Paul Rylatt Posted December 10, 2015 Report Share Posted December 10, 2015 For the V130, is it possible to connect to 2 Ethernet masters at the same time for polling? I have a customer using an Active-Active Redundant SCADA system polling with 2 masters at one time. They would prefer not to use an Ethernet Gateway and connect to the RS-485 terminal. If not, is there any thought to upgrading the O/S to handle this capability? If that is not planned or possible, do ANY Unitronics PLC's have the ability to communicate with 2 Ethernet masters concurrently? Link to comment Share on other sites More sharing options...
s.pratt Posted December 10, 2015 Report Share Posted December 10, 2015 Hello, You may configure two sockets on the Ethernet port of the unit and have these both be configured as a Modbus slave. Thus having two modbus slaves on teh same network for different ports. Please let me know if this helps. Link to comment Share on other sites More sharing options...
Paul Rylatt Posted December 10, 2015 Author Report Share Posted December 10, 2015 Thanks. Link to comment Share on other sites More sharing options...
Paul Rylatt Posted December 11, 2015 Author Report Share Posted December 11, 2015 Can more than one socket, i.e. Sockets 0 and 2, access Port 502 for MODBUS at the same time allowing both masters simultaneous access? Link to comment Share on other sites More sharing options...
s.pratt Posted December 11, 2015 Report Share Posted December 11, 2015 Hello, The sockets must be initialized to different port numbers or else communication conflicts ensue. I would recommend putting one socket at port 502, then the other at 503. This will ensure communication conflicts arise and the masters will know which port/socket to send the data to. Hope this helps. Link to comment Share on other sites More sharing options...
Recommended Posts
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 accountSign in
Already have an account? Sign in here.
Sign In Now