10
2.6. Modem status display
LED is used to indicate the connection status. This function can be controlling by a corresponding
AT-command (AT^SSYNC=1 — LED mode on; AT^SSYNC=0 — LED mode off). By default, AT^SSYNC=1.
Table 2.6.1:
Connection status LED (green)
LED mode
Conditional indication
display
Operation mode
Turned off
○
Modem is turned off or is in the emergency
status, power saving mode, alarm mode
600ms on / 600ms off
●●●●●●
○○○○○○
Modem is not logged to the network
75ms on / 3s off
●
○○○○○○○○○
...
○
Modem is logged to the network
75ms on / 75ms off /
75ms on / 3s off
●
○
●
○○○○○○○
...
○
GPRS connection is activated
500ms on / 50ms off
●●●●●
○
Data transfer in progress
250ms on / 10s off
●●●
○○○○○○○
...
○
Sleep mode
250ms on / 250ms off
●●●
○○○
Programming mode, menu mode
Permanently turned on
●
Voice call, CSD
Table 2.6.2:
Emergency LED (red)
LED mode
Conditional indication
display
Operation mode
Permanently turned on
●
Invalid input voltage
0.5s on / 0.5s off
●●
○○
Invalid module power supply
0.25s on / 0.25s off / 0.25s on /
1s off
●
○
●
○○○○
GSM module has not launched
Summary of Contents for MC52i-485GI
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