4LIST OF COMMANDS:
4.1Command Mode
The modem is configurable through the RS232 port. The Command Mode has to be activated to do this, as detailed in the following paragraphs:
4.1.1Activation of the Command Mode:
The Command Mode is activated with the string: <wait>+++<wait> <CR><LF>
Where <wait> is a programmable period after transmitting data (which is set by register S154) which has a nominal value of 10ms.
The modem responds with:
OK<CR><LF>
The modem is now ready to be configured. Transmitting or reception is blocked during Command Mode.
If the "+++" string is input without a <CR><LF> then the string is transmitted as normal data. Note that one or more consecutive “+” characters in the input data are held in the modem until it is determined that it is not a “+++” string.
The configuration mode is only accepted if the RTS line is set. The “+++” string is only accepted if this string is the first three characters and there has been no data for greater than the time set by register S154.
The +++ string is only transmitted over the air if embedded in a data string as described above.
Important: any configuration changes made are only saved to the
Note that the communication parameters (baudrate etc) are the programmed parameters.
Hermes Operator Note | Page 10 of 32 |
