Introduction
10 HC900 Process & Safety Controller User and Installation Manual Revision 6
21 April 2017
Figure 2 – Expanded HC900 Controller Configuration (C50/C70 CPU only)
The HC900 Controller design enables users and OEMs who are adept in system integration to assemble a system
that fits a broad range of requirements. Any configuration can be readily modified or expanded as requirements
dictate. In initial configuration and in subsequent modifications, the HC900 Controller affords an optimum balance
of performance and economy.
Configurations such as those shown in Figure 1 and in Figure 2, as well as many variations, can be assembled from
modular components. Many of the components are available from Honeywell, and some are available from third-
party suppliers. These modular components are available in any quantity and mix that make the most sense for a
given application.
As indicated in Figure 3, the HC900 Controller includes provisions for communication via Ethernet with host
systems such as the Honeywell Experion HMI and other HMI software that supports Ethernet Modbus/TCP
protocol. Also, the communication structure of the HC900 Controller enables remote placement of input/output
components, allowing significant economies in cabling and wiring.
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