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09-05-2016 05:11 AM
hello
i have labview 2013 and this library for modbus:
http://www.ni.com/example/29756/en/
and i could write single regs on my board(arduino) but when i want to write multiple regs i dont recieve any data on my lcd
who can help me ?
09-05-2016 04:04 PM
Are you receiving any confirmation messages when you have written the values? Specifically after you write the single register correctly what response are you getting?
Other then that, can you show (preferably as a VI or a snippet) the VI that you are using to write the registers?
09-06-2016 08:41 AM
I WROTE in arduino when you recieve holding regs[0]==1 print "hello" in lcd and when i wrote (from modbus labview)holding regs[0]==1 and send it in form"write single regesters" i see "hello" in my lcd
but when i change it to "write multiple regesters" i dont recieve any data and i cant see any things in my lcd
09-06-2016 08:46 AM
09-06-2016 09:37 AM
tnx hatef for your response
first i use modbus poll and i get the result correctly and then i use labview and it works for single regester but it dosnt work for mutiple regesters...
09-06-2016 09:44 AM
09-06-2016 10:14 AM - edited 09-06-2016 10:25 AM
I CANT get answer for multiple regs in modbus poll too i only get answer for single regs
what is your mean abut change adress i want to write from 0 adress why should i change adress however i changed address but i couldent recieve any data on my arduino and modbus poll error is illegal data address
09-06-2016 03:43 PM