Working Modes of GPRS Module

Working modes of gsm moduleData Passthrough Mode, Serial Command Mode, AT Command Mode and Httpd Client Mode.

Data Passthrough Mode

The basic function of data transparent mode is to forward serial data to the public network server that connects with GPRS module in a bidirectional way. It is to realize data exchange between user’s serial device and the public network server.

Serial Command Mode

When GPRS module works in serial command mode,users need to use command format provided by USR IOT to design command content.When GPRS module receives serial data,it will analyze the data and operate according to the analyzed data.

AT Command Mode

GPRS module can send SMS, establish network connection, and transfer data in the AT command mode.

Httpd Client Mode

In Httpd Client mode, GPRS module will connect to the WEB server set by user in the way of TCP Client mode, and send PHP order code sent by user to WEB server in the format of HTTP GET. In this way to operate WEB server data and return the results, it is convenient for PHP programmers to make embedded web application.

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