Led-Diagnosis - Beckhoff CU8870-0000 Manual

3.5 LED-Diagnosis

LED Mapping Status
P10 Power supply off
lights green
P20 CF LOCK off
lights green
P21 ACCESS off
flashes
CU8870-0000
Meaning
no power supply connected (see chapter power supply for details)
Device is operational
no CF card inserted
CF-card is inserted and electrical connected
no access on the media
Read / write access on the media
Installation
10