Sartorius Docu-pH - Docu-pH+Meter Model: Data Interface; Female Interface Connector; Pin Assignment; Cabling Diagram

Docu-pH
+
Meter
Model: Data Interface
Intended Use
The Docu-pH
+
Meter
comes equipped with
an interface port for connection to a
computer or Sartorius printer.
Available Features
– Interface type: serial interface
– Operating mode: unidirectional
– RS232
– Transmission rate:
1200, 2400, 4800, 9600, 19200 baud
– Parity: odd, even, none, mark, space
– Character format: 7-/8-bit ASCII, parity,
1 or 2 stopbits
– Handshake:
2-wire interface: Software (XON/XOFF)
4-wire interface: Hardware (CTS/DTR-
none)
– Data output format: 24 characters
Female Interface Connector:
– 9-pin D-subminiature DB9 connector
with screw attachment for direct con-
nection to a computer or an optional
Sartorius data printer.
Pin Assignment:
Pin 1: Not connected
Pin 2: Serial data input (RxD)
Pin 3: Serial data output (TxD)
Pin 4: Data Terminal Ready (DTR)
Pin 5: Signal GND
Pin 6: Not connected
Pin 7: Not connected
Pin 8: CTS
Pin 9: Not connected
!No other pins may be assigned in the
Docu-pH
+
Meter
!
6
5
1
9
31
Cabling Diagram
Diagram for interfacing a computer to the Docu-pH
+
Meter
using the RS232C/V24 standard
and cables up to 15 m (~50 ft.) long
pH meter, 9-pin Computer, 9-pin
TxD 3 2
RxD 2 3
CTS 8 4
DTR 4 8
GND 5 5
Most Common Errors:
– The baud rates between the Docu-pH
+
Meter
and the computer/printer are different.
– The parity or stop bits are not set in the computer properly
– The pins in the cable are not properly configured.