Signal Quality; Process Data - Balluff BES M18EH1-L01C80B-S04G-L04 Konfigurationsanleitung

BES M08EH1-L01C20B-S04G-L04 /BES M12E_1-L01C_0_-S04G-L04 /
BES M18EH1-L01C_ _ _-S04G-L04
Inductive sensors
4
Primary Device Functions (continued)
4.4

Signal Quality

4.4.1 Description
The signal quality is specified in percent steps as a value
between 0 and 100%. If the signal quality cannot be
provided, a substitute value of 0xFF (255) is output. The
threshold value for the monitoring function can be set and
is used to define two states of the signal quality. The signal
quality is considered to be good at or above the threshold
value; the signal quality is considered to be bad below the
threshold value. A state change from good to bad signal
quality triggers the Low Signal Quality Level IO-Link event.
The output of the current signal quality can provide
support both when setting up as well as during predictive
maintenance. When setting up, the location, the orientation
and the environmental conditions can be adapted to
achieve a satisfactory signal quality level. The signal quality
is checked regularly.
4.4.2 Mathematics/Algorithm
The noise in the system is evaluated. This is performed
with the measurement shut off in order to avoid taking the
influence of the damping material into account.
4.4.3

Process Data

Object ID Name
0x0020 (32) Current Signal Quality
0x0021 (33) Signal Quality Bad
Tab. 4-22: Signal quality – process data
Also see section Process Data Profiles on page 9.
4.4.4 ISDU
Name
Low Signal Quality
Threshold
Signal Quality
Current Signal Quality
Signal Quality Bad
Tab. 4-23: Signal quality – ISDU
38 english
Description
Output of the current signal quality in percent
steps from 0% to 100%.
Output of the current signal quality evaluation;
TRUE means a signal quality below the threshold
value, FALSE means a signal quality equal to or
above the threshold value.
Index Subindex
0x00CE (206) 0
0x00CF (207) 0
1
2
In addition, the monitoring of the signal quality offers an
immediate response in the event of a critical failure. This
reaction is triggered if the signal quality drops below the
adjustable threshold value and gives the all clear if a
satisfactory signal quality level is once again achieved. The
signal state is also indicated by an orange LED that
illuminates if the signal quality is below the threshold value.
The function can be deactivated by setting the threshold
value to zero.
Access Length Data Type
R/W 1 byte UINT8
R 2 bytes
R 1 byte UINT8
R 1 bit BOOL
Direction
Input
Input
Data Storage Default
Yes 0
n/a
n/a –
n/a –