Insys Modem 56k 4.1 m/UL 11-02-01-01-40.022 Manuale Utente
Codici prodotto
11-02-01-01-40.022
INSYS Modem 56k UL
Configiration
Juni 05
9
4.2.1 PC Settings
Within HSComm the serial line setting are configured by the menu interface. The actual
settings are displayed in the status line of the program window.
settings are displayed in the status line of the program window.
Note: Serial setting has to be configured in any device (PC or PLC) connected to the INSYS
Modem.
Modem.
4.2.2 INSYS Modem Settings
Serial line settings of the INSYS Modem are accessed by the menu Configure
Æ
Modem.
Autobauding: the INSYS Modem recognizes baud rate and format of incoming data at
the first AT command. The last settings persist unchanged if the modem receives data
(e.g. when answering a call).
Handshake is controlling data flow in case one of the devices is not ready to receive more
data temporarily. Hardware handshake is realized by separate control lines within the
serial interface.
the first AT command. The last settings persist unchanged if the modem receives data
(e.g. when answering a call).
Handshake is controlling data flow in case one of the devices is not ready to receive more
data temporarily. Hardware handshake is realized by separate control lines within the
serial interface.
DTR handling
The signal Data Terminal Ready (DTR) of the serial line indicates that the device (PLC, PC)
is switched on, connected and ready. INSYS Modem can react if the device is switched off
or a cable is disconnected.
The signal Data Terminal Ready (DTR) of the serial line indicates that the device (PLC, PC)
is switched on, connected and ready. INSYS Modem can react if the device is switched off
or a cable is disconnected.
Echo
When Echo is set INSYS Modem transmits each command back on the serial line to the
sender. This is necessary to see the command input in terminal mode.
When Echo is set INSYS Modem transmits each command back on the serial line to the
sender. This is necessary to see the command input in terminal mode.
4.2.3 Idle Connection Control
Idle connection control (formerly data transmit control) is a firmware function to moni-
tor data transmission on the serial line in online mode. It avoids long time connection
without data transmission.
A counter starts as soon as the connection is established. Each byte which is transmitted
over the serial line resets the counter. The modem is reset when the predefined time is
reached without any data transmission or reception on the serial line. As the counter
starts at off hook idle time should not be set to less than 30 seconds to allow full connec-
tion establishment.
tor data transmission on the serial line in online mode. It avoids long time connection
without data transmission.
A counter starts as soon as the connection is established. Each byte which is transmitted
over the serial line resets the counter. The modem is reset when the predefined time is
reached without any data transmission or reception on the serial line. As the counter
starts at off hook idle time should not be set to less than 30 seconds to allow full connec-
tion establishment.