Siemens PPU 26x.3 series Manual page 126

Connectable components
7.3 MCP Interface PN
Display
①
②
③
④
⑤
⑥
⑦
Figure 7-11
LED displays
Name Function
H500 POWER OK (green)
126
Type plate
Terminal strips / connectors for operator controls
Diagnostics LED
PROFINET interface X2 (Industrial Ethernet 100 Mbit/s)
PROFINET interface X3 (Industrial Ethernet 100 Mbit/s)
Grounding screw M5 for potential equalization connection
24 VDC power supply X1 (with screw connection)
View of MCP Interface PN
Status
Lit
Not lit
Meaning
All internal voltages are in the setpoint range.
At least one of the generated voltages has fallen below its setpoint;
a reset will be initiated.
PPU and components
Manual, 10/2015, 6FC5397-2DP40-5BA3