curlyandshemp
Lifetime Supporting Member
Our company has been asked to review the ethernet network in out of town plant owned by one of our customers.
Currently the plant has about 60 Ethernet devices , all on the same subnet. These devices are a combination of PFlex VFDs, PV+s, 1756 EIP IO,Contrologix 1756-ENBT, EIP Numatics solenoid blocks, NET-ENI modules for programming Micrologix PLCs, CompactLogix L32es, RSlogix5000 PC for support and SCADA, RSView and Ignition.
Needless to say, the network has serious response issues and online programming is virtually impossible.
Scenerio #1
We proposed a solution of splitting the overall network into two physical networks where one network would consist of HMIs, NET-ENI modules and SCADA with ethernet home runs back to a central switch in a new IT closet and EIP IO, VFDs and 1756-ENBT, Compact L32Es with home runs back to another central switch in the same IT closet. We also proposed having the main Contrologix rack reside in the IT closet with 2 1756-ENBT modules where one ENBT would connect to 1 switch and the other ENBT connect to the other switch.
Scenerio #2
An IT company has previously proposed to this customer to install a single 24 port managed switch utilizing VLAN technology and a star topology. Each area in the plant would be assigned a VLAN subnet that existing VFDs, HMIs and EIP IO would connect to switch then a home run back to the central managed switch.
I am too green regarding VLAN, so if anyone can comment on the above Scenerios that would be greatly appreciated.
Currently the plant has about 60 Ethernet devices , all on the same subnet. These devices are a combination of PFlex VFDs, PV+s, 1756 EIP IO,Contrologix 1756-ENBT, EIP Numatics solenoid blocks, NET-ENI modules for programming Micrologix PLCs, CompactLogix L32es, RSlogix5000 PC for support and SCADA, RSView and Ignition.
Needless to say, the network has serious response issues and online programming is virtually impossible.
Scenerio #1
We proposed a solution of splitting the overall network into two physical networks where one network would consist of HMIs, NET-ENI modules and SCADA with ethernet home runs back to a central switch in a new IT closet and EIP IO, VFDs and 1756-ENBT, Compact L32Es with home runs back to another central switch in the same IT closet. We also proposed having the main Contrologix rack reside in the IT closet with 2 1756-ENBT modules where one ENBT would connect to 1 switch and the other ENBT connect to the other switch.
Scenerio #2
An IT company has previously proposed to this customer to install a single 24 port managed switch utilizing VLAN technology and a star topology. Each area in the plant would be assigned a VLAN subnet that existing VFDs, HMIs and EIP IO would connect to switch then a home run back to the central managed switch.
I am too green regarding VLAN, so if anyone can comment on the above Scenerios that would be greatly appreciated.
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