Adding an Independent Distributed I/O Network
Original instructions
About us
Introduction
Add an independent distributed I/O network if you have existing distributed I/O devices — which you may not want to reconfigure — to the Quantum EIO system for the purpose of communicating with the control network.
An independent distributed I/O network is not part of the Ethernet remote I/O network, but it does communicate with the control network.
An independent distributed I/O network is an Ethernet-based network containing distributed I/O devices on a copper wire running from a single port connection. If you use dual-port devices that support RSTP, you can connect the devices in a daisy chain loop to the device network ports (ETH 3 and ETH 4) on the 140NOC78000 distributed I/O head module. There is no interlink to the remote I/O network. The 140NOC78000 module is interlinked with the the 140NOC78100 control head module on the local rack to support communication with the Quantum EIO control network only. The 140NOC78000 module can be interlinked with other 140NOC78000 modules. Neither the 140NOC78000 nor the 140NOC78100 modules can be interlinked with the 140CRP31200 remote I/O head module on the local rack.
Example
The following graphic shows an independent distributed I/O network (5). The 140NOC78000 distributed I/O head module is interlinked with the 140NOC78100 control head module. Neither the 140NOC78000 nor the 140NOC78100 module in the independent distributed I/O network is interlinked with the 140CRP31200 remote I/O head module. A second 140NOC78000 module is interlinked with the 140CRP31200 module to support distributed I/O devices on the device network: 
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140CRP31200 remote I/O head module 
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140NOC78000 distributed I/O head module interlinked with the 140CRP31200 module to support the device network 
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140NOC78100 control head module 
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second 140NOC78000 module interlinked with the 140NOC78100 module to support an independent distributed I/O network and communicate with the Quantum EIO control network 
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independent distributed I/O network, which communicates with the Quantum EIO control network 
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distributed I/O sub-ring 
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DRSs — with C4 predefined configuration files — for copper-to-fiber and fiber-to-copper transitions on the main ring 
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distributed I/O cloud 
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remote I/O drop on the main ring 
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remote I/O sub-ring 
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DRS — with a C1 predefined configuration file — on the main ring connected to the remote I/O sub-ring 
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control network