I am having android mobile. I wish to use android to communicate with a dangle based electrical board.

 

Search the Android market for Modbus... comes up with

(simple open source modbus master)
https://market.android.com/details?id=com.bencatlin.modbusdroid

and two HMI's
https://market.android.com/details?id=br.com.superview.mobile.lite

https://market.android.com/details?id=message.kod

Another thing you can do is use pvbrowser on a PC to communicate to your equipment and then use the pvbrowser client for Android

 

> Another thing you can do is use pvbrowser on a PC to communicate to your
> equipment and then use the pvbrowser client for Android

Thank you for your reference to pvbrowser.
For other readers i post the URLs of Android threads from our forum.

http://tech.groups.yahoo.com/group/pvbrowser/message/1322

http://tech.groups.yahoo.com/group/pvbrowser/message/1368