Rs422; Controller Leds - MICRO-EPSILON confocalDT 2421 Quick Manual

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Controller LEDs

RS422

- Differential signals according to EIA-422, electrically isolated
from the supply voltage.
- Receiver Rx with 120 Ohm internal terminating resistor.
Terminate the transmitter input Tx on the evaluation unit (re-
ceiver) with 90 ... 120 Ohm.
Use a shielded cable with twisted wires.
Cable length less than 30 m.
Connect the ground connections.
i
The pin assignment for the 9-pin D-sub socket is not stan-
dardized.
Controller LEDs
Power on
Status
Intensity
Sensor 1/2
Range
Sensor 1/2
confocalDT 2421 / 2422
Green
Operating voltage present
Off
No error
Flashing red
Error during processing
If the EtherCAT interface is active, refer to the EtherCAT guidelines for the meaning of the LEDs.
Flashing red
Dark signal acquisition in progress
Red
Signal saturated
Yellow
Signal too low
Green
Signal OK
Flashing red
Dark signal acquisition in progress
Red
No target present, outside of measuring range
Yellow
Target close to mid of measuring range
Green
Target within the measuring range
Pin
Name
Signal
3
RX -
Receiver -
2
RX +
Receiver +
5
GND422 Ground RS422
9
TX +
Transmitter +
1
TX -
Transmitter -
Housing
Shield
Cable shield
Pin assignment for 9-pin D-Sub socket (RS422)
Page 8

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