Lenze PLC Designer PLC Designer (R3-1) Instrukcja Użytkownika Pobierz pdf (Strona 39)

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Lenze Specific Functions

 DMS 4.1 EN 03/2011 TD29 37

Function block L_SMC_TouchProbe_FastIO

Function library: L_SM3_DriveUtil.lib

A fast input of the EPM-S207 I/O compound module provides a time stamp entry (latch

of the internal µs−ticker), which is converted into a position in this function block.

Note: This block is similar to the already existing touch probe block for Servo Drives

9400 and ECS devices. Therefore, a detailed description is not given here.

Please observe:

• The function block L_SMC_TouchProbe_FastIO does not compensate the

propagation times of the axis positions on the respective fieldbus. The

compensation can, however, be specified manually via the input

wExternalDelayKompensation.

• Encoders connected to a counter I/O compound module (EMP-S600 to EPM-S604)

are compensated automatically. The counter modules are also provided with the

time stamp functionality. The time stamps are transferred to the control together

with the position values.

• For very precise touch probe measurement results, we recommend to implement

the position measurement via an encoder connected to a counter I/O compound

module.

• How to connect a counter I/O compound module as a SoftMotion axis is explained

in the description for the function block L_SMC_FreeEncoder.

Note: If several I/O compound modules with time stamp functionality (µs−ticker)

are used, they must be synchronised by the RWB controller.

Inputs/outputs (VAR_IN_OUT)

Designator / Data type Info / Setting options

Axis Reference to the FreeEncoder axis; here any SoftMotion axis can be

connected.

FastIO_InRef I/O compound module reference; this block is automatically added to the

device tree as a subnode and instantiated when, for example, the EPM-

S207 module is inserted in the device tree. The instance of this block

must be transferred to the touch probe block.

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Lenze PLC Designer PLC Designer (R3-1) Instrukcja Użytkownika Strona 39