Metrohm 768 KF Oven - Manuel (Page 35)

3.3 Characteristics of the RS232 interface3.3 Characteristics of the RS232 interface
768 KF Oven
32
KF Oven as sender:
max. 4
Data input
Data output
TxD
RxD
Data output disabled
XOFF XON
Data output enabled
LF
characters
External device KF Oven
Time
3.3.2.2 Software Handshake, SWline
Handshake inputs at the KF Oven (CTS, DSR, DCD) are not checked.
Handshake outputs (DTR, RTS) are set by the Oven.
The Oven is equipped with an input buffer that can accommodate a string of up to 80
characters + CR LF. As soon as an LF is recognized, the Oven sends XOFF. After this, it
can receive maximum 6 extra characters and store them. The string sent previously is now
processed by the Oven. Afterwards, the Oven sends XON and is again ready to receive.
KF Oven as receiver:
LF
Input KF Oven disabled
TxD
RxD
Data output
Data input
XON
String is
Time
400 us
XOFF
External device KF Oven
LF
processed