Connecting a Control Network to a Quantum EIO System

Introduction

A 140NOC78100 control head module provides multiple network connectivity options, while preserving network :

non-redundant (single attachment) — provides a single chain connection from the control network port on the 140NOC78100 module installed on the local rack to an Ethernet port on a switch located on the control network.

A single chain connection does not provide redundancy.

Use copper shielded twisted 4-pair CAT6 (10/100/1000 Mbps) cable to connect the 140NOC78100 module to the switch on the control network. The distance to the switch can only be less than or equal to 100 m.
redundant (RSTP) — provides cable redundancy by using a daisy chain loop topology from the control network port on the 140NOC78100 module to a port on an Ethernet managed dual-ring switch (DRS) located on the control network. This DRS is linked to a second DRS, which completes the daisy chain loop by connecting back to the 140NOC78100 module.

Use copper shielded twisted 4-pair CAT6 (10/100/1000 Mbps) cable between the 140NOC78100 module and the 2 DRSs and between the DRSs as well. The distance to the DRSs and between the DRSs can only be less than or equal to 100 m.

NOTE: We recommend that copper shielded twisted 2-pair CAT5e (10/100 Mbps) and CAT6 (10/100/1000 Mbps) cables not be used. Rather, we recommend that you use copper shielded twisted 4-pair CAT5e (10/100 Mbps and CAT6 (10/100/1000 Mbps) cables.

NOTE: The switch used in a non-redundant control network type does not have to be a managed dual-ring switch ().

Connecting a Non-redundant Control Network

If your control network does not require redundancy, follow the steps below to provide network transparency between the control network and your desired network(s):

Step	Action
1	Install a 140NOC78100 control head module on the local rack. Install a 140CRP31200 remote I/O head module and 140NOC78000 distributed I/O head modules (the number of which depends upon your desired network) on the local rack.
2	Interlink the head modules, based on your desired network(s). NOTE: Use copper shielded twisted 4-pair CAT5e (10/100 Mbps) cable to interlink the head modules on the local rack.
3	Install an Ethernet switch on the control network a distance equal to or less than 100 m from the 140NOC78100 module on the local rack. NOTE: The switch does not have to be a managed dual-ring switch (DRS).
4	Connect the control network port (ETH 3 or ETH 4) of the 140NOC78100 module — using copper shielded CAT6 (10/100/1000 Mbps — to an Ethernet port on the switch located on the control network.

The following graphic displays an Ethernet remote I/O network connected to a control network. The 140NOC78100 control head module on the , which is connected to a switch on the control network, provides network transparency between the remote I/O network and the control network.

140CRP31200 remote I/O head module

140NOC78000 distributed I/O head module (interlinked with the 140CRP31200 module to support the device network)

140NOC78100 control head module (interlinked with the 140NOC78000 module to provide network transparency between the control network and the device network)

distributed I/O sub-ring

DRSs with a predefined configuration file to support copper-to-fiber and fiber-to-copper transitions on the main ring

distributed I/O cloud

remote I/O drop on the main ring

remote I/O drops on a remote I/O sub-ring

DRS connecting the remote I/O sub-ring to the main ring

main ring

control network

Connecting a Redundant Control Network

If your control network requires redundancy, follow the steps below to provide network transparency between the control network and your desired network(s):

Step	Action
1	Install a 140NOC78100 control head module on the local rack. Install a 140CRP31200 remote I/O head module and 140NOC78000 distributed I/O head modules (the number of which depends upon your desired network) on the local rack.
2	Interlink the head modules, based on your desired network(s). NOTE: Use copper shielded twisted 4-pair CAT5e (10/100/1000 Mbps) cable to interlink the head modules on the local rack.
3	Install and connect 2 Ethernet managed dual-ring switches (DRSs via copper shielded twisted 4-pair CAT5e (10/100 Mbps) cable on the control network a distance equal to or less than 100 m from each other and from the 140NOC78100 module on the local rack.
4	Connect one of the control network ports (ETH 3 or ETH 4) of the 140NOC78100 module via copper shielded twisted 4-pair CAT5e (10/100 Mbps) cable to a port on the DRS. Connect the other control network port (ETH 3 or ETH 4) of the 140NOC78100 module via copper shielded twisted 4-pair CAT5e (10/100 Mbps) cable to another port on the DRS.

NOTE: For DRS installation and configuration details, refer to the Predefined Configuration Files topic in the Quantum EIO System Planning Guide.

The following graphic displays an Ethernet remote I/O network connected to a redundant control network. The 140NOC78100 control head module on the , which is connected to 2 separate DRSs on the control network, provides network transparency between the remote I/O network and the control network.