HEIDENHAIN iTNC 530 HSCI - Encoders; Secondary Linear Axes; Signal Period

606 HEIDENHAIN Technical Manual iTNC 530 HSCI
Secondary
linear axes
The secondary linear axes U, V and W are parallel to the principal axes X, Y and
Z.
6.1.3 Encoders
Position encoders report positions and movements of the machine to the
control. The iTNC 530 operates with incremental and absolute encoders with
EnDat interface.
Signal period For any given distance the position encoder supplies a fixed number of signal
periods. In addition, the signal is interpolated in the control.
To calculate the signal period, the control requires the following data:
 In MP331.x, enter for each axis the length required for the number of signal
periods given in MP332.x.
 In MP332.x, enter for each axis the number of signal periods for the length
given in MP331.x.
The iTNC calculates the quotient:
Signal period =
+Y
+X
+U
+V
+W
+Z
Note
Large input values in MP331.x and MP332.x cannot be read by the PLC!
MP331.x
MP332.x
------------------------
Note
Digital axes:
If no position encoder (MP110.x = 0) is connected, the data of the speed
encoder must be entered in MP331.x and MP332.x. This also applies to
speed encoders with EnDat interface, since the incremental track of the
speed encoder is used for position feedback control.