Sollae Systems EZL-410, Руководство пользователя

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6.3. Extended AT Commands (Example: AT+PLIP etc.)
Command Function Description
+PLP listening TCP port
+PTO timeout
+PRIP Remote machine IP address
+PRP Remote machine TCP port
6.4. On-line State and Command State
It is Command State when TCP is being disconnected. AT commands can be used in
Command State. After TCP connection established, AT commands cannot be used. To use AT
commands during the connection, change state to Command State.
Command State
During TCP disconnected, AT commands can be used
To use AT commands during the connection, required escape
sequence
On-line State
During TCP connected, all serial data to EZL-410 convert TCP
and send to the network.
6.4.1. Changing On-line State to Command State
To change On-line State to Command State during the connection, +++ string should be
transmitted to EZL-410 as following sequence.
When transm++ string to EZL-410, +++ string will be sent to peer host.
The time from final data the first „+‟ data of
„+++‟ string
No data over 500ms(guard time)
time intervals between „+‟s 0~500ms
Time interval after receiving last „+‟ No data over 500ms (guard time)
6.4.2. Changing Command State to On-line State
If EZL-410‟s state is in Command State during TCP connection, EZL-410‟s state can be
changed into On-line State by an ATO command.