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SECTION 5
PRINTING/TRANSFERRING DATA
5.1
Connecting to Printers/Computers
5.1.1
Connecting with the RS232 Cable
The standard 9-pin RS232 connector on the meter connects with a
9-pin D-sub connector. A suitable cable is listed under Optional
Apparatus page 57.
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.
5.1.2
Connecting to a Printer
Connecting a serial printer to the meter requires a 9-pin to 25-pin
RS232 cable. See Figure 5. The cable provides a direct link
between the instrument and the 25-pin connector used for the
serial port on most serial printers. Table 4 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 cable to fit into the
printer. This cable is shipped with the printer when ordered from
Hach Company.
Table 4 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