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Meaning of Displays
The LEDs indicate the state of the device and have the following meaning:
Fig. 6: Connectors, displays (LEDs) and INIT button
• GOK
Device run: switched on, operating voltage OK
• System
Slow flashing (approx. 1Hz):
no connection to the terminal device
fast flashing (approx. 2Hz) :
connection with the terminal device is running (CONNECT)
• LAN
Physical connection with the network is operational
• LAN RxD Receiving data packets from the Ethernet
• LAN TxD Transmitting data packets to the Ethernet
• COM RxD Receiving data on the serial line
from the terminal device (RS232/485 or FO)
• COM TxD Transmitting data on the serial line
to the terminal device (RS232/485 or FO)
• ERROR
Error on the serial line (RS232/485 or FO)
SIEMENS AG
device operational
Page 15 of 79
Manual 7XV5655-0BB00
C53000-G1176-C175-3
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