Mitsubishi FX3U-232-BD User Manual

I-30
FX Series PLC User's Manual - Data Communication Edition
Remote Maintenance
5 How to Setup Modems on the PLC Side
5.3 Cautions on Use
4 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
disabled.
5.3 Cautions on Use
1. Cautions on inputting the AT command for initialization to the PLC
1) The AT command finishes sending when "0" (hexadecimal value) is read.
2) When creating a sequence program, make sure that the input area for the modem initialization command
is different from the data register area used by general sequence programs.
3) Make sure to input "CR (0DH)" and "LF (0AH)" at the end of the AT command. If they are not input,
remote maintenance is disabled.

Mitsubishi FX3U-232-BD Specifications

General

Type	Communication Module
Model	FX3U-232-BD
Category	Controller
Communication Protocol	RS-232
Communication Standard	EIA-232
Number of Channels	1
Maximum Transmission Distance	15 meters
Data Bits	7 or 8 bits
Stop Bits	1 or 2 bits
Parity	None, Even, Odd
Power Supply	5V DC (from PLC)
Current Consumption	50 mA
Compatible PLC Series	FX3U, FX3UC
Baud Rate	300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps