
182 Siemens Simatic S7 Driver Online Help
See Also
Specifying Signal Conditioning in Database Manager
8BN Signal Conditioning
Signal conditioning defines how the process database scales incoming data.
Parameters for 8BN Signal Conditioning
Write
Algorithm
Writes to a 16-bit register using the
same algorithm as 13BN, and returns
a status indicating whether the value
is out of range and in an alarm state,
or OK.
Result = (((InputData –
Lo_egu)/Span_egu) * 8191) + 0.5
Write
Algorithm
Variables
Lo_egu – the low engineering value.
Span_egu – the span of the
engineering values.
InputData – the database block’s
current value.
Result – the value sent to the process
hardware.
Description 8-bit binary number.
Input Range 0 – 255.
Scaling Scales 8-bit binary values to the
database block’s EGU range.
Ignores the most significant byte.
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