Lenze DDS Function library Drive Instrukcja Użytkownika Pobierz pdf (Strona 48)

2.4.1 Arithmetic (L_ARITPH)

Function library LenzeDrive.lib

Processing of phase−angle signals

2−38

LenzeDrive.lib EN 1.7

2.4 Processing of phase−angle signals

2.4.1 Arithmetic (L_ARITPH)

This FB calculates a phase output signal from two phase input signals.

L _ A R I T P H

± 2

3 0

d n O u t _ p

b y F u n c t i o n

d n I n 1 _ p

d n I n 2 _ p

Fig. 2−49 Arithmetic (L_ARITPH)

VariableName DataType SignalType VariableType Note

dnIn1_p Double Integer position VAR_INPUT

dnIn2_p Double Integer position VAR_INPUT

dnOut_p Double Integer position VAR_OUTPUT The signal is limited to ±2

byFunction Byte VAR CONSTANT RETAIN Selection of the function

Parameter codes of the instances

VariableName L_ARITPH1 SettingRange Lenze

byFunction C1010 0 ... 3, 14, 21, 22 1

Function

Selection of the function Arithmetic function Limiting of the

result

Note

byFunction = 0 dnOut_p = dnIn1_p without dnOut_p is not limited.

byFunction = 1 dnOut_p = dnIn1_p + dnIn2_p 2

byFunction = 2 dnOut_p = dnIn1_p − dnIn2_p 2

byFunction = 3 dnOut_p = (dnIn1_p  dnIn2_p) / 2

(remainder not considered)

byFunction = 14 dnOut_p = dnIn1_p / dnIn2_p 2

(remainder not considered)

byFunction = 21 dnOut_p = dnIn1_p + dnIn2_p without with overflow

byFunction = 22 dnOut_p = dnIn1_p − dnIn2_p without with overflow

 byFunction = 21/22:

Please note, that an overflow may occur, and then the numerical value of dnOut_p does not

match the result.

 byFunction = 14:

If the denominator = 0, then dnOut_p = 2

The sign depends on the sign of dnIn1_p.

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