DH+ RIO Network with multiple PLC's
- Thread starter Darkzadow
- Start date
Ken Roach
Lifetime Supporting Member + Moderator
Remember that DH+ is a peer-to-peer network. While it uses the same wire, its functionality different from the master/slave RIO network.
RIO can only have one Scanner and multiple Adapters.
This separation of functions is one of the reasons Rockwell Automation developed the ControlNet network for the PLC-5 controllers, because that combines the peer-to-peer connectivity of DH+ with the I/O scanning of RIO.
Most modern ControlLogix systems use EtherNet/IP, which mixes both the services of cyclic I/O and peer-to-peer messaging on the same network.
RIO can only have one Scanner and multiple Adapters.
This separation of functions is one of the reasons Rockwell Automation developed the ControlNet network for the PLC-5 controllers, because that combines the peer-to-peer connectivity of DH+ with the I/O scanning of RIO.
Most modern ControlLogix systems use EtherNet/IP, which mixes both the services of cyclic I/O and peer-to-peer messaging on the same network.
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