Function Blocks For Calculated Channels - HBM PMX Manuel D'emploi

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10.3 Function blocks for calculated channels

The following applies for all function blocks, unless specified otherwise:
Calculation rate
Range of values of the
floating point values
1 Adder-multiplier with 4 summands (adder4)
Function
Inputs
Outputs
Parameters
Default
Exception handling
2 Multiplier (mult2)
Function
Inputs
Outputs
Parameters
Default
Exception handling
Equals the data rate (default 19200/s)
Single-precision floating point resolution as per IEEE754
Range approx. +/-3.4*10
Adds four summands weighted with one factor each
out0 = in0 ∗ m0 + in1 ∗ m1 + in2 ∗ m2 + in3 ∗ m3
Summands in0 .. in3
in0 .. in3 combined with constant 0.0
If one or a number of inputs is marked as invalid (Invalid
bit), the output is also marked as invalid. The computation
is nonetheless done and output .
If out of range, Not-a-Number (+/- inf) is output.
Multiplies two signals
in0, in1 combined with constant 1.0
If one or a number of inputs is marked as invalid (Invalid
bit), the output is also marked as invalid. The computation
is nonetheless done and output .
If out of range, Not-a-Number (+/- inf) is output.
Sum out0
Factors m0 .. m3
m0 .. m3 = 1.0
Inputs in0, in1
Product out0
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