![background image](http://html1.mh-extra.com/html/sick/8026014/8026014_operating-instructions-manual_1264687047.webp)
Table 18: Diagnostic classes and display behavior
Diagnostic class
LED
About
1 Hz
Warning
2 Hz
Error
8 Hz
The states are represented as follows:
NOTE
All messages are relevant only to the recipient, with the exception of
Test input enable
,
Power on
and
Hardware error
.
Table 19: LED display depending on device status
Message
Details
Class
Yellow LED
Green LED
Power on
-
About
Not relevant On
Presence / no pres‐
ence
Independent of the pin configu‐
ration
About
Off ≥ 1
beam inter‐
rupted
On = no
beam inter‐
rupted
On
Busy
Device startup, Teach-in, Fac‐
tory reset, Reconfiguration cross
beam, IO-Link data storage
download
About
1 Hz; 50%
duty
On
Find me
In the FindMe function, both
LEDs on the receiver flash.
About
1 Hz; 50%
duty
1 Hz; 50%
duty
IO-Link communica‐
tion
-
About
Not relevant 1 Hz; 90%
on; 10% off
Test input enable
If a HIGH signal is applied to
sender pin 2, the sender LEDs
are deactivated (sender only).
About
1 Hz; 50%
duty
On
Quality of run (QoR)
alarm warning
LED only flashes if no object is
in the beam path
Warn‐
ing
2 Hz; 50%
duty
On
Temperature or oper‐
ating hours alarm
-
Warn‐
ing
2 Hz; 50%
duty
On
Alignment aid
If alignment aid is activated via
index 69 or SOPAS.
Warn‐
ing
2 Hz; 50%
duty
On
Teach-in error
≤ 5 seconds active. According
to a
power cycle
, a
Teach-in error
becomes a
Teach-in necessary
Error
8 Hz; 50%
duty
On
Short circuit error
-
Error
8 Hz; 50%
duty
On
Sync error
If first and last beam interrupted
at the same time
Error
8 Hz; 50%
duty
On
Hardware error
-
Error
Off
Off
8.4
Sync error
To ensure reliable detection with the specified resolution, only one beam at a time is
active on the light grid. The beams are clocked through in the µs range.
To ensure that the sender beam and the receiver beam adjacent on the same plane are
always active, the beams must be synchronized with each other.
DIAGNOSTICS AND TROUBLESHOOTING
8
8026014/2021-06-10 | SICK
O P E R A T I N G I N S T R U C T I O N S | SLG-2
47
Subject to change without notice