2017/02
Multiplex operation
In this operating mode the mutual interference of adjacent sensors can be reliably avoided. For this purpose, up to 4 sensors of the same
type are wired together in a network according to the following diagram.
The devices operate in multiplex operation with a
cyclically time-delayed transmission pulse
and are switched to a passive state
outside of the active phase, whereby the states of the outputs are frozen until the next active phase. The response time of the individual
sensor in the network is therefore extended with respect to the response time of a single sensor as follows:
Response time in the network = (Response time of sensor * n) + 25ms
(n = number of sensors in the network)
Multiplex operation wiring schematic
Resetting to factory settings
The sensor can be reset to the factory setting (1 switching point at 400mm or 1600mm, rising characteristic curve with spread over the
entire scanning range).
Resetting to factory settings
1. When switching on the supply voltage (during power-on),
press the
teach button
for
> 5s
.
2. Release the button
. The
green, yellow and blue LEDs
flash
alternately and very quickly
for a brief time.
The sensor was reset to the factory setting:
switching output
: 1
switching point at 400mm or 1600mm (1-point teach, static),
analog output
: 4 … 20mA or 0 … 10V corresponds to an object distance of 50 … 400 mm or 150 … 1600 mm, respectively.
Sensor 2
Sensor 1
Sensor n
GND
NOTE
Please make certain that the wiring is performed according to the connection diagram.
Sync/MUX
pin 5 on all sensors in the network must be connected to one another.
To activate multiplex operation, the
Sync/MUX cable must be connected to GND for 5 s
when applying the operating voltage
.
Generation of the multiplex signal for all sensors in the network occurs automatically.
Activating multiplex operation:
to GND for 5s during power-on
.
DMU318…W
