User's Manual

Appendix A Hayes AT Commands
Man_455U-D Rev 3.01 Page 69
C16 Set 187,500 baud (For Profibus)
ATD Connection/Dialing Control. Dial a specific remote or a stored number. This
command has a different effect depending on whether it is issued from the RS-
232 main serial port (connects to the remote modem’s serial ports) or from the
Diagnostic serial port (Connects to the remote modems diagnostic functions).
ATE Local Echo Control. Enable/Disable Command Echo. (Only applies to DB9 port
RJ-45 port always has Echo enabled)
E0 Disable Local Echo on DB9 serial port
E1•
Enable Local Echo on DB9 serial port
ATF Set Radio Frequency
FT xxx.xxxx Set Transmit Frequency xxx.xxxx MHz – Returns ERROR if
outside radio range.
FR xxx.xxxx Set Receive Frequency xxx.xxxx MHz – Returns ERROR if
outside radio range.
ATH Hang up/Hook control. End a call, or disable incoming calls.
ATI Modem Identity / Firmware version
I0•
Return Modem Firmware Version - EG “ELPRO E455U V2.3”
I5•
Return Full Information on modem, including serial numbers and hardware
version
ATO Go to on-line (When connection established)
ATQ Quiet mode (Suppress/enable response codes) RJ-45 port always has quiet mode
disabled
Q0•
Enable response codes on DB9 serial port
Q1 Disable response codes on DB9 serial port
ATR RS-485 Serial Baud Rate selection.
R1 Set 600 baud
R2 Set 1200 baud
R3 Set 2400 baud
R4 Set 4800 baud
R5•
Set 9600 baud
R6 Set 14,400 baud
R7 Set 19,200 baud
R8 Set 28,800 baud
R9 Set 31,250 baud
R10 Set 38,400 baud