Maestro doesn't seem to want to get into the details on how to use your modem, but here is the basic setup guide:
http://www.mastec.co.nz/Maestro/Fargo Manuals/FARGO MAESTRO 100_20 user guide Rev00.pdf
Basically you will have to get your PLC to emulate a terminal program not unlike Windows Hyperterm. In fact, practicing in a terminal first will help to get your commands correct.
But for an in-depth explaination of the command setyou will need the command reference:
http://www.gprsmodems.co.uk/xtend/AT Commands Interface Guide for Open AT Firmware 7-43.pdf
Reading the M100CDMA quickstart guide, it references you to "AirPrime Q26 Elite" guides for your documentation (now that's what I call product support! Not!)
From the Quick Start guide:
"The M100 CDMA use a Sierra Wireless Q26 Elite module, so please refer to the Sierra Wireless User
Manual and Applications Notes list below for further details, on:
– How to use the CDMA specific AT command: AirPrime Q26 Elite Software User Guide and AT Commands Interface Specification.
– Apps notes on CMUX features: AirPrime CMUX Feature for Q26 Elite.
– Apps notes on network registration details: AirPrime Q26 Elite Activation on the Sprint Network and
AirPrime Q26 Elite Activation on the Verizon Network.
You can find those documents in the package given by Maestro Wireless Solution, or directly for the Sierra
Wireless website:
http://www.sierrawireless.com/en/si...ads/AirPrime/Q_Series/AirPrime_Q26_Elite.aspx"