Siemens SINUMERIK 840D sl Commissioning Manual page 988

Service and diagnostics
5.2 Evaluation of the 7-segment display
5.2 Evaluation of the 7-segment display
Intended use
The 7-segment display is intended for PCU diagnostics in operation without a local OP
(known as "Headless mode"). If an error is detected during booting, a local display is needed
for subsequent error analysis of the connection.
Figure 5-1
The two displays have the following function:
● Segment display H1
● Segment display H2
Meaning of status codes
● During system power-up:
94
7-segment display with LEDs
Segment display H1 and the associated LED are assigned to the PCU basic software.
Status codes are output during system booting, normal operations and shutdown.
Compatibility in relation to the NCU modules is taken into account.
Segment display H2 and the associated LED are assigned to the application software.
LED H1 LED H2 7-segment
Orange Orange
Orange Off
Orange Off
Status
display
Output of After switching on the system
BIOS post
codes
After cycling the BIOS
After starting Windows
1 0 Start Windows
2 0 PCU hardware service
5 0 Network
8 0 TCU support test step 1 Wait for FTP server to start
9 0 TCU support test step 2 Wait for boot server to start for
A 0 TCU support test step 3 Wait for VNC server to start
Commissioning Manual, 02/2012, 6FC5397-1DP40-3BA0
Load device drivers needed for
the Windows start
The PCU hardware service has
been started.
Wait for network interfaces to
be ready.
TCU network boot and for TCU
hardware service to start
PCU-Basesoftware (IM8)