… …
23
<STX>sSN LMDscandata 1 0 10736D01 0 0 1CD6
56BB
86BE275B 86C01C1C F0 0 0 0
70
3E8 ...
24
<STX>sSN LMDscandata 1 0 10736D01 0 0 1CD7
56BB
86BE275B 86C01F29 F0 0 0 0
ED
3E8 ...
Scan (scan counter):
•
Lines 1 to 24:
56BB
= 22203
•
The scan number is a consecutive number. All 24 layers of a scan have the same
scan number.
Layer (time stamp):
•
Lines 1 to 6:
86BS0263
= 2260533859 = 2260533.859 ms
•
Lines 7, 8 (… to 12):
86BD640B
= 2260558859 = 2260558.859 ms
•
The time stamp is a time specified in milliseconds (start of measurement of a
layer since switching on the device). All 6 layers of a scan have the same time
stamp. The difference between 2 consecutive planes of a scan is 25 ms.
Layer (layer angle):
•
Line 1:
F5B2
= -2638 (corresponds to -13.19°) = Position 24
•
Line 2:
F62F
= -2513 (corresponds to -12.565°) = Position 23
•
Line 23:
70
= 112 (corresponds to 0.56°) = Position 2
•
Line 24:
ED
= 237 (corresponds to 1.185) = Position 1
•
The layer address is an angle specified in degrees (horizontal angle, physical). The
difference between 2 consecutive layers of a scan is 0.625°.
3.5.10
RSSI values
RSSI (Received Signal Strength Indicator) is the measure of the signal strength that the
device receives. This value is determined for each measurement and has a logarithmic,
arbitrary unit.
The RSSI values have a resolution of 16 bits with whole-number values between 1 and
65535, where 1 stands for the weakest signal and 65534 for the strongest signal (e.g.
with one reflector).
A value of 65535 means “dazzled”. The value 0 (zero) means that the received energy
was too low to produce a valid RSSI value. A valid distance measurement has at least
an RSSI of 1.
If the RSSI value is 0, then no distance measurement is possible. There can be two rea‐
sons for this:
•
The target object lies outside the sensing range.
•
The target object has an extremely low remission.
Please note that white paper can have very similar values as a reflector at a short dis‐
tance.
The RSSI values can vary slightly among different devices and during the service life of
the device.
3
PRODUCT DESCRIPTION
20
O P E R A T I N G I N S T R U C T I O N S | MRS6000
8022069/114M/2019-07-17 | SICK
Subject to change without notice
