M2M Control CX660 Technical Manual V1.02
Advanced Automotive M2MI/IoT Gateway
Page 28 of 44
System LED S1 and S2
The CX660 is equipped with two system LED’s, which shows the status and possible errors of the
device.
The different patterns are listed in the table below. If the color of the system LED S1 is yellow, the
device is actively communicating with the M2M CONTROL IDE (or another program, supporting
the RTCU RACP protocol).
The LED S2 is signaling either the cellular module activity or if all other LED’s are off, that the
CX660 is in the “wait for event” low power state.
S1: System LED1 pattern overview
Pattern
Description
Fastest blinking, green
The device is initializing, preparing to start the application.
Fast blinking, green
S2 On, green
The device is installing an update. Depending on the kind of
update, it may take some time. The progress can also be
observed on the display.
Fast blinking, green
1
The device has been forced into recovery mode with the use
of the system switch. The application is not executing.
500ms On / 500ms Off green
The device is executing the application program
1.5s On / 0.5s Off. green
The device is executing the application program, while
charging the internal back-up battery.
Fast blinking, red
A runtime error has been detected in the program.
Use the M2M CONTROL IDE to obtain the fault log.
Alternating Fast/Slow, red
The device has lost its firmware! This can only happen if,
during a firmware upgrade, the RTCU device loses power or
the communication is lost completely. In this case, simply
upload the firmware to the device again.
75ms On / 925ms Off, green
Execution speed is different from full-speed.
On yellow (and all other LEDs
OFF)
The device is booting, initializing the system
3 Or yellow when communicating with the M2M Control IDE or another program, supporting the RTCU RACP protocol).