MODBUS RTU Floating point data 32bit

[Filipe_Gomes]

Hi the divices' name is multi-k made by kron, it is a brazilian company, I think you don't know the company.

The problem is I don't know how I use this exemple. I have the modbus library but I'm not knowing how use the master exemple.

How do I build the array of information to send to the slave? Address, function, the informations i want to read, how much register i want read and the crc.

I'm sending the document of the multimeter that say about the protocol, but i's in portuguese.

[Filipe_Gomes]

Hi the divices' name is multi-k made by kron, it is a brazilian company, I think you don't know the company.

The problem is I don't know how I use this exemple. I have the modbus library but I'm not knowing how use the master exemple.

How do I build the array of information to send to the slave? Address, function, the informations i want to read, how much register i want read and the crc.

I'm sending the document of the multimeter that say about the protocol, but i's in portuguese.

[siva_usic]

Hi,

        Before developing your application, make sure your device is communicating or not with help of here.

   1.  Read the characteristics in datasheet and enter to modbus tester software in Modbus settings tab.

   2.  Enter correct Slave Device address in view data tab.

   3.  Select Holding address.

   4.  Enter Starting address 1 and length 4 and select data format as a Swapped floating.

Now your device will communicating successfully, let me know I will send you example code in LabVIEW for this same configuration.

Siva..

[ashish-singh]

Do you have a Modbus ASC II testing software?

[Patricia B]

Hello,

Below are some links regarding the NI Modbus Library. Perhaps these will be of some use.

Introduction to MODBUS

http://zone.ni.com/devzone/cda/tut/p/id/7675

NI Modbus Library for LabVIEW

http://sine.ni.com/nips/cds/view/p/lang/en/nid/201711

Read Input Registers Using the Modbus Library for LabVIEW

http://zone.ni.com/devzone/cda/epd/p/id/6153

MODBUS Library for LabVIEW

http://sine.ni.com/devzone/cda/epd/p/id/4756

Regards,

Patricia B.