Insys Modem 56k 4.1 11-02-01-01-40.028 Manuale Utente

Codici prodotto
11-02-01-01-40.028
Pagina di 100
INSYS Modem 336/56k 4.1 (UL) 
Functions 
5.2.4  Hardware Data Flow Control with RTS/CTS 
Hardware Data Flow Control with the Modem (CTS). 
 
Modem 
 
RS232 Cable 
 
CTS Line 
Application 
(E.g.: PC or con-
trol) 
When the input buffer of the modem exceeds a certain fill state, 
the modem will set the CTS line to OFF. This indicates to the ap-
plication not to send any data. 
After the modem has operated the input buffer so far that the 
XON buffer falls below a certain fill state, it switches the CTS line 
back ON and reports to the application that it is ready to receive 
data again.  
 
5.2.5  Hardware data flow control with the application (RTS) 
 
Modem
 
RS232 Cable 
 
RTS Line 
Application 
(E.g.: PC or con-
trol) 
AT&K3
AT&R1
 
The application sets the RTS line to OFF to request from the mo-
dem to interrupt the data transmission. 
AT&K
AT&R
 
It will depend on the according application software if the RTS/CTS 
lines can be operated. 
The application sets the RTS line to ON to request data from the 
modem. 
 
Configuration with HSComm (settings according to the require-
ments): 
 
July 06 
21