Cypress Chameleon CTM-15X Manual do Utilizador descarregar pdf (Página 7)

7 State Diagrams for PAD operation modes

Send the escape sequence to the serial port (the default escape sequence is +++) – note that no “Enter” is

required as part of the escape sequence. The modem will drop into command mode. The escape

sequence may be changed using the command cmd padesc <string>. Note the PAD escape guard timer is

set using the cmd padesct n command.

When the modem has been previously configured for PAD client mode - one session (cmd padmode 2 or

cmd padmode 3), using the command cmd padreset will cause the PAD connection to drop and the

modem will go into the serial console.

The cmd padsvct server connection timer will expire after a period of inactivity equal to its setting

(default 15 seconds). When the modem has been configured with cmd padmode 0/1 and cmd padip

using a valid IP address, and is in client mode for the first time, once this timer expires the modem will go

into server mode. The cmd padsvct maximum connection timer will expire after a period equal to its

setting, regardless of the PAD data connection condition (default 0 seconds, meaning disabled).

On TCP PAD connections if the server end drops the connection then a modem configured with cmd

mode 4 (auto connect to network and PAD) and cmd padmode 5 (auto connect TCP PAD client) will

attempt to reconnect the TCP session.

4 State Diagrams for PAD operation modes

The following section provides the state diagrams that describe PAD operation for each of its modes:

• PAD server mode: cmd padmode 0 (UDP), cmd padmode 1 (TCP)

• PAD client, single-session mode: cmd padmode 2 (UDP), cmd padmode 3 (TCP)

• PAD client, persistent mode: cmd padmode 4 (UDP), cmd padmode 5 (TCP)

In the state diagrams below, the circles indicate the current state of PAD and the arrows exiting the

circles indicate events which cause PAD to change its state.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Sem comentários

Cypress Chameleon CTM-15X Manual do Utilizador Página 7