4. INT101 Operation

The INT101 has no buttons or settings: the BMS runs it. Its four LEDs (connector 5) show whether it is powered, whether the GNSS module has a position fix and what the modem is doing.

4.1 Power On and Off

The BMS switches the INT101 on and off through connector 1, and the power LED shows when the board is powered. The modem and the GNSS module start as soon as the board is powered; when the BMS starts the cloud connection it first switches the INT101 off for a second, so both start from a clean state. A second control line lets the BMS switch the modem alone off and on again, for example to restart it.

After the INT101 has been off, the GNSS module needs some time before its first position fix, typically 15 to 35 s under open sky and longer near buildings or indoors; the GNSS fix LED starts blinking then.

4.2 Status LEDs

The four LEDs sit in a row on the top side, from the left: power, GNSS fix, network and transmit (Fig.2.1, connector 5). The transmit LED shows a transmit signal of the modem that the current BMS firmware does not switch on, so it normally stays off; it says nothing about the cloud connection.

Fig.4.2.1: Status LEDs

States of the four INT101 LEDs: power on while the INT101 is powered, GNSS fix blinking once a second with a position fix, network blinking while the modem is on, transmit normally off

Table.4.2.1: Network LED

Network LED	Modem State
Off	The modem is off
Short flash about every 0.86 s (64 ms on, 800 ms off)	The modem searches for the network
Short flash about every 2.06 s (64 ms on, 2000 ms off)	The modem is registered on the network

Fig.4.2.2: Network LED

Timing of the network LED over six seconds: no flash while the modem is off, a 64 ms flash about every 0.86 s while the modem searches for the network, and a 64 ms flash about every 2.06 s once it is registered

Tip

If the network LED keeps flashing about every 0.86 s, the modem finds no network it may use: check the GSM antenna on connector 2, the SIM card and that a 2G network is available at the place.

4.3 In LiMon™

The Connection screen of LiMon™ shows the cloud connection ID of the BMS, which is the IMEI of the INT101 modem, and the GPS location status; it reads No GPS Signal until the GNSS module has a position fix.

Fig.4.3.1: Remote Connection Details in LiMon™

The Remote Connection Details card of the LiMon Connection screen: Connection ID, the IMEI of the INT101 modem (partly masked here), and Location Stat reading No GPS Signal