Lenze DDS Function library Drive - Manual (Page 50)

2.4.3 Comparison (L_PHCMP)
Function library LenzeDrive.lib
Processing of phase−angle signals
2−40
L
LenzeDrive.lib EN 1.7
2.4.3 Comparison (L_PHCMP)
This FB compares two phase signals (paths) with each other.
byFunction
dnIn2_p
dnIn1_p bOut_b
L_PHCMP
Fig. 2−51 Comparison (L_PHCMP)
VariableName DataType SignalType VariableType Note
dnIn1_p Double−integer position VAR_INPUT Signal to be compared
dnIn2_p Double−integer position VAR_INPUT Comparison value
bOut_b Bool binary VAR_OUTPUT
byFunction Byte VAR CONSTANT RETAIN Selection of the function
Parameter codes of the instances
VariableName L_PHCMP1 L_PHCMP2 L_PHCMP3 SettingRange Lenze
byFunction C0695 C1207 C1272 1 ... 2 2
Function
Selection Comparison function If the comparison condition is fulfilled Note
byFunction = 1 dnIn1_p < dnIn2_p bOut_b = HIGH
dnIn1_p ³ dnIn2_p bOut_b = LOW
byFunction = 2 ½dnIn1_p½<½dnIn2_p ½ bOut_b = HIGH Compares the absolute value
of the inputs.
½dnIn1_p½³½dnIn2_p ½ bOut_b = LOW