Table 24 - Led Indications On Scanner Module; Table 25 - Led Indications On I/O Module - Honeywell HC900 Installation And User Manual

Diagnostics and Troubleshooting - External Indications of Diagnostic Information
LED
Scanner
Status
10Base-T port
(I/O Expansion –C50
CPU only)
XMT (upper LED)
LINK (lower LED)
LED
Module Status
Channel LEDs
(one per input or
output)
120

Table 24 - LED Indications on Scanner Module

LED State/Color
Off
Solid Red
Blinking Red
Solid Green
Blinking Green
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 25 - LED Indications on I/O Module

LED State/Color
Off
Solid Red
Blinking Red
Blinking Yellow
Solid green
Blinking Green
Green (On/Off)
HC900 Hybrid Controller Installation and User Guide
Indicates Condition:
No power.
Failed
(Diagnostic Code; refer to Table 30 - Scanner
Diagnostics.)
Startup Mode
Scan Mode
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.
Indicates Condition:
No power.
Hardware failure
Diagnostic Code; refer to Table 28 - Bad
Module Diagnostics.
At least one output is Forced.
Cold start with passing diagnostics
Normal scanning
For Inputs, indicates On or Off status of the field
input even if Forced to the opposite state.
For Outputs, indicates On or Off status of the
output including if Forced.
Revision 5
9/03