Section 6 Data Output; Rs232 Connection - Hach 2100N Instruction Manual

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SECTION 6
6.1

RS232 Connection

Note:
Use of the supplied cable or
equivalent is mandatory for EC
compliance (a shielded cable
assembly is required).
Figure 18 Industry Standard DB-9 Male RS32 Connection
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DATA OUTPUT
The RS232 connection on the back panel mates with a standard RS232 connector
as indicated in Figure 18 (also see Table 3 and Figure 19 on page 64). The factory
RS232 interface output is an eight-bit data word plus one stop bit and no parity
with a baud rate of 1200. It can communicate with either a serial printer or a serial
communication port on a computer (see Figure 20 and Figure 21). If the RS232
feature is used for a serial printer, a printer cable assembly terminated with a
standard 25-pin D connector is available as an optional accessory (refer to on
page 74). With the use of a serial-to-parallel converter, the data string transmitted
from the 2100N Turbidimeter prints on any Epson compatible parallel printer of
the type normally used with IBM compatible applications.
Data is transmitted to the printer as a 39-character string plus the line feed and
carriage return.
Table 3 RS232 Pin Connections
Pin
2 - RXD
3 - TXD
5 - GND
6 - DSR
SHELL - FG
All other pins are not connected. Pin 6 (Data Set Ready) is an optional printer handshake
line, and should not be connected when using a computer.
63
Description
Receive Data
Transmit Data
Signal Ground
Data Set Ready
Frame Ground