Operating Instructions Chapter 6
M4000 Adv., Adv. A/P, Area
8010797/YT72/2016-02-19 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 57
Subject to change without notice
Configurable muting functions
6.7 Partial blanking/muting changeover
I
f partial blanking is configured, this function makes it possible to switch between partial
blanking and muting. To ensure that an incorrect signal does not trigger invalid change-
over from the partial blanking function to the muting function, it is checked whether a valid
condition for changeover is present with the aid of the additional signal C1 (dynamic se-
quence) (see section “Additional signal C1” on page 49).
A changeover is only sensible if, e.g., different material heights are transported at irregular
intervals and some beams cannot remain permanently active without interrupting the ma-
terial flow. The material can be classified, e.g., using a bar-code reader that generates the
signal C1 necessary for the changeover.
In the example, the changeover between the partial blanking and muting functions is per-
formed using a bar-code reader. The different material heights are classified and saved
using bar-codes. The bar-code reader classifies the material and generates the change-
over signal C1 over a separate output as required.
If the bar-code reader detects low material , the partial blanking configured remains
active.
If the bar-code reader detects high material , it generates the additional signal C1 and
the configured changeover between partial blanking and muting is performed.
Input C1
Partial blanking/muting
Type of muting
LOW Partial blanking
HIGH Muting
Fig. 33: Principle of operation
of the changeover between
the partial blanking and
muting functions using a bar-
code reader
of muting as a function of the
input signal
(by additional signal C1, generated by a bar-code reader)
code information for low material
code information for high
material
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