Siemens SINUMERIK 840D sl Commissioning Manual page 1089

LED H1
● During operation:
LED H1
Flashing
green
Flashing red
● During shutdown
LED H1
Flashing
red/green
PCU Base Software (IM10)
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
LED H2 7-segment
display
B 0
E 0
LED H2 7-segment
display
-- 0 0
--
1 0
2 0
3 0
6 0
LED H2 7-segment
display
-- 5 0
6.2 Evaluation of the 7-segment display
Status
-
PCU base software
Status
OK
Error:
Temperature alarm
Fan alarm
Hard disk alarm
Status
Shutdown active
Service and diagnostics
-
General fault: see Windows
"Event Viewer"
Housing or CPU temperature;
temperature above limit value
(SOM error)
Housing or CPU: Low fan
speed or fan failure (SOM
error)
S.M.A.R.T hard disk error
Failure of VNC server or VNC
server service stopped
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