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Omni 7000 Series Installation Guide

Omni 7000 Series
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OMNI 4000/7000 Installation Guide Rev H
3-26
Installation
Figure 3-21: Serial Module Factory-configured for RS-232
If you are using the factory default (RS-232) mode for both ports, continue to the Connecting RS-
232 Serial Devices section of this manual.
If you are using RS-485 2 or 4-wire mode, go to the Appendix A, A.1 to configure for RS-485
mode.
Connecting RS-232 Serial Devices
A maximum of three S modules can be installed in the OMNI 4000/7000 for a total of six serial
ports. When connecting the cables from the serial devices to a serial port on the back panel,
follow these instructions for safe installation and operation:
1.
Determine which device to connect to each
serial port.
2.
Connect a cable from the selected port on
the serial module to the selected electronic
device.
3.
For a single flow computer or the first flow
computer in a series, jumper Pin 1 and
Pin 2 together.
Table 3-6 provides guidance for back
panel wiring.
The internal resistor on Pin 2 (8) allows the RS-232C port to be tri-stated so that any
noise generated on the line during idle communications is suppressed and not
processed as data.
The RS-232 pull-down termination
is on Pin 2 on the terminal block.

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Omni 7000 Series Specifications

General IconGeneral
BrandOmni
Model7000 Series
CategoryDesktop
LanguageEnglish

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