3.2 LED Indicator

Here the variable statuses of the wireless interface state indicating LEDs are described. The first LED from the right (when viewed from the front, see the figure below) indicates the WWAN module state. This LED can have two functions: the basic function is to signal terminal connection to the WWAN network in the standalone mode and to the SmartCom Server in the TCP client mode. Use the scchled1 parameter to select whether the LED shall indicate the GSM or ETH interface state. The states are then identical.

Front Panel with LED Indicators

The LED states below correspond to both the modes.

  1. NO LIGHT – POWER OFF – indicates that the 12 V GPRS module power supply is disconnected or malfunctioning or that the fuse is defective.
  2. THREE QUICK FLASHES – START or RESTART – indicates the device start/restart. This state must always be indicated upon power supply connection.
  3. SLOW FLASHING – INITIALISATION – indicates that the module is being connected to the provider, IP network and SmartCom Server. If this happens when the ETH activity is being monitored, the network is unavailable. The link is missing, the cable is disconnected or interrupted between the device and the nearest switch.
  4. VERY QUICK FLASHING – ERROR – indicates an error state: wrong PIN, no SIM card, the count of remaining PIN entering attempts is lower than three.
  5. ILLUMINATED – OK – 2N® SmartCom PRO is connected to the provider, IP address is assigned, server connection is established. A quick flash indicates data transmission in this state.

The other two LEDs to the left indicate the extending module states. Their function is always the same regardless of the module type: WM-Bus of two different frequencies, ZigBee and, prospectively, KNX.

The LED states are as follows:

  1. NO LIGHT – POWER OFF – no module is mounted.
  2. SLOW FLASHING – INITIALISATION – the module starts and logs in (ZigBee). This state is visible upon power up only.
  3. ILLUMINATED – OK – the module is ready, waiting for incoming data or command sending.
  4. QUICK FLASHING – DATA – data transmission is in progress. A short message makes the LED flash very shortly.