Siemens S7-1200 - Page 30

LEDs and connectors
2.2 LEDs
CP 1243-7 LTE
30 Operating Instructions, 01/2015, C79000-G8976-C381-01
DIAG
(red / green)
NETWORK
(red / green)
CONNECT
(green)
SIGNAL
QUALITY
(yellow / green)
VPN
(green)
Meaning
Quality of the mobile wireless connection
- - - - Good network (-73 ... ≥ -51 dBm)
- - - - Medium strength network (-89 ... -74 dBm)
- - - - Weak network (-109 ... -90 dBm)
- - - - No network (≤ -110 dBm)
flashing red
- -
- Missing external power supply
VPN connections
- - - VPN connection established
- - - No VPN connection established
- - - - No VPN connection configured on the CP
Loading firmware
Loading firmware.
The "DIAG" LED flashes alternating red and
green.
flashing green
Firmware was successfully loaded.
flashing red
• Error loading firmware
or
• Internal error of the CP; remedy: Power
OFF → ON