Data message:
<STX>sSN LMDscandata 1 1 10959BF 0 0 347F CABC
1687D5AD
16884966 0 0 F0 0 0 ...
<STX>sSN LMDscandata 1 1 10959BF 0 0 3480 CABD
1687EFAE
168862C8 0 0 F0 0 0 ...
Time stamp:
•
Line 1:
1687D5AD
= 378000813 = 378000.813 ms
•
Line 2:
1687EFAE
= 378007470 = 378007.470 ms
•
Difference = 7 ms (corresponds to a scan data output at 150 Hz)
3.4.10
Interlaced mode
With Interlaced mode, scan data can be acquired with a fine angular resolution even at
high scanning frequencies. Recurring sequences of scans are generated.
•
Standard: Angular resolution 0.75°, response time: 7 ms
•
Dual evaluation: Angular resolution 0.375°, response time: 14 ms
•
Quadruple evaluation: Angular resolution 0.1875°, response time: 28 ms
Raw data via LMDscandata telegram
The first scan of a sequence has one scan point more than the other scans of a
sequence. This allows the customer to create a scan from a nested sequence. The
device sends a telegram after every single scan (rotation). The individual scans of a
sequence are not merged into one telegram.
Field evaluation
For the field evaluation, the device internally merges the interlaced sequence to an
internal telegram. This data telegram is then used internally to evaluate the fields. It is
not available as an output for the customer.
SOPAS ET
The
field evaluation monitor
shows the merged data of a sequence. The
ScanView
displays
the individual scans, similar to the LMDscandata telegrams sent to the customer con‐
troller. Normally, the jitter of the angular position of the scan points is detectable.
Parameterization via SOPAS ET
The interlaced mode must be activated via SOPAS ET in the default settings and added
as an additional mode in the drop-down menu.
Parameterization via telegram
The interlaced mode can be activated with the
mLMPsetscancfg
telegram. The scanning
frequency and angular resolution can be set as parameters.
If the device can only adjust to the desired combination of scanning frequency and
angular resolution in interlaced mode, then interlaced mode is activated. If this combi‐
nation is also possible without interlaced mode, it is deactivated.
Technical limits
The interlaced mode is implemented so that three modules of the device are in the
scan field when the angle switches for the next interlaced scan. This causes some of
the measuring points in the switching range to cause uneven angular steps. This jitter
varies depending on the set interlaced mode. Depending on the selected interlaced
mode, the jittering of the individual measuring points only affects a defined angular
range and not the entire scan field. The actual angle is transmitted by telegram to show
the correct position of the measuring points.
3
PRODUCT DESCRIPTION
22
O P E R A T I N G I N S T R U C T I O N S | LMS1104C-111031S01
8023051/1AZG/2021-05-10 | SICK
Subject to change without notice
