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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) .
