Jump to content

Recommended Posts

Posted
Hello. Is there a way to use the same instruction to read bits through Modbus protocol on both Premium and Quantum models? I'm trying to use on Quantum a Derived Function Block that already works on Premium and uses the READ_VAR instruction. So far I have just found the CREAD_REG instruction available on Quantum, that (as the name implies) reads contiguous registers. Thanks in advance.
Posted
I think you want a MBP_MSTR block. Recent firmware versions on the NOE show a change that allow them to use any Modbus function code. If your are using a CoPro model then not sure... it might have already supported it. Note with this block you will have to code the modbus message yourself. It's generally pretty easy, but post here if it is not obvious how to create the request beffer.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...