HEIDENHAIN PROFINET - Manual (Page 18)

Installation
18
2.5 LED indication
The following table defines diagnostic indications shown by the
encoders two bi-colored LEDs.
Bus Module Meaning Cause
Off Off No power
Red Green No connection to anoth-
er device.
Criteria: No data ex-
change
- bus disconnected
- Master not availble/
switched off
Blinking * red Green Parameterization fault,
no data exchange
Criteria: Data exchange
correct, however the en-
coder did not switch to
the data exchange mode
- Slave not configured
yet or wrong configu-
ration
- Wrong station address
assigned
- Actual configuration of
the slave differs from
the nominal configura-
tion
Green Red System failure Diagnosis exists, slave in
data exchange mode
Green Green Data exchange and en-
coder functions properly
Blinking * green Blinking green Firmware upgrade in
process
Blinking * red Blinking red Failure during firmware
upgrade
*) The blinking frequency is 0.5 Hz. Minimal indication time is 3 seconds.
Table 3 Led indication