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PSI-DATA/BASIC-MODEM/RS232
6-14
PHOENIX CONTACT 102906_01_en
S9 Waiting Time for Detecting the Carrier Detect Signal
Register S9 specifies how long the carrier detect signal from the dialed modem must be
present so that your modem can detect it. This function ensures that your modem does not
incorrectly interpret other signals such as the engaged tone, telephone ringing or voice
paging as a carrier detect signal.
This register value is specified in units of one tenth of a second.
Default: 600 ms
(Any value between 1 and 255 can be used. If, for example, you specify the value 13, your
modem must receive the carrier detect signal from the dialed modem for 1.3 seconds
before responding.)
The higher the value, the less likely the modem is to incorrectly identify carrier detect
signals.
S10 Waiting Time for Losing the Carrier Detect Signal
Register S10 specifies how long your modem should wait after losing the carrier detect
signal from the dialed modem before it aborts the connection. This function can be used to
prevent your modem from aborting the connection if the selected carrier detect signal only
briefly disappears from the line.
This register is set in units of one tenth of a second.
Default: 1400 ms
(The entire valid range is between 1 and 200.)
Select a higher value if the connection is poor and the dialed carrier detect signal is
disturbed by other noises.
Set the value to 255 if your modem should ignore the carrier detect status and assume that
the carrier detect signal from the dialed modem is continuously present (not possible in
certain countries).
S11 Dialing Speed (Dial Tone Duration) for Tone Dialing
Register S11 controls the speed of tone frequency dialing (DTMF).
Default: 85 ms
If the value of this register is less than the value of register S9, your modem interrupts
the connection as soon as the carrier detect signal briefly disappears.
In this case register S10 elapses before the waiting time allocated for detecting the
carrier detect signal elapses.
Register S11 has no effect on pulse dialing.