
176 Siemens Simatic S7 Driver Online Help
See Also
Specifying Signal Conditioning in Database Manager
3BCD Signal Conditioning
Signal conditioning defines how the process database scales incoming data. Use
3BCD signal conditioning with counters.
Parameters for 3BCD Signal Conditioning
Write
Algorithm
Writes to a 16-bit register using the
following algorithm:
Result = (((InputData –
Lo_egu)/Span_egu) * 65535) + 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 3-digit Binary Coded Decimal
(BCD) value.
Input Range 0 – 999.
Scaling Scales 3-digit Binary Coded Decimal
values to the database block’s EGU
range.
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