Honeywell HC900 User Manual

Components and Architecture - Ethernet Devices/Considerations
Revision 19 HC900 Process Controller Installation and User Guide 27
06/14
Redundant controllers: PC communicates with Lead controller only.
Figure 17 – RS-232 Modem Devices
Ethernet Devices/Considerations
Ethernet device requirements vary with specific applications. Regarding intended use, however, they fall
into two categories:
• The HC900-expansion I/O link is a private network and the switch used for the
interconnection of the HC900 Processor and Scanners must not be connected to any other LAN or
WAN. Likewise, no devices other than the HC900 components should be connected to the I/O link
Switch. Failure to comply will cause communication failures on the I/O link causing I/O modules to go
in and out of their failsafe settings.
• Components of the Ethernet Open Connectivity Network, which links an HC900 Process Controller to
Peers, to HMI Supervisory Stations, and to other Ethernet 10/100Base-T devices that support TCP/IP.
The Ethernet Open connectivity Network is potentially more complex than the I/O expansion network,
and in some cases, may require the services of an IT networking professional.

Honeywell HC900 Specifications

General

Series	HC900
Redundancy	Optional
Programming Language	Function Block Diagram, Ladder Logic, Structured Text
Inputs	Analog, Digital
Outputs	Analog, Digital, Relay
Display	Optional
Control	PID, Advanced Control
Power Supply	24V DC or 100-240V AC
Storage Temperature	-40°C to 85°C
Humidity	5% to 95% non-condensing
Communication Protocols	Modbus, Ethernet