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Hardware limit switch HLP/HLN
Limit switches limit the absolute usable range of the drive. The switching functions “N/C contact” or
“N/O contact” can be parameterised dependent on the limit switch type. The reaction of the device to
limit switch signals can be parameterised using the error management function.
The drive is blocked in the positioning direction of the active limit switch. As soon as the limit switch is
active, travel is possible only in the reverse direction after acknowledgment of the error.
Additional information è 5.5 Hardware limit switch reached.
Parameters and diagnostic messages
ID Px. Parameters Description
Determines whether the reversal of the direction of rotation
shall be activated.
This means:
–
0: inactive
– 1: active
Access read/write
Update reinitialization
1170 Reversing the direc-
tion of rotation
Unit −
Determines whether the encoder signal shall be inverted.
This means:
–
0: inactive (do not invert the encoder signal)
– 1: active (invert the encoder signal)
An encoder is allocated to every index (-> Tab. "Inverting index
for encoder signal parameter (P1.1171.0.x)")
Access read/write
Update reinitialization
1171 Invert encoder signal
Unit −
Specifies whether the sequence of phases is swapped. The usu-
al phase sequence for the servomotor to turn clockwise is
ascending (U, V, W). If the servomotor has the phase sequence
U, W, V, the phase sequence is reversed. 0 for the phase
sequence U, V, W and 1 for the phase sequence U, W, V. For a
stepper motor, the phase sequence for 0 is the assignment A-#A
and B-#B. For the phase sequence equal to 1, the assignment A-
#A and #B-B is. Changing the phase sequence changes the
rotating field of the motor. 1172 Phase rotation
Access read/write
Product configuration
124 Festo — CMMT-ST-SW — 2019-02