User's Manual Part 2

122 OEMV Family Installation and Operation User Manual Rev 5B
Chapter 7 Built-In Status Tests
7.5.6 Set and Clear Mask for all Status Code Arrays
The other two mask words in the status code arrays operate on the associated status word in the same
way. These mask words are used to configure which bits in the status word will result in the broadcast
of the RXSTATUSEVENT log. The set mask is used to turn logging on temporarily while the bit
changes from the 0 to 1 state. The clear mask is used to turn logging on temporarily while the bit
changes from a 1 to a 0 state. Note the error word does not have any associated mask words. Any bit
set in the error word will result in the broadcast of the RXSTATUSEVENT log (unless unlogged).
Refer also to the RXSTATUSEVENT log in the OEMV Firmware Reference Manual for a more
detailed description.
7.6 Status LEDs
7.6.1 OEMV Cards
The diagnostic LED provided on the OEMV family cards blinks green on and off at approximately 1
Hz to indicate normal operation.
Error bits and status bits that have been priority masked, as errors, will cause the LED to flash a code
in a binary sequence. The binary sequence will be a 6 flash (0.5 second on and 0.25 second off per
flash) sequence followed by a 1 second delay. The sequence will repeat indefinitely. If there is more
than one error or status present, the lowest number will be output. The codes are ordered to have the
highest priority condition output first.
The first flash in the 6 flash sequence indicates if the code that follows is an error bit or a status bit.
Error bits will flash red and status bits will flash yellow. The next 5 flashes will be the binary number
of the code (most significant bit first). A red flash indicates a one and a yellow flash indicates a zero.
For example, for an error bit 6, the binary number is 00110 so the output sequence would be:
followed by a 1 second delay. The sequence repeats indefinitely until the receiver is reset.
In the example on Page 123, the first flash in the sequence is red, which means that a bit is set in the
receiver error word. The next five flashes give a binary value of
00111. Converting this value to
decimal results in a value of
7. Therefore, bit 7 of the receiver error word is set, indicating there is a
problem with the supply voltage of the receiver’s power circuitry.
0 0.5 0.75 1.25 1.50 2.0 2.25 2.75 3.0 3.5 3.75 4.25 5.25
Red Yellow Yellow Red Red Yellow