
UK
IO-Link master
25
17 Local status and diagnostic indicators
17.1 Indicators for bus and power supply
US
UA
SF
BF
RDY
Designation
Colour
Meaning
State
Description
RDY
Green /
yellow / red
Ready
Green ON
Device ready to operate
Yellow
flashing
Firmware update is being performed
Green /
yellow
flashing
Overvoltage or undervoltage at U
S
Temperature of the device is in the critical
area�
Failure of the actuator supply U
A
and red U
S
LED:
sensor supply overload
Red ON
Rotary encoding switches are set to an
invalid/reserved position
Red OUT
Device is not ready for operation
BF
Red
Bus fault
Red ON
No communication on Profibus
Device is starting up
No baud rate detected by device
Red flashing
Device has not been configured by the
master
Device configuration does not match
Invalid parameter data received from the
master
Invalid bus address
The device is in the clear or stop state
Red OUT
No error