W&T 58620, Manual

Page: 43 / 89

43
W&T
Modem Operation
Subject to error and alteration
• NO CARRIER
The network connection to the desired communication
partner was able to be established, but the serial application
there did not pick up the call. The time for which the LAN-
Modem waits for the counterpart to pick up the call is stored
in Register S7 and is factory set to 50s.
• BUSY
No network connection to the desired communication
partner could be established. The cause of this may be a
station that is already busy with another connection. In this
case the attempt to establish a connection is rejected.
Another reason may be an unreachable or incorrect IP
address. For very slow network routs to the destination
system, the timeout stored in Register S6 for the TCP
connection set-up can be set to a higher value. The factory
setting is for 3s