Mitsubishi FX3U-232-BD User Manual page 635

FX Series PLC User's Manual - Data Communication Edition
Remote Maintenance
1. AT command structure
For initializing a modem, use the AT command developed by Hayes.
The Hayes AT command is generally expressed in the following format:
A T Command + Parameter Command + Parameter
For details on the AT command, refer to the manual of the modem to be used.
2. Input example of the AT command for initialization, Example: ATE0S0 = 2Q1&D0&M4\Q0\J0&W
Data register No.
D1000
D1001
D1002
D1003
D1004
D1005
D1006
D1007
D1008
D1009
D1010
D1011
D1012
5
Inputting "CR" and "LF"
It is necessary to input "CR" and "LF" at the end of the AT command.
Input "000D" and "000A" (hexadecimal values) to data registers respectively.
If "CR (0DH)" and "LF (0AH)" are not input at the end of the AT command, remote maintenance is
not possible.
1 2
Hexadecimal
ASCII code
value
A 41
T 54
E 45
0 30
S 53
0 30
= 3D
2 32
Q 51
1 31
& 26
D 44
0 30
5 How to Setup Modems on the PLC Side
Command + Parameter
...... n
Data register No. ASCII code
D1013
D1014
D1015
D1016
D1017
D1018
D1019
D1020
D1021
D1022
D1023
D1024
D1025
5.1 Setting Using GX Developer
CR LF
Hexadecimal
value
& 26
M 4D
4 34
\ 5C
Q 51
0 30
\ 5C
J 4A
0 30
& 26
W 57
CR 0D
LF 0A
I-25
A
B
C
D
E
F
G
H
I
Apx.