Metrohm 781 pH/Ion Meter: Operation via RS-232 - Manual (Page 24)

3.2 Handshake
22
780/781 pH/Ion Meter - Operation via RS232
3.2 Handshake
Software-Handshake, SWchar
Handshake inputs on the pH/Ion Meter (CTS) are not checked.
Handshake outputs (DTR, RTS) are set by the pH/Ion Meter.
The pH/Ion Meter sends XOFF when its input buffer contains 384
characters. After this it can receive 128 extra characters (including L
F
).
pH/Ion Meter as receiver :
pH/Ion Meter as sender :
max. characters: 2 characters at 300...9600 baud
16 characters at ≥ 19200 baud
pH/Ion Meter external device
max. 128
characters
384 characters
XOFF XON
L
F
RxD
TxD
Data output
Data input
Time
pH/Ion Meter external device
Time
Data output
Data input
RxD
TxD
XOFF XON
L
F
max.
characters
Data output
disabled
Data output
enabled