LED Indicators
Original instructions
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LED Display Location
The LED display contains 10 indicators located on the top front of the 140 ESI 062 10 module.
Indications
The following table describes the indications when the LEDs are ON.
LEDs
Color
Indication
R
Green
The module has passed power-up diagnostics.
Active
Green
Bus communication is present.
F
Red
The module has detected a fault.
RX1
Green
Received data on RS-232 Port 1
TX1
Green
Transmitted data on RS-232 Port 1
RX2
Green
Received data on RS-232 Port 2
TX2
Green
Transmitted data on RS-232 Port 2
Status
Yellow
Status
Error 1
Red
There is an error condition on Port 1
Error 2
Red
There is an error condition on Port 2
Blink Sequences
The F, Status, Error 1, and Error 2 LEDs can blink in sequence to indicate the following conditions:
F
Status
Error 1
Error 2
Condition
Blinking
Blinking
Blinking
Blinking
The ASCII module is initializing
First power-up
OFF
ON
OFF
OFF
Programming mode
OFF
OFF
ON
N/A
Serial Port 1 has incurred a buffer overrun
OFF
OFF
N/A
ON
Serial Port 2 has incurred a buffer overrun
N/A
Blinking (see crash codes)
OFF
OFF
The module is in kernel mode and may have an error
Crash Code Indications
The Status LED blinks in various patterns to indicate the module’s crash codes.
Number of Blinks
Code (in hex)
Error
Steady ON
0000
Requested kernel mode
4
6631
Bad microcontroller interrupt
5
6503
RAM address test error
8
6402
RAM data test error
7
6300
PROM checksum error (EXEC not loaded)
6301
PROM checksum error
630A
Flash message checksum error
630B
Executive watchdog timeout error
8
8000
Kernel other error
8001
Kernel PROM checksum error
8002
Flash program error
8003
Unexpected executive return