SICK LMS4000

1
2
3
4
5
Figure 5: Continuous output of measured values
1
Start telegram
2
Start transmission of measured values
3
Output measured-value telegrams
4
Stop telegram
5
Stop output of measured values
3.5.3.2 Triggered output of measured values
During triggered measurement, the start and end of the measurement are determined
by a reading gate.
First, the trigger source is selected via the laser control settings, "Laser control",
page 18.
After this, measured values are initially requested with the sEN LMDscandata 1
telegram, "Telegram structure", page 54, in the same way as for the continuous out‐
put of measured values.
Measured values are only output if the laser is switched on (to open the reading gate). If
the reading gate is closed, the laser will switch off, thereby terminating the measure‐
ment process and the output of measured values.
A software trigger or the digital inputs input 1 or 2 can be used for triggering purposes.
3.5.3.3 Connecting the incremental encoder
If the device is mounted for mobile use or if the objects to be measured are in motion,
the application will usually also need position data to further process the measured val‐
ues.
Encoders can be connected for this purpose. The encoder data is then available with
the other measured values in a single scan and at the same interface. A volume,
for example, can be calculated by evaluating the measurement data and position data
(encoder ticks). The input frequency of the encoder signal must not exceed 50 kHz.
PRODUCT DESCRIPTION 3
8023198/16S6/2020-01-24 | SICK O P E R A T I N G I N S T R U C T I O N S | LMS4000
17
Subject to change without notice