dan_lorentz Posted October 19, 2015 Report Share Posted October 19, 2015 Has any one done this before? It was mentioned on a other thread that it might be possible. I was curious if there was any available sample code showing how this is actually done? Thanks, Dan Quote Link to comment Share on other sites More sharing options...
s.pratt Posted October 19, 2015 Report Share Posted October 19, 2015 Hello Dan, Please e-mail into support@unitronics.com for further assistance with this topic. Quote Link to comment Share on other sites More sharing options...
Maria Lemone Posted September 28, 2016 Report Share Posted September 28, 2016 Yes I've used GT-540-3GWA to get Modbus data over the cellular network. I connected my modbus devices over the RS-485 port. I configured it with the software utility that came with it and was able to get Modbus data from a PLC and I/O. GT-540-3GWA: $699.00 Cellular Wireless Intelligent GPRS Data Server with 6 Digital Inputs, 2 Digital Outputs and 1 Analog Input. Supports 2G Quad-band 850/900/1800/1900 MHz Frequencies and 3G 850/900/1900/2100 MHz. Provides Wireless Access to Modbus RTU devices. Supports operating temperatures from -25°C ~ +75°C (-13°F ~ +167°F) http://www.icpdas-usa.com/gt_540_3gwa.html?r=maria Quote Link to comment Share on other sites More sharing options...
MVP 2021 Joe Tauser Posted October 7, 2016 MVP 2021 Report Share Posted October 7, 2016 Does this product include a SIM card or is that up to the user to provide? Joe T. Quote Link to comment Share on other sites More sharing options...
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