Section 6 Communication Setup; Rs232 Cable; Rs232 Connection; Rs232 Programming - Hach 900 MAX Instrument Manual

Section 6

6.1 RS232 Cable

6.1.1 RS232 Connection

Pin
A
B
C
D
E
F

6.1.2 RS232 Programming

Note: Some early generation IBM
compatibles may have a serial port
that is not capable of
communicating reliable at 19,200
baud. If errors develop at high baud
rates, try lowering the baud rate one
step at a time (on both the sampler
®
and Streamlogg II™, InSight
®
Vision software) until error free
communications is achieved.
8990cm.fm
Communication Setup
Communication setup details connections and programming features of the:
• RS232 Serial Port
• Optional Modem
• 4–20 mA Option
• Alarm Relays
• Analog Inputs
The RS232 connector is a serial input/output port for communicating with a
sampler from an external device such as a Data Transfer Unit (DTU-II) or
direct serial connection to a personal computer with application software.
Table 13 RS232 Connection
Signal Description
not used
ground
DSR
RCD
DTR
TXD
Cable Required
RS232 Sampler/Flow Meter to PC Cable Assembly (Cat. No. 1727), 10 ft long,
6-pin connector on one end, 9-pin D connector on the other end (9-pin to
25-pin D type adapter included).
1. From the Main Menu, select
COMMUNICATIONS SETUP > RS232 SETUP
2. Select a baud rate for data communications by pressing the
key to cycle through the possible choices; 1200, 2400, 4800,
CHOICE
9600 or 19,200 baud. The higher the baud rate setting, the faster data will
transfer. Set the baud rate to the highest setting allowed by the computer.
, or
The baud rate must correspond to the baud rate selected in the software.
Press
ACCEPT
Note: Long runs of RS232 cable, especially if they are run near large motors or
fluorescent lights can cause communication errors and may require a slower
baud rate.
(section 6.1 on page
(section 6.2 on page 80)
(section 6.3 on page 87)
(section 6.4 on page 89)
(section 6.5 on page 93)
OPTIONS > ADVANCED OPTIONS >
.
79)
Wire Color
White
Blue
Yellow
Black
Red
Green
.
CHANGE
Communication Setup
Page 79