From OpenSCADAWiki
Using the additional dialog you can set:
- Time intervals of the interface in the format of string "{symbol}:{frm}[::{rtsDelay1}:{rtsDelay2}]", where:
- symbol — character time in milliseconds, used to control of the frame end;
- frm — maximum time of the frame in milliseconds, used to limit the package maximum size of the request — the frame;
- rtsDelay1 — delay between the transmitter activation with RTS signal and start up of the transmission, in milliseconds;
- rtsDelay2 — delay between the transmitting and disconnecting the transmitter with RTS signal, in milliseconds.
- Priority of the input stream task.
- [MODEM] Modem parameters. This mode is activated by the fifth parameter of the address and includes call waiting from the remote modem (the request "RING"), answering the call (the command "ATA") and the subsequent transfer of requests from the remote station to the transport protocol. The disconnection of the communication session is performed by the connection initiator and leads to the reconnection of the receiver modem to wait for new calls.
- Requests timeout of the modem, in seconds.
- Time delay before initializing the modem, in seconds.
- Time delay after initializing the modem, in seconds.
- First initialization string (typically contains the reset command of the modem "ATZ").
- Second initialization string.
- Result string of the modem's initialization (usually "OK"), with which the modem answers for initializing and which must be expected.
- Call's request (usually "RING"), which is sent by the modem in the case of an output call.
- Answer to the call (usually "ATA"), which is sent to the modem to answer the call.
- Result line for the answer to the call (usually "CONNECT"), with which the modem answers to the answer command, and that is to be expected.
- Protocols' specific custom parameters.
- Reset all the additional parameters to default values and cleanup the protocols' specific custom parameters.