Network Status Indicate Interface; Interface Status Description - Fibocom NL668-LA Series Hardware Manual

5.2 Network Status Indicate Interface

NL668-LA series module provides three network status indicate pins. Pin 5 is network status indicator by
default, AT commands AT+LEDCFG can switch to pin6 or pin61, table 5-4 is the pin definition.
Table 5-4 Network status indicator
PIN Name
NET_MODE
NET_STATUS
STATUS

5.2.1 Interface Status Description

Network status indicate pins are used to driven indicate light and describe module's network status,
NL668-LA series module network indicates light work status description as follow table:
Table 5-5 Network indicator light work status
Module Network Indicator
Mode
Pin Status
1 600ms High/600ms Low
2 3000ms High/75ms Low
3 75ms High/75ms Low
4 Low
5 High
NL668-LA series module network indicates light reference design circuits shown as follows:
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FIBOCOM NL668-LA Series Hardware Guide
I/O PIN No.
O 5
O 6
O 61
Indicator Light Flash/Off
Status
Flash
600ms on/600ms off
Slow flash
3000ms on/75ms off
Speed flash
75ms on/75ms off
Off
On
Description
Network status indicator (by default)
Network status indicator
Network status indicator
Description
No SIM card
Request SIM PIN
Registering network (T<15s)
Register network failed
Standby
Data link established
Voice call
Sleep
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