DSC Modbus Server

[MartinMcD]

Hello there,

I have an upcoming project where I will use DSC and Modbus for the first time.  My sensor network will be Modbus over RS485 but the piece of plant I need to talk to is Modbus over RS232.

When in a LabVIEW project I create a new Modbus I/O Server, I have the option to select Modbus Serial or Modbus Ethernet. 

My question is - does Modbus Serial support RS232 and RS485?

Thank you,

Martin

[AudioVideoDisco]

Hi Martin,

Thanks for posting.
In short, yes Modbus Serial supports both RS232 and RS485.
You can download the Modbus library, which contains some useful VIs for communicating over Modbus, at the following link.

MODBUS Library for LabVIEW - https://forums.ni.com/t5/Reference-Design-Content/LabVIEW-Modbus-API/ta-p/3524019

Good luck with your project!

Paul

Applications Engineer
NIUK

[AudioVideoDisco]

Here are a few more links that you may find useful.

Connect LabVIEW to Any PLC With Modbus - https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000x0QgCAI&l=en-US

Using Touch Screens with LabVIEW through Modbus Serial Devices - https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YFZOCA4&l=en-US

Best Regards

Paul

Applications Engineer

NIUK