M2M CONTROL C660 - Technical Manual V2.00
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System LED S1 and S2
The C660 is equipped with two system LED’s which shows the status and possible errors of the
C660 unit.
The different patterns are listed in the table below. If the color of the system LED S1 is yellow, the
unit is actively communicating with the M2M CONTROL IDE (or another program, supporting the
RTCU RACP protocol).
The single yellow LED is signaling either the GSM module activity, or if all other LED’s are off,
that the C660 is in the “wait for event” low power state.
S1: System LED1 pattern overview
Pattern
Description
Fastest blinking, green
The unit is initializing, preparing to start the application.
Fast blinking, green
1
The unit has been forced into recovery mode with the use of
the system switch. The application is not executing.
500ms On / 500ms Off green
Fehler!
Textmarke nicht definiert.
The unit is executing the application program
1.5s On / 0.5s Off. green
Fehler! Textmarke
nicht definiert.
The unit is executing the application program, while
charging the internal back-up battery.
Fast blinking, red
Fehler! Textmarke nicht
definiert.
A runtime error has been detected in the program.
Use the M2M CONTROL IDE to obtain the fault log.
Alternating Fast/Slow, red
Fehler!
Textmarke nicht definiert.
The unit has lost its firmware! This can only happen if,
during a firmware upgrade, the C660 unit loses power or the
communication is lost completely. In this case, simply upload
the firmware to the unit again.
75ms On / 925ms Off, green
Execution speed is different from full-speed.
S2: System LED2 pattern overview (GSM activity and “Wait For Event”)
Pattern
Operating Status
Off
The GSM module is turned off
600 ms On / 600 ms Off
Missing SIM card or PIN code.
Network search and logon in progress.
75 ms On / 3 s Off
Logged on to the network.
75 ms On / 75 ms Off /
75 ms On / 3 s OFF
A LTE/UMTS/GSM session is active.
Flashing
Indicates LTE/UMTS/GPRS data transfer.
On
A voice or CSD session is active.
8 s OFF / 10 ms ON
(and all other LED’s OFF)
The C660 unit is in low-power “Wait For Event” state.
1
Or yellow when communicating with the M2M CONTROL IDE or another program, supporting the RTCU RACP protocol).
