Jump to content
Sign in to follow this  
Interact

Detecting MODBUS with Jazz

Recommended Posts

I have a Jazz as a MODBUS slave. Is there a way to detect whether the MODBUS master is communicating with the jazz from within the Jazz?

Share this post


Link to post
Share on other sites

I've not tried it, but if you have a working system try setting a coil with SB 66 (MODBUS function is busy).  If that doesn't work you may also want to look at SB 60.

Let us know.

Joe T.

 

Share this post


Link to post
Share on other sites

Both SB 60 and SB 66 do not respond to modbus being read... I do however notice that SB 67 does seem to respond. I am unable to find documentation that tells me what that address does. Does anybody know where I could find that documentation?

Share this post


Link to post
Share on other sites

If a System Bit doesn't have a descriptor on it or listed in the Help then it is one of the Mysteries of Unitronics.  We honestly don't know what a lot of them do.

Send an email to support@unitronics.com with your request and let us field commandos know what you find.

Joe T.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×