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4
Interface adapter USM21A
LEDs on the interface adapter
Manual – Interface Adapter USM21A
9
4.3.1
"RS485" LED
LED
Meaning
Off
No driver is activated for the interface adapter.
Green
Driver activated, but no communication yet between the engineering
PC and the unit.
Possible causes for the interface adapter remaining in this status:
•
The connection cable to the unit is not connected properly or is
defective.
•
The baud rate setting on the unit is incorrect.
•
The device has no operating voltage.
•
The unit address is outside the address range set for the unit in
the MOVITOOLS
®
MotionStudio project.
Green, flicker-
ing
Active RS485 communication. Data is being transfered between the
engineering PC and the unit.
4.3.2
"CAN" LED
LED
Meaning
Off
No driver is activated for the interface adapter.
Blue
Driver activated, but no communication yet between the engineering
PC and the unit.
Possible causes for the interface adapter remaining in this status:
•
The connection cable to the unit is not connected properly or is
defective.
•
The baud rate setting on the unit is incorrect.
•
The device has no operating voltage.
•
The unit address is outside the address range set for the unit in
the MOVITOOLS
®
MotionStudio project.
Blue, flickering Active CAN bus communication. Data is being transfered between
the engineering PC and the unit.
4.3.3
"Error" LED
LED
Meaning
Off
Standard operating state.
Red
There was an error in the interface adapter.
28516273/EN – 11/2018