RSSI Received Signal Strength Indicator (RSSI): Indicator of the strength
of t
he received signal. A higher value corresponds to a better
reception. There is no universal relationship between a physical
quantity and a specified RSSI.
Safety function Function of a machine whose failure can result in an immediate
incr
ease of the risk(s). (ISO 12100)
Safety output A safety output provides safety-related information.
Safety outputs are OSSDs, for example, or safety-related informa‐
tion on a safety-related network.
Scan cycle time The scan cycle time is the time the sensor needs for a complete
sc
an of its detection area.
Example: Time required by the mirror of a safety laser scanner for
one rotation.
Scan plane The scan plane is the geometric plane in which the 2D laser scan‐
ner c
aptures its environment. A scan layer is created by deflecting
a laser beam using a rotating mirror. In practice, the area scanned
is not precisely flat.
Deviations from the ideal plane are specified as a conical error.
Deviations from the ideal alignment are specified as a tilt error.
SIL Safety integrity level
SILCL SILCL: SIL claim limit. Designation in older versions of IEC62061.
R
eplaced by SIL in versions from 2021.
Static control input A static control input is a dual-channel control input, which evalu‐
ates the status of every channel as the value 0 or 1. The signal
states of one or more static control inputs give a unique signal
pattern. This signal pattern activates a monitoring case.
Tilt error The tilt error indicates how strongly tilted the scan plane is to
t
he ideal alignment within the specific device. The tilt error can
be compensated for in many cases by mounting the sensor at a
compensating inclination.
Warning field The warning field monitors larger areas than the protective field.
Simple switching functions can be triggered with the warning field,
e.g. a warning light or an acoustic signal can be triggered if a
person approaches, even before the person enters the protective
field.
The warning field must not be used for safety applications.
17 GLOSSARY
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O P E R A T I N G I N S T R U C T I O N S | microScan3 – EtherNet/IP™ 8020200/1NTM/2024-06-03 | SICK
Subject to change without notice
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