Brian-CHI (Customer) asked a question.
working with BACNet/IP via Ethernet on a P2000
I have a boiler control module that I'm hoping to interface with to gain access to some parameters and set setpoints. How can I interface with it?
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I've not used the RTA products, but they are frequently praised for functionality and ease of use.
https://www.rtautomation.com/protocol-selector-1/bacnet-ip-server+modbus-tcp-ip-client/
Red Lion has BACnet Ethernet drivers for their controllers and HMIs also, so if your project needs an HMI, it could serve both purposes.
ok so if I’m understand this correctly I can do the translation from BACnet to Modbus inside of the p2000 CPU I have to translate it first then I can work with it? Is it bidirectional or is it read only at that point?
The protocol conversion would take place in the 3rd party device. You would just need to assign some tags to Modbus addresses for use by the device. The 3rd party protocol converter would handle moving that data to and from the device(s) on BACnet. I've never worked with BACnet, but have worked with several different types of protocol converters and have a partiality to Red Lion because they give you the tools and very flexible driver options to do just about anything with little effort.
The Productivity series PLC's do not support BACnet/IP protocol but they do support Modbus TCP. So the suggestion above from @OkiePC (Customer) would mean that a separate device like a protocol converter or gateway could handle the translation from BACnet/IP to Modbus TCP to allow you to read parameters and set some setpoints.
A similar question was posed a few years ago about BRX PLC's and other customers commented much the same about using a protocol converter.
Here's the link to that thread if you'd like to read more:
Is there a convertor or method to provide BACnet via Modbus with the BRX PLC?
Yeah, I saw that post but wasn't sure how/if it applied to the P2000. That would be a cool P2000 module to be able to put in! wink wink!