Description
3.6 Installation
SIMATIC Rack PC 847B
22
Operating Instructions, 06/2008, A5E02203168-01
3.6.4
Status displays
Front status displays
Display
Meaning
LEDs
Description
OFF
isolated from mains
YELLOW
Standby (hibernating)
POWER
PC status display
GREEN
PC in operation
OFF
no access
HDD
Display for hard disk
access
GREEN
Access
OFF
•
No connection
•
No data traffic
ETHERNET 1 *
ETHERNET status
display
GREEN
Data traffic
OFF
•
No connection
•
No data traffic
ETHERNET 2 *
ETHERNET status
display
GREEN
Data traffic
OFF
•
No connection
•
No data traffic
PROFIBUS/MPI
(optional)
Display of the
communication status to
S7 or PROFIBUS
GREEN
Data traffic