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1
Library Overview
This library enables you to send any messages (e.g., messages regarding the plant
status) by SMS using the MD720-3 GSM modem to a GSM-capable mobile
terminal and receive messages from this terminal.
This document contains the description of the library available for download.
The present documentation furthermore illustrates possible applications and the
included step-by-step instructions help you to integrate the library into your STEP 7
project.
1.1
User Scenarios
Display
The figure below shows all of the possible application cases of the library in the
various SIMATIC S7 controllers with the appropriate serial communication
modules/processors.
Figure 1-1
ET 200S + 1SI
S7-300 + CP34x
Sending and Receiving SMS Messages with MD720-3
Entry ID: 25545680,
V1.0,
ET 200SP + CP PtP
S7-1500 + CM PtP
S7-400 + CP441-2
12/2013
!
MD720-3
GSM device
4
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