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Operation 22 (28)
7.6 LEDs
7.6.1 PLC LED
The PLC LED indicates the status of the PLC.
LED Description
Off No program loaded, PLC not running
Slowly blinking (0.5 Hz) Program loaded, PLC not running
On Program loaded, PLC running
Fast blinking (4 Hz) Task cycle of PLC violated (e.g. cycle time too short in relation to complexity of pro-
gram, check duty cycle of PLC in status bar of editor), see
WEB-PLC-Help — Status
LEDs for more information
7.6.2 Portal LED
The IXXAT SG Gateway supports the use of the com.tom portal. The Portal LED indicates the
status of the portal connection. For further information see
WEB-PLC-Help — Status LEDs .
7.6.3 GSM LED
The GSM LED indicates the status of the cellular modem connection.
LED Description
Off Connection not enabled
Slowly blinking (0.5 Hz) Connection is being established.
On Connection is established.
7.6.4 LED 4
If WiFi functionality is available (optional), the LED 4 indicates the status of the WLAN
connection.
LED Description
Off WLAN connection not enabled.
Slowly blinking (0.5 Hz) Connection is being established.
On Connection is established.
Fast blinking (4 Hz) Fatal error, cellular modem driver no longer tries to establish a connection.
7.6.5 Power LED
LED Description
Off Device not supplied with power
On Device is supplied with power
SG Gateway User Manual 4.04.0450.20000 1.3