Maestro 100 Lite GMS/GPRS Modem


The following documentation gives an example, how to build up a communication between TwinCAT and a Maestro100Lite-Modem. The attached example-program consists of four function-blocks for:
  • Logging in to a SIM-card with the PIN-number
  • sending a SMS
  • reading a SMS from the SIM-card
  • deleting a SMS from the SIM-card
Introduction 1:

The commands sent to the modem are given in the AT-format. Each documentation of the function-blocks contains a short reference, which AT-commands are used. Due to copyright-restrictions it is not possible to give a whole overview of all AT-commands here. But such lists can be easily found in the internet.