Metrohm 766 IC Sample Processor - Manual (Page 113)

5 Interfaces
766 IC Sample Processor
108
766 IC Sample Processor as sender:
RxD
TxD
XOFF
L
F
XON
Software handshake with line stop (SWline)
Handshake inputs are (CTS, DSR, DCD) are not checked at the 766 IC
Sample Processor, handshake outputs (DTR, RTS) are set.
The 766 IC Sample Processor has an input buffer which can accept a
string of up to 80 characters + C
R
L
F
. As soon as an L
F
is recognized,
the 766 IC Sample Processor sends XOFF. After this time, it can still re-
ceive max. 6 characters and store them temporarily. The string sent
previously is now processed by the 766 IC Sample Processor. It then
sends XON and is again ready to receive.
766 IC Sample Processor as receiver:
RxD
TxD
XON
L
F
L
F
XOFF
766 IC Sample Processor as sender:
RxD
TxD
XOFF
L
F
XON
L
F
L
F
The transmission of the 766 IC Sample Processor can be stopped by
the external device with XOFF. After the receipt of XOFF, the 766 IC
Sample Processor finishes transmission of the line already started. If
the data output is blocked for more than 3 s by XOFF, " E43 " appears in
the display.
External device
Data
input
Data
output
Data output
enabled
Data output
disabled
max. 4
char.
Time
766
External device
Data
input
Data
output
766 input
blocked
Process string 400 µ s
Time
766
External device
Data
input
Data
output
Response 1 st line
Inquiry
Data output of
766 free
Data output of 766
blocked
Time
766