DAS -

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High precise industrial laser distance sensor

Non-target(reflector) for maximum 20 meters

Analog+digital output and alarm function

High strength aluminum compact housing

Compact and high reliable industrial laser distance meter DLD-420 out distance data as electrical signal from measured distance by emitting visible laser. Maximum measurable distance with a target(reflector) is 80 meters and without a target is 20 meters.

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General Specifications

Item	Specification	Remark
Distance	0 ... 80m
Accuracy	+/-1mm
Laser Class	Class 2 (IEC60825:2007)
Laser Type	635nm
Laser Output	<1mW
Laser Diameter	6mm @10m
Output	4...20mA + RS485
Power Source	10 ... 30VDC
Current Drain	<50mA @12VDC
Operating Temp.	-10 ... +50 celsius
Waterproof	IP65
Dimensions	W65 x H40 x D65mm
Weight	150g

Laser Class

Dimensions is without mounting and tube.

Wiring Connections

The image as below shows pinmap of the gland.

Image	No.	Description
	1	Output+
	2	V+
	3	RS485 A (T+)
	4	RS485 B (T-)
	5	NC
	6	GND (COM)

Analog Data Descriptions

Distance Range = max. distance - min. distance
Output mA Range = 20mA - 4mA

e.g. Distance range 0...10m, Output 12mA,

RS485 Protocol

Communication Standards

Baudrate	115,200	Data Bits	8
Stop Bits	1	Parity	None

Baudrate in the table is default value.

Data Format (ASCII)

ID has 2 digits.
Value has 1...5 various digits and mm of unit.

Commands

e.g. <1 RUN>+CR+LF

<0 ID>
ID checking

<@ ID_SET #>
Set ID from @ to #

<@ RUN>
Measure data once.

<@ RUNNING>
Measure data continuously.

<@ STOP>
Stop measuring.

<@ LENGTH_MIN #>
Set minimum distance to #. (unit is millimeter.)
Minimum distance can be set within 1...79999 and cannot exceed maximum distance.
This command affects only for analog output.(RS485 output is fixed in full-scale.)

<@ LENGTH_MAX #>
Set maximum distance to #.
Maximum distance can be set within 2...80000 and cannot be less than minimum distance.

<@ INTERVAL #>
Set out-rate to # within 500...30000. (unit is millisecond.)

<@ CAL 1234>
Set current measured distance to zero.
(1234 is the number of protection.)

<@ BAUD_RATE #>
Set baudrate to #.
# can be 115200 / 57600 / 38400 / 19200 / 9600 / 4800.

<@ OUTPUT_VIEW #>
Set output data format to # within 0...2 as below.

0	[ID=XX VALUE=nnnnn]
1	[# nnnnn]
2	[VALUE=nnnnn]

<@ ON_RUNNING #>
Set function of automatically start measuring when power is on.

0	Manual start
1	Automatic start

<@ SAVE 1234>
Save ID and configurations. ID and any configurations not saved will be initialized when shut power off.
(1234 is the number of protection.)

<@ FACTORY_RESET 1234>
Factory reset. (1234 is the number of protection.)

Dimensions

Refer attached drawings for detail dimensions and size.

NOTES

Keep lens clean as DLD-420 is a device emitting visible laser.
Do not look laser directly or aim a person.
Do not look laser directly with any optical instruments.
RS485 protocol may cause delay or crash by internal processing time and other reasons. If commanding is not in real-time, repeat sending the command.
12 months warranty is provided after released. Warranty provided only in case of using for designed purpose correctly.
Specifications, design and components can be changed without prior notice to improve its performances.