5. I/O TRIGGERED AT COMMAND

This feature making use of the Fargo Maestro Input/Output port as a sensor. If the signal to the port match the pre-defined condition a stored AT command will be executed.

User can use AT+IOAT command to set the condition and store AT command to be executed.

5.1 Description of the operation

I/O port

Wiring Diagram :

1.When the I/O port is connected to high 3V signal, Switch closed : logic level high

Switch opened : logic level low.

2.The switch can be placed as a triggering device, e.g. to detect door opening.

3.According to the setting of AT+IOAT command, the stored AT command will be executed either I/O signal from high to low, or from low to high :

When set as low-to-high triggering:

Start counting time when a low to high signal changed detected

when period of high signal reach the Threshold value the AT command will be executed

I/O port volatge

time = T

Confidential, the whole present document is the sole property of Fargo Telecom (Asia) Ltd.

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