Helios FM 20/100 W, user manual– 12/2011
Page 48
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www.ecreso.com – [email protected]
6. SERIAL COMMANDS
6.1.
Working principle
Helios FM 20100 W has a serial interface. The physical connection is done using the SUB-D9 (SERIAL
MONITOR) on the front panel. A common computer with an RS 232 interface (example: PC+ W
Hyper-Terminal) is all you need to send commands. The dialog is in text mode (ASCII) and no specific
software is required.
Like all serial PC connected equipment, a good cable and correct communication settings are essential to
ensure good communication. The cable must be a straight cable (not crossover), with a female plug to
connect to the PC, and male plug to connect to the unit.
To avoid problems during connection, set the same communication speed and identical settings for both
devices. See figure ‘Port parameters”.
-> 9600
bits per second
-> 8
data bits
-> No Parity
-> 1
Stop bit
-> No Handshaking
The commands make it possible to read the functional parameters (R) or even to edit some of them (W).
To retrieve the value of a functional parameter, simply enter the command name and press the <Enter> key.
Example:
To display the status of the 3 dB alarm, type:
ALARM.3DB
The answer,
ON
or
OFF
will indicate the 3 dB alarm is on or not.
To set a parameter, type the command name, the equal sign, the new value and press the <Enter> key.
Example:
To set the transmitter working mode (local or remote), type:
CONF.MODE=LOCAL
The answer:
LOCAL
will indicate the command has been implemented. In case it has not, the message
ERROR CMD
will appear.
