Lenze 8400 - Manual (Page 1292)

18 Function library
18.1 Function blocks | L_GainOffset_1
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Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
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18.1.86 L_GainOffset_1
This FB can amplify an analog input signal and then add an offset to it. Preferably to be
interconnected directly after the analog input terminals.
• The internal calculations (addition and subtraction) are carried out with 32 bits without
overflow/underflow. Division is not remainder considered.
• Gain and offset are selected via FB inputs.
• The value provided at the nOut_a output is internally limited to ±199.99 %.
Inputs
Outputs
Function
Identifier
Data type
Information/possible settings
nIn_a
INT
Input signal
• Scaling: 16384 ≡ 100 %
nGain_a
INT
Gain factor
• Scaling: 16384 ≡ 100 %
• 199.99 % ≈2
nOffset_a
INT
Offset
• Scaling: 16384 ≡ 100 %
Identifier
Data type
Value/meaning
nOut_a
INT
Output signal
• Internal limitation to ±199.99 %
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Q,QBD Q2XWBD
Q2IIVHWBD
Q*DLQBD
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nOut_a nIn_a Gain factor ⋅ ( ) Offset + =