the MC protocol (3E frame) of the Q/
QnA Series serial communication module.
For details of the basic format of data communication, refer to the following manual:
MELSEC-Q/L MELSEC Communication Protocol Reference Manual
This section describes items whose settings differ from the MC protocol of the Q/QnA Series serial communication
module, and the dedicated commands for a GOT microcomputer connection.
Example: Request message for the batch read in word units (0401) command
Device name: D, Start device: 100, Number of device points: 2
Communication settings of the GOT side: Network No.=1, PLC No.=1
• Format 8 (3E frame (ASCII))
• Format 9 (3E frame (Binary))
(H) (L)
PLC No.
0
30
H
(H) (L)
Network
No.
0
30
H
(H)
Request destination
module I/O No.
0
30
H
0
30
H
– (L)
0
30
H
0
30
H
(H) (L)
Request
destination
module station No.
0
30
H
0
30
H
Following *1
(H) –
Command
0
30
H
4
34
H
– (L)
0
30
H
1
31
H
*1
(H) (L)
Device
code
*
2A
H
D
44
H
(H)
Start Device
1
31
H
– –
0
30
H
–
0
30
H
(L)
0
30
H
–
0
30
H
0
30
H
Character A section
(H) –
Sub-command
0
30
H
0
30
H
(L)
0
30
H
0
30
H
– (H) –
Device points
0
30
H
0
30
H
– (L)
0
30
H
2
32
H
(H) (L)
5
35
H
0
30
H
(H) (L)
Subheader
0
30
H
0
30
H
1 1
31
H
31
H
(H) (L)
0
30
H
0
30
H
(H) (L)
Request data length
1
31
H
8
38
H
(H) (L)
0
30
H
0
30
H
(H) (L)
CPU monitoring timer
0
30
H
0
30
H
Data length target data
–
00
H
00
H
00
H
00
H
0
CH
50
H
00
H
Subheader
PLC
No.
Network
No.
Request
destination
module I/O No.
Request
data length
CPU
monitoring timer
Request
destination
module
station No.
00
H
00
H
01
H
01
H
Sub-
command
00
H
00
H
64
H
Start Device
Device
code
Device points
00
H
02
H
A8
H
Command
01
H
04
H
00
H
00
H
Data length target data