Siemens S7-1200 TELECONTROL Operating Instructions Manual page 26

LEDs and connectors
2.2 LEDs
DIAG NETWORK
(red / green) (red / green)
flashing
green
flashing
green
TeleServiceconnection
-
- -
Quality of the mobile wireless connection
- -
- -
- -
- -
-
flashing red
Loading firmware
flashing
green
flashing red
26
CONNECT SIGNAL
QUALITY
(green)
(yellow /
green)
-
-
- -
- -
-
-
-
-
-
TELE- Meaning
SERVICE
(green)
- Telecontrol configuration exists, partner not
reachable, CPU in RUN mode
- Telecontrol configuration exists, partner not
reachable, CPU in STOP mode
TeleService connection established
No TeleService connection established
- Good network (-73 ... ≥ -51 dBm)
- Medium strength network (-89 ... -74 dBm)
- Weak network (-109 ... -90 dBm)
- No network (≤ -110 dBm)
- Missing external power supply
Loading firmware.
The "DIAG" LED flashes alternating red and
green.
Firmware was successfully loaded.
Error loading firmware
•
or
Internal error of the CP; remedy: Power
•
OFF → ON
Operating Instructions, 10/2016, C79000-G8976-C311-02
CP 1242-7 GPRS V2