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Chapter 10. Configuring the I/O Driver from FIX/iFIX Applications173
Parameters for 15AL Signal Conditioning
Description 15-bit binary number.
Input Range 0 – 32767.
Scaling Scales 15-bit binary values to the
database block’s EGU range.
Read
Algorithm
Reads from a 16-bit register with
alarming using the same algorithm
as 15BN, and returns a status
indicating whether the value is out
of range and in an alarm state, or
OK.
Result = ((Raw_value/32767) *
Span_egu) + Lo_egu.
Read
Algorithm
Variables
Lo_egu – the database block’s low
engineering value.
Span_egu – the span of the
engineering values.
Raw_value – the value stored in the
field device’s register.
Result – the scaled value stored in
the database block.
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