Metrohm 732 IC Detector - Manual (Page 186)

6.1 RS232 interfaces
732 IC Detector / 733 IC Separation Center
179
732 IC Detector as sender:
LF
DCD
CTS
TxD
DCD
CTS
TxD
DSR DSR
RTS RTS
DTR DTR
The data flow can be interrupted by deactivation of the CTS line.
Software handshake with character stop (SWchar)
Handshake inputs (CTS, DSR, DCD) are not checked at the 732 IC
Detector, handshake outputs (DTR, RTS) are set.
As soon as an L
F
is recognized, the 732 IC Detector sends XOFF. After
this time, it can still receive 6 characters and store them temporarily.
However, the 732 IC Detector also sends XOFF when its input buffer
contains 60 characters. After this time, it can still receive maximum 22
characters (incl. L
F
).
If the transmission is interrupted for the time of 4 characters after the
732 IC Detector has sent XOFF, the string previously received will be
processed even if no L
F
has been sent.
732 IC Detector as receiver:
RxD
TxD
XOFF XOFF XON
L
F
External device
400 µ s Process
string
Data
input
Data
output
Time of 4
char.
max. 22
char.
Time
60 char.
732
External device 732
Time