Siemens SINUMERIK 840DE SL

Service and diagnostics
5.2 Evaluation of the 7-segment display
PCU-Basesoftware (IM8)
124 Commissioning Manual, 02/2014, 6FC5397-1DP40-4BA0
● During operation:
LED H1
LED H2
7-segment
display
Status
Flashing
green
-- 0 0 OK
Flashing red
--
Error:
1 0 Temperature alarm Housing or CPU temperature;
temperature above limit value
(SOM error)
2 0 Fan alarm Housing or CPU: Low fan
speed or fan failure (SOM
error)
3
0
Hard disk alarm
S.M.A.R.T hard disk error
6 0 Failure of VNC server or VNC
server service stopped
● During shutdown
LED H1
LED H2
7-segment
display
Status
Flashing
red/green
-- 5 0 Shutdown active