Table 23 - Led Indications On Main Cpu - Honeywell HC900 Installation And User Manual

LED
Controller
Status
RS232 port:
PC Config'n tool:
XMT (upper LED)
RCV (lower LED)
RS485 port
(Operator Interface)
XMT (upper LED)
RCV (lower LED)
10Base-T port
(LAN/Internet)
XMT (upper LED)
LINK (lower LED)
10Base-T port
(I/O Expansion –C50
CPU only)
LAN (upper LED)
LINK (lower LED)
Revision 5
9/03
Diagnostics and Troubleshooting - External Indications of Diagnostic Information

Table 23 - LED Indications on Main CPU

LED State/Color
Off
Solid Red
Blinking Red
Solid Green
Blinking Green
Solid Yellow
Green (On/Off)
Green On/Off
Green (On/Off)
Green (On/Off)
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.
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.
HC900 Hybrid Controller Installation and User Guide
Indicates Condition:
No power.
Failed
(Diagnostic Code; refer to Table 27.)
PROGRAM Mode
RUN Mode
OFFLINE Mode
On when first byte is sent, Off when the last
byte is sent.
On when first byte is received, Off when the
last byte is received or failure is detected.
On when first byte is sent, Off when the last
byte is sent.
On when first byte is received, Off when the
last byte is received or failure is detected.
On while 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.
On when activity is present on the link.
On when another 10Base-T PHY is present on
the link
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