Table of Contents
Advertisement
Figure 15
4-20 mA Device Adjustment Setup
2.8 Data Communications
2.8.1 RS232 Communications
16116Install.fm
1. Turn the 8400 meter off. Using the extension leads, connect the
milliampmeter in series with the 4-20 mA device (chart recorder, etc.)
(Figure
15).
2. Perform steps 1 through 22 for each channel that will be connected to a
4-20 mA device.
3. Unplug the screw terminal connector with attached Surge Protectors and
remove the extension leads.
4. Observing the correct polarity (+ and –), connect the 4-20 mA device to
the Surge Protector screw terminals and reinsert the terminal plug
assembly.
Data communication configurations for the 8450 monitor include: 1) No
Communications option, 2) RS232 with data logging option, and 3) RS485
with data logging option.
The default communications data format is 9600 baud, 8-bit word, 1 stop bit,
and no parity. Baud and parity can be changed in the COMM menu in the
General menu (see
Table
Monitors with the RS232 with data logging option can dump data to a
personal computer (PC) or a printer connected to the four-conductor Din
connector at the base of the monitor via Personal Computer Serial Cable
(Cat. No. 16086). The data dump must be initiated at the Residual Chlorine
Monitor by a key sequence at the monitor's front panel (see
page
47). Serial cable connections are shown in
page
22.
Note: To send data to a printer using the PC cable, it may be necessary to swap the
position of the wires connected to pins 2 and 3 at the TB6 terminal block on the
power supply board shown in
also be required.
5).
Figure 16
Figure
16. A male to female connector adaptor may
Section 2
section 3.23.5 on
and
Table 2 on
Page 21
Data Communications
Advertisement
Table of Contents
