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Page 32
Command Descriptions (long)
Commands in this section are listed alphabetically. Command categories are designated between
the "< >" symbols that follow each command title. By default, 232-485 RF Modems expect
numerical values in hexadecimal since the default value of the CF (Number Base) Parameter is
'1'. Hexadecimal values are designated by the "0x" prefix and decimal values by the "d" suffix.
%V (Board Voltage) Command
<Diagnostics> %V Command is used to read the
current voltage of the RS232-485 Module circuit
board.
Sample Output: 5.02 V
* When CF = 1 (default), a hex integer is shown that is equal to (voltage * 65536d).
AM (Auto-set MY) Command
<Networking & Security> AM Command is used
to automatically set the MY (Source Address)
parameter from the factory-set modem serial
number. The address is formed with bits 29, 28
and 13-0 of the serial number (in that order). The value is displayed as a result of this command.
AT (Guard Time After) Command
<Command Mode Options> AT Command is used
to set/read the time-of-silence that follows the
command sequence character (CC Command). By
default, 1 second must elapse before and after
the command sequence character.
The default sequence used to enter AT Command
Mode is as follows:
All of the values in this sequence can be adjusted. AT Command is used to adjust the period of
silence that follows the command sequence character.
(when ATCF = 0)
5051F
(when ATCF = 1) *
5.02
(when ATCF = 2)
•
No characters sent for 1 second [BT
(Guard Time Before) Command]
•
Send three plus characters "+++" [CC (Command Sequence Character) Command]
•
No characters sent for 1 second [AT (Guard Time After) Command]
RS‐232/485 RF Modem Product Manual – MAN0782‐02
AT Command: AT%V
Binary Command: 0x3B (59 decimal)
Parameter Range (read-only):
Number of bytes returned: 2
AT Command: ATAM
Binary Command: 0x40 (64 decimal)
Parameter Range: 0 – 0xFFFF
AT Command: ATAT
Binary Command: 0x05 (5 decimal)
Parameter Range: 2 – (ATST-3), up to 0x7FFC
Default Parameter Value: 0x0A (10 decimal)
Number of bytes returned: 2
Related Commands: BT (Guard Time Before),
CC (Command Sequence Character)
0x2CCCA – 0x5BFFA
(2.80 – 5.75 decimal)
[x 100 milliseconds]
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