ADLINK aTCA-6200A - Manual (Page 37)

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Byte Data field
[7:6] - reserved. Returned as 1b. Ignore on read.
[5] - 1b = at or above (≥) upper non-recoverable threshold
[4] - 1b = at or above (≥) upper critical threshold
[3] - 1b = at or above (≥) upper non-critical threshold
[2] - 1b = at or below (≤) lower non-recoverable threshold
[1] - 1b = at or below (≤) lower critical threshold
[0] - 1b = at or below (≤) lower non-critical threshold
For discrete reading sensors
[7] - 1b = state 7 asserted
[6] - 1b = state 6 asserted
[5] - 1b = state 5 asserted
[4] - 1b = state 4 asserted
[3] - 1b = state 3 asserted
[2] - 1b = state 2 asserted
[1] - 1b = state 1 asserted
[0] - 1b = state 0 asserted
(5) For discrete reading sensors only. (Optional)
(00h Otherwise)
[7] - reserved. Returned as 1b. Ignore on read.
[6] - 1b = state 14 asserted
[5] - 1b = state 13 asserted
[4] - 1b = state 12 asserted
[3] - 1b = state 11 asserted
[2] - 1b = state 10 asserted
[1] - 1b = state 9 asserted
[0] - 1b = state 8 asserted