Siemens SIMATIC IPC547D - Page 19

Overview
1.2 Design of the device
SIMATIC IPC547D
Operating Instructions, 06/2011, A5E03473780-01
19
Rear status displays
The following figure shows the location of the LEDs on the Ethernet interface.
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Display Meaning LED Description
OFF
 No cable connected
 Cable disabled
 Interface disabled
Green LED
Link status display
GREEN Active cable connected
OFF
 No cable connected
 Cable disabled
 Interface disabled
 No activity
Ethernet LAN 1, 2
1
Yellow LED
Activity status display
YELLOW Data transfer active
1
To identify them clearly, the LAN interfaces are numbered on the housing. The
numbering by the operating system may deviate from this.
The following figure shows the location of the "Power" LEDs on a device with redundant
power supply.
The LED has the following meaning:
 Lit green: Power supply module is in operation
When there is no redundancy, an acoustic signal
sounds continuously. Redundancy is in effect when
both power supply units are in operation.
 Not lit: Power supply module is out of service