Lenze DDS Function library Drive - Manual (Page 49)

Function library LenzeDrive.lib
Processing of phase−angle signals
2.4.2 Addition (L_PHADD)
2−39
L
LenzeDrive.lib EN 1.7
2.4.2 Addition (L_PHADD)
This FB adds or subtracts phase signals, depending on the input that is used.
+
+
-
L _ P H A D D
d n O u t _ p d n I n 1 _ p
d n I n 2 _ p
d n I n 3 _ p
± 2 - 1 3 1
d n O u t 2 _ p
Fig. 2−50 Addition (L_PHADD)
VariableName DataType SignalType VariableType Note
dnIn1_p Double−integer position VAR_INPUT Addition input
dnIn2_p Double−integer position VAR_INPUT Addition input
dnIn3_p Double−integer position VAR_INPUT Subtraction input
dnOut_p Double−integer position VAR_OUTPUT The signal is limited to ±2147483647
dnOut2_p Double−integer position VAR_OUTPUT Signal without limiting / with overflow
Functional sequence
1. The signal at dnIn1_p is added to the signal at dnIn2_p
2. The signal at dnIn3_p is subtracted from the calculated result.
3. The result of the subtraction is then limited to ±2147483647 and output to dnOut_p and output
as unlimited to dnOut2_p.
Please observe, that at dnOut2_p there may be an overflow, thus producing a false value.