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SECTION 7
PRINTING AND DATA TRANSFER
7.1
Connecting to Printers/Computers
7.1.1
RS232 Cable Description
The standard 9-pin RS232 connector on the Docking station
connects with a 9-pin sub-D connector. A suitable cable is listed
under REPLACEMENT PARTS AND ACCESSORIES on page 85.
The RS232 interface output is an 8-bit data word plus one stop bit
and no parity with a baud rate of 1200. It can communicate with a
serial printer or a serial port on a computer.
7.1.2
Connecting to a Printer
To connect a serial printer to the Docking Station, use a 9-pin to
25-pin RS232 cable. The cable provides a direct link between the
instrument and the 25-pin connector used for the serial port on
most serial printers. Table 14 shows the proper pin connections
for 25-pin printer cables. Using cables that do not match the pin
information in the table may cause undesirable operation.
Parallel printers require a serial-to-parallel adapter. This allows
use of printers that are normally used for IBM-compatible
applications.
The Citizen PN60 printer requires a special printer cable that is
shipped with the printer when it is ordered from Hach Company.
1. Align the holes in the RS232 cable connector with the pins in
the serial port of the Docking Station.
Table 14 Standard 9-pin to 25-pin Printer Cable
9-pin D Connector Socket
Serial Printer 25-pin D Connector,
Plug
Pin
Signal Name
Pin
Signal Name
2
RXD
no connection
3
TXD
3
RXD
4
DTR
no connection
5
GND
7
GND
6
DSR
20
DTR
7
RTS
no connection
8
CTS
20
DTR
