Meaning Of The Led Display - Siemens SIMATIC PG Operating Instructions Manual

Description of the device

1.8 Meaning of the LED display

1.8 Meaning of the LED display
The LEDs on the PC Adapter USB A2 have the following meaning:
Designation Color
ACTIVITY Green
FAULT Red
USB 5V Green
All 3 LEDs are lit -
permanently
14
Meaning
• LED off:
no application active
• LED on:
application active
• LED flickers:
Application active, PC Adapter USB A2 is in the token ring (bus activity)
• LED flashing:
Flashing function via the PG/PC panel active (twice per second)
• LED off:
No disruptions
• LED flashes fast (twice a second):
serious internal problem
• LED flashes rhythmically:
Bus disruption
• LED on:
The PC Adapter USB A2 is ready for operation.
• LED off:
The 5 V supply voltage is not available.
LED flashes slowly:
•
– The operating system is not active.
– The PC Adapter USB A2 was "thrown out".
The PC Adapter USB A2 is disabled in the Windows hardware manager.
–
The power supply of the USB interface is inadequate to operate the PC Adapter
–
USB A2.
Hardware defect:
Replace the PC Adapter USB A2 and send the defective device to your Siemens contact.
Operating Instructions, 07/2022, C79000-G8976-C293-03
PC Adapter USB A2