Emerson Vission 20/20 Operation And Service Manual page 183

Appendix B • Vission 20/20 Application Procedures
Remote Control and Monitoring of
20/20 Panel
INTRODUCTION
This document provides the reader with guidelines to
successfully communicate to and integrate with the
Vilter 20/20 control panel.
NETWORKING
The Vission 20/20 directly supports two different hard-
ware networks;
a. Ethernet – supporting Modbus TCP and
Ethernet I/P protocols
b. RS485 – supporting serial Modbus RTU
protocol
COMMUNICATION WIRE
For any communication network to work properly, it is
important to use the proper wire.
ETHERNET CABLE SPECIFICATIONS
Category 6 cable is recommended. Many installations
are now using gigahertz switches, and category 6 pro-
vides greater immunity to signal crosstalk.
RS-422/485 CABLE SPECIFICATIONS
The following cables are recommended for RS-422/485
serial communications. Although you may elect to
use other cables, keep in mind that low capacitance
(less than 15 pF/ft.) is important for high-speed digital
communication links. The cables listed below are all
24-gauge, 7x32 stranded, with 100-ohm nominal im-
pedance and a capacitance of 12.5 pF/ft.
Select from the following four-, three-, and two-pair
cables, depending on your application needs. All will
yield satisfactory results. It is recommended that you
choose a cable with one more pair than your application
requires.
Use one of the extra wires, rather than the shield, for the
common.
Four-Pair
• Belden P/N 8104 (with overall shield)
• Belden P/N 9728 (individually shielded)
• Belden P/N 8164 (individually shielded with overall
shield)
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0
• Manhattan P/N M3477 (individually shielded with
overall shield)
• Manhattan P/N M39251 (individually shielded with
overall shield)
Three-Pair
• Belden P/N 8103 (with overall shield)
• Belden P/N 9730 (individually shielded)
• Belden P/N 8163 (individually shielded with overall
shield)
• Manhattan P/N M3476 (individually shielded with
overall shield)
• Manhattan P/N M39250 (individually shielded with
overall shield)
Two-Pair
• Belden P/N 8102 (with overall shield)
• Belden P/N 9729 (individually shielded)
• Belden P/N 8162 (individually shielded with overall
shield)
• Manhattan P/N M3475 (individually shielded with
overall shield)
• Manhattan P/N M39249 (individually shielded with
overall shield)
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