Honeywell HC900 User And Installation Manual

190 HC900 Process & Safety Controller User and Installation Manual Revision 6
21 April 2017
Ethernet Switch indicators
Table 33 – LED Indications on Ethernet Switch
LED
LED State/Color
Description
10/100 Base-T port
Legacy
XMT (upper LED)
LINK (lower LED)
Green (On/Off)
Green (On/Off)
On while a message is being sent from the Main CPU;
otherwise Off.
On while the Main CPU is receiving a message.
Remains On as long as host is present; Off when the
host is removed from the link.
New Systems
Upper LED
Lower LED
Link / Yellow
Speed / Green
On while the as long as electrical connection host is
detected; Flashes during message transactions.
OFF for 10Base-T connections
ON for 100 Base-TX connections
NOTE: These LEDs indicate activity on the communication port, they are
controlled by hardware (PHY chip), not by software.

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