Siemens SIMATIC S7-1200 Panduan Petunjuk Pengoperasian - Halaman 15

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Siemens SIMATIC S7-1200 Panduan Petunjuk Pengoperasian
Between ports of the same group, the requirements for Environment A are met. For example
between P1 and P2.
NOTICE
Please note that the direct connection of two ports on the switch or accidental connection
over several switches causes an illegal loop. Such a loop can lead to network overload and
network failures.
3.5

Displays

Displays of the CSM 1277
Power indicator 'DIAG' (green LED)
The status of the power supply is indicated by a green LED:
Status
LED lit green
LED not lit
Port status indicators 'P1' to 'P4' (green LEDs)
The status of the ports is indicated by four green LEDs. These are below the top panel. See
also Figure 4-4
Status
Port 1 through 4 LED lit
Port 1 through 4 LED flashing
Ports 1 through 4 LEDs flashing / in
sequence
Compact Switch Module CSM 1277
Operating Instructions, V. 1.20, A2B00079397B
Meaning
Power supply is connected
Power supply is not connected or the applied voltage is too low.
Refer to the Note in Section 4.7
Meaning
Existing connection via port to Industrial Ethernet (LINK status)
Port is sending / receiving via Industrial Ethernet
Test phase during power on
Product characteristics
3.5 Displays
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