User Interface; Table 26 - Led Indications On Ethernet Hub; Table 27 - Controller Module Diagnostics - Honeywell HC900 Installation And User Manual

LED
10Base-T port
(I/O Expansion –C50
CPU only)
XMT (upper LED)
LINK (lower LED)

User Interface

Table 27 lists Controller Module diagnostic indications (Operator Interface messages, and Status LED) along with
causes of the indications, automatic control file actions, and suggested user actions.
Hazardous voltages exist in the equipment enclosure.
•
Identify and avoid contact with voltage sources.
•
Disconnect power before servicing. (More than one switch may be required to disconnect all power.)
Failure to comply with these instructions could result in death or serious injury.

Table 27 - Controller Module Diagnostics

OI Screen OI Screen
Item Item Value
N/A N/A
N/A N/A
SYSTEM GOOD
FORCED
OUTPUT
Revision 5
9/03

Table 26 - LED Indications on Ethernet Hub

LED State/Color
Green (On/Off)
Green (On/Off)
NOTE: These LEDs indicate activity on the communication port, they are
controlled by hardware (PHY chip), not by software.
Table 27 - Controller Module Diagnostics
Number of Possible Cause
LED
Strobes
1 RAM failed on power-
up.
1 ROM failed on power-
up.
N/A N/A
2 A block has an output
that is forced.
HC900 Hybrid Controller Installation and User Guide
Diagnostics and Troubleshooting - User Interface
Indicates Condition:
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.
Control File Action
Executes an infinite loop
that toggles the LED.
Communications and
control are disabled.
Executes an infinite loop
that toggles the LED.
Communications and
control are disabled.
N/A
None
User Action
1. Cycle power
2. Replace CPU
3. Replace rack
1. Cycle power
2. Replace CPU
3. Replace rack
N/A
Remove force on
block output.
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