Checking At Command Setting - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Remote Maintenance
8.6.2

Checking AT command setting

The AT command is required when "user registration mode", "PP modem mode (ch 1)" or "PP modem mode
(ch 2)" is selected in the modem initialization setting. When such a mode is set, check the following contents.
1. Checking data registers
The head device number and device range of data registers used for setting the AT command vary
depending on the FX Series.
Check the data register numbers in which the AT command is set.
FX , FX , FX
1N 1NC
and FX
FX
1S 3S
Use consecutive data registers from the head device number. If a numeric value is not set in a data register,
the data registers after it are not transferred.
2. Checking the contents of the AT command
If the contents of the AT command are not correct, remote maintenance cannot be used.
Verify that the setting contents are correct.
As reference, the table below shows the set items and their contents of the AT commands already registered
in PLCs.
Set item
Command echo
Number of times of calling in
automatic receiving
Result code display
DTR control
Communication mode
Terminal flow control method
Send data flow control
Terminal speed fixing mode
Writing to nonvolatile memory
3. Checking "CR (H0D)" and "LF (H0A)"
Make sure to input "CR (H0D)" and "LF (H0A)" at the end of the AT command. If they are not input, the AT
command cannot be transferred.
I-56
PLC
, FX , FX , FX , FX
2N 2NC 3G 3GC
PLC
ATE0S0 = 2Q1&D0&M5\Q0\J0&W
Device range
and FX PLC D1000 to D1059
3U 3UC
D200 to D255
PV-AF288 (AIWA)
E0 (not provided)
S0 = 2 (twice)
Q1 (not provided)
&D (normally ON)
&M5 (V. 42 bis)
\Q0 (not provided)
—
\J0 (fixed)
&W
For the AT command setting for the PLC, refer to Chapter 5.
8 Troubleshooting
8.6 Checking Setting in PLC
ME3314B (OMRON)
ATE0S0 = 2Q1&D0&H0&R1S15=8&W
E0 (not provided)
S0 = 2 (twice)
Q1 (not provided)
&D (normally ON)
S15 = 8 (V. 42 bis)
&R1 (not provided)
&H0 (not provided)
—
&W