Siemens SIMATIC NET TeleControl S7-1200 CP 1243-1 Operating Instructions Manual page 23

Display of the basic statuses of the CP ("DIAG" LED)
Table 2- 4
Basic statuses of the CP
Display of the operating and communications statuses
The LEDs indicate the operating and communications status of the module according to the
following scheme:
Table 2- 5 Display of the operating and communications statuses
DIAG - LINK
(red / green) (green)
Module startup (STOP → RUN) or error statuses
red
-
flashing red
-
green
-
red
-
flashing red
CP 1243-1
Operating Instructions, 12/2016, C79000-G8976-C365-02
Display of the basic statuses of the CP
DIAG Meaning
(red / green) (if more than one point listed: alternative meaning)
•
•
Running (RUN) without serious error
green
•
•
flashing green
•
•
flashing red
•
Error loading firmware
flashing red-green
CONNECT
(green)
-
Power OFF
Incorrect startup
Partner not connected
Firmware loaded successfully
Starting up
Module fault
Invalid STEP 7 project data
VPN SERVICE
(green) (green)
- -
- -
- -
LEDs and connectors
Meaning
(if more than one point listed: alternative
meaning)
Power OFF
Startup - phase 1
Startup - phase 2
Running (RUN) without serious error
Incorrect startup
Invalid STEP 7 project data
Missing STEP 7 project data
2.2 LEDs
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