Honeywell HC900 User Manual

Diagnostics and Troubleshooting - Controller CPU indicators
Revision 19 HC900 Process Controller Installation and User Guide 163
06/14
Table 26 – LED Indications on Controller CPUs
CPU
model
Figure
79 item
LED LED State/Color Description
All models 1 Controller Status Off
Solid Red
Blinking Yellow
Blinking Red
Solid Green
Blinking Green
Solid Yellow
No power.
Failed
Failed
(Diagnostic Code; refer to Table 27.)
PROGRAM Mode
RUN Mode
OFFLINE Mode
All models
2
For legacy systems,
RS-232/RS-485 S1 port
For new systems, RS-
485 S1 port
XMT/RCV
Yellow/Green Yellow when transmitting, green when
receiving.
All models
3
For legacy systems,
RS-232/RS-485 S2 port
For new systems, RS-
485 S2 port
XMT/RCV
Yellow/Green Yellow when transmitting, green when
receiving.
All models
4
5
E1 port
Upper LED
Lower LED
Yellow (On/Off)
Green (On/Off/Flash)
On for 100Base-T, Off for 10Base-T
On for connection, Off for no
connection, Flash for activity
C70
C75
6
7
E2 port
Upper LED
Lower LED
Yellow (On/Off)
Green (On/Off/Flash)
On for 100Base-T, Off for 10Base-T
On for connection, Off for no
connection, Flash for activity
C50
C70
C75
8
9
I/O port
Upper LED
Lower LED
Yellow (On/Off)
Green (On/Off/Flash)
On for 100Base-T, Off for 10Base-T
On for connection, Off for no
connection, Flash for activity

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