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ifm Vision Assistant O3M
UK
15.7.1 "Teach" module
The "Teach" module allows permanent storage of information on the device. A typical use case is the
storage of reference values.
The module has an input and an output. The module can store both single signals and vectors. Saving
does not affect the size of a vector. In total, a maximum of 64 values can be stored.
The information at the input is stored when the teach signal is sent to the device on the CAN interface.
The nomenclature of the CAN signal for "Teach" is described in:
● a separate CAN document,
● libraries of ifm controllers.
An external signal can be simulated with the logic teach commands
(→ „15.13 Description of the switches "Enable CAN output"“).
The "Teach" module has the following setting:
Setting Data type Description
Index Numerical
You can use single indices or multiple indexes simultaneously (vectors).
If only a start index is specified, then the following indices are filled up to the
vector size.
15.7.2 Example for the "Teach" module
The device is mounted on the mast of a vertical drilling rig and facing vertically downward. There are 8
ROI groups set up to monitor the area around the drill hole. The output of the ROI groups is set to the
average z-value.
Description of the modules used in the example:
Module number Module Description
1 Basic function The z-values are filtered out of ROI groups 1-8 (height).
2 Teach
The input values are stored as soon as the teach signal is sent to the device on
the CAN interface. The output values always correspond to the input values of
the last teach.
3 Fixed value The fixed value "0.3" defines the tolerance.
4 Approx. equal
The reference values are compared with the current measured values taking
into account the specified tolerance.
5 Basic function
The validity of the current measured values is filtered out of ROI groups 1-8
(binary value).
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