GPRS and MODBUS ???

[a4tech]

Hello, I have two controllers V1040, and two modem TC65. I need a simple example of communication between them via GPRS and MODBUS. Modems connect to the GPRS network and get a static IP. How to use MODBUS. I do not ETHERNET card.

Sorry for bad English.

[Ofir]

Hi,

When working with MODBUS over GPRS you will need to use "serial" MODBUS FB. After connection established between the PLCs activate the MODBUS CONFIG.

Attached are examples for V130 Modbus over GPRS. (You can upgrade the applications to V1040 from project menu convert to color).

The Modbus client GPRS application will perform the call to the Modbus server GPRS. (If you don’t have static IP then power up first the SERVER application check on the HMI what is the IP, then change in the client application the IP in GPRS CALL FB)

130 ModBus Client over GPRS.VLP

130 ModBus Server over GPRS.VLP

[serban.b]

Hello Ofir,

 

I downloaded your examples and tried to open them with visilogic v9.5. after file conversion, a popup inform me that I can not open the file from various reasons: - could not find the file, or the file is corrupt, etc. Can you please reattach the examples?

 

Thank you!

[Ofir]

Hi,

 

I was able to download and open the applicaitons without any errors.

Please try to download again (maybe the files were not downloaded completely)

In case you still face the same issue, send a mail to support@unitronics.com and we will send it to you by mail.