How to MODBUS LIBRARY

[ssddii]

hi
i have downloaded modbus library to communicate with modbus RTU device
Can any one tell me how should i initialize the communication, wether by VISA init or using MODBUS library?
what blocks should i use to read and write to slave,there order ? .Where should i start from? I am confused as there are no technical help about usig this library.
Please solve my problem
thanks and regards

[Nick_D]

Hi ssddii,

I would recommend starting with an example. I've included a screenshot of where you can find this in labVIEW.

Regards,

Nick D.

Message Edited by Nick D on 08-18-2007 04:29 PM

[ssddii]

Hey Nick D
thanks for your help
but i need some more help.
I want to know that how can i get a responce from a device
operating at 9600 8 E 1 NONE config
at COM1.how should i make my vi to start , what blocks of library i should use in there order?
Actualy i want to send an 8 byte  hex string  01 03 00 01  00 01 D5 F9      to the device and read the responce.
can you make a vi for me so that i can get an idea how to do all the initializationa and getting values.
thanks and looking forward
sdi

[RavensFan]

Look at MB Serial Init.VI to set your serial port parameters.

Look at MB Serial Master Query for sending the message.

Look at MB Serial Example Master for how to wire up MB Serial Master Query.