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IQH1S 1U Enclosure
SECTION 1
IQH1SINS
23/11/06
www.snellwilcox.com
Version 1 Issue 4
1.5
LED INDICATORS
+5V
This green LED indicates that the +5V
supply is present.
-5V
This green LED indicates that the -5V
supply is present.
Error
This red LED indicates that the processor
is running outside of its normal operational
parameters.
Note that this LED will flash during startup.
SDA
This green LED will flash indicating I
2
C
backplane data line activity.
SCL
This green LED will flash indicating I
2
C
backplane clock activity.
NRX
This yellow LED will flash indicating data is
being received via the RollNet connection.
NTX
This green LED will flash indicating data is
being
transmitted
via
the
RollNet
connection.
SRX
This yellow LED will flash indicating data is
being received via the RS422 connection.
STX
This green LED will flash indicating data is
being
transmitted
via
the
RS422
connection.
4 78
2 4 78
+5V
-5V
Error
STX
SRX
NTX
NRX
SCL
SDA
ex Switches
LED Status Information
LED
Continuously ON
OFF
Flashing
+5V
Normal
+5V supply OK
+5 V Power Supply Failure
N/A
-5V
Normal
-5V supply OK
-5 V Power Supply Failure
N/A
Error
Error -
Gateway
software not running
Normal
– Software cleared
during operation
Error -
Software constantly rebooting
(Watchdog)
SDA
Error -
Backplane data
line error
Normal
- I
2
C backplane
data line idle
Normal
– Indicates backplane data line
activity
SCL
Error -
Backplane clock
line held Low
Normal
- I
2
C backplane
clock line idle
Normal
– Indicates backplane clock line
activity.
NRX
N/A
Normal
– data line idle
Normal
– Indicates data is being received
via the RollNet connection.
NTX
N/A
Normal
– data line idle
Normal
– Indicates data is being
transmitted via the RollNet connection.
SRX
N/A
Normal
– data line idle
Normal
– Indicates data is being received
via the RS422 connection.
STX
N/A
Normal
– data line idle
Normal
– Indicates data is being
transmitted via the RS422 connection.