Modbus via Cellular Modem

[dan_lorentz]

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

[s.pratt]

Hello Dan,

 

Please e-mail into support@unitronics.com for further assistance with this topic.

[Maria Lemone]

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

[Joe Tauser]

Does this product include a SIM card or is that up to the user to provide?

Joe T.