7 Communication Using MC Protocol
87
FX3U-ENET-ADP User's Manual
1
Introduction
2
Specification
3
System
Configuration
4
Installation
5
Wiring
6
Introduction of
Functions
7
Communication
Using
MC Protocol
8
The Operation
of GX Works2
9
Troubleshooting
A
List of Special
Devices
7.7 Loopback Test
2) Performing a loopback test while communicating in ASCII code
Caution
The loopback data transmitted by an external device is returned to the external device as is.
31
H
36
H
46
H
46
H
30
H
30
H
30
H
41
H
6
H
F
L
F1
H
0 0
L
A0
LHLHLHLH
39
H
36
H
30
H
30
H
6
H
0
L
09
LHLHLHLH
(Data name)
External device
side
(Example)
(Data name)
(Example)
PLC side
Subheader
PC No.
Monitoring
timer
Complete code
Subheader
Data length
(1 to 254 bytes)
Head send data
Second send data
Last send data
Data length
(1 to 254 bytes)
Head send data
Second send data
Last send data
(Designated byte length 2)+10bytes
(Designated byte length 2)+6bytes
*
*
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