Honeywell 900U02-0100 - Communications Installation Guide; Communications Installation Overview

I/O Module Installation and Wiring - Overview
Revision 8 HC900 Process & Safety Controller User and Installation Manual 139
September 2018
7. Communications Installation
7.1. Overview
This section contains descriptions, procedures and recommendations for installing communications
systems and components.
7.2. Wiring and cabling
Table 18 – Connect Communications Wiring and Cabling
Step
Procedure
Comments/Reference
1
Determine requirements
for communications links.
See:
 Ethernet Network on
page 32
 For legacy system,
serial Ports (RS-232
and RS-485) on page
38. For new system,
two RS-485 serial ports
on page 38
 Cabling/Wiring Distance
Planning on page 58.
2
Refer to the diagram at
right, and to Table 19
Links to Controller
Communication Ports for
connection details.
All ports are shown.
(Availability depends on
controller model, see
Figure 12 page 27.)
Connect communications
cabling.
For Modbus connections,
see page 160.
Communication Ports (all ports shown)