Rules for Interconnectivity
 
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Introduction
The local rack within a Quantum EIO system can have different combinations of Ethernet head modules. This topic describes the types of networks created when the 140NOC78100 control head module interconnects with other head modules on the local rack.
NOTE: Refer to the Local Rack Head Module Connectivity topic in the Quantum EIO System Planning Guide for topology rules regarding installing and interlinking the head modules on the local rack.
NOTE: Refer to the Selecting the Correct Topology topic in the Quantum EIO System Planning Guide for details about the network types described on the following pages.
NOTE: Enable and configure the IP forwarding service in the 140NOC78100 module to provide network transparency in the network types described on the following pages.
NOTE: Refer to the Configuration chapter to configure the 140NOC78100 module for use in the network types described on the following pages.
A local rack contains one 140CRP31200 remote I/O head module and up to 6 communication modules (only one of which can be a 140NOC78100 module). The 140NOC78100 module can be interlinked with other head modules on the local rack for various network combinations:
140NOC78100 Module Interconnectivity
Network Type
Description
the 140NOC78100 module interlinked with the 140CRP31200 module
provides network transparency between the control network and the remote I/O network, while preserving network determinism
the 140NOC78100 module interlinked with up to three 140NOC78000 modules and the 140CRP31200 module
provides network transparency between the control network and the device network, while preserving network determinism
one 140NOC78000 modules interlinked with the service/extend port of the 140NOC78100 module
NOTE: If you to install up to three 140NOC78000 modules, please refer to the Quantum EIO System Planning Guide for bandwidth guidelines.
provides network transparency between the control network and the extended distributed I/O network
the 140NOC78100 module interlinked with up to three 140NOC78000 modules
independent distributed I/O network
provides network transparency between the control network and up to 3 independent distributed I/O networks
Interlinking the 140NOC78100 Module in a Remote I/O Network
To provide network transparency between the control network and the remote I/O network, perform the following steps:
Step
Action
1
Install one 140CRP31200 remote I/O head module and one 140NOC78100 control head module on the local rack.
2
Connect the interlink port (ETH 2) of the 140NOC78100 module to the interlink port  (ETH 2) of the 140CRP31200 module to provide network transparency between the control network and the Ethernet remote I/O network.
3
Connect the start of the main ring to the device network port (ETH 3 or ETH 4) of the 140CRP31200 module.
4
Connect the end of the main ring to the device network port (ETH 3 or ETH 4) of the 140CRP31200 module.
5
Connect the control network port (ETH 3 or ETH 4) of the 140NOC78100 module to the control network. 
1
140CRP31200 remote I/O head module 
2
140NOC78100 control head module interlinked with the 140CRP31200 module on the local rack 
3
main ring 
4
Ethernet remote I/O drops on the main ring 
5
control network
Interlinking the 140NOC78100 Module in a Device Network
To provide network transparency between the control network and a device network, perform the following steps:
Step
Action
1
Install one 140CRP31200 remote I/O head module, up to three 140NOC78000 distributed I/O head modules (that can be interlinked with the 140CRP31200 module), one 140NOC78100 control head module on the local rack, and an additional 140NOC78000 module (that can be interlinked with the 140NOC78100 module).
2
Connect the interlink port (ETH 2) of the 140NOC78000 module to the interlink port (ETH 2) of the 140CRP31200 module.
3
Connect the interlink port (ETH 2) of the 140NOC78100 module to the device network/interlink port (ETH 3) of the 140NOC78000 module.
4
Connect the start of the main ring to the device network port (ETH 3 or ETH 4) of the 140CRP31200 module.
5
Connect the end of the main ring to the device network port (ETH 3 or ETH 4) of the 140CRP31200 module.
6
Connect DRSs to the main ring for distributed I/O sub-rings and/or distributed I/O clouds.
Refer to the Predefined Configuration Files topic in the Quantum EIO System Planning Guide for details on installing DRSs and distributed I/O devices.
7
Connect the control network port (ETH 3 or ETH 4) of the 140NOC78100 module to the control network. 
1
140CRP31200 remote I/O head module 
2
140NOC78000 distributed I/O head module (interlinked with the 140CRP31200 module to support the device network) 
3
140NOC78100 control head module (interlinked with the 140NOC78000 module to provide network transparency between the control network and the device network) 
4
distributed I/O sub-ring 
5
DRSs with a predefined configuration file to support copper-to-fiber and fiber-to-copper transitions on the main ring 
6
distributed I/O cloud 
7
remote I/O drop on the main ring 
8
remote I/O drops on a remote I/O sub-ring 
9
DRS connecting the remote I/O sub-ring to the main ring 
10
control network 
11
main ring
Interlinking the 140NOC78100 Module in an Extended Distributed I/O Network
To provide network transparency between the control network and an extended distributed I/O network, perform the following steps:
Step
Action
1
Install one 140CRP31200 remote I/O head module, up to three 140NOC78000 distributed I/O head modules (that can be interlinked with the 140CRP31200 module), one 140NOC78100 control head module on the local rack, and an additional 140NOC78000 (that can be interlinked with the 140NOC78100 module).
2
Connect the interlink port (ETH 2) of the 140NOC78000 module to the interlink port (ETH 2) of the 140CRP31200 module.
3
Connect the device network/interlink port (ETH 3) of the 140NOC78000 module to the service/extend port (ETH 1) of the 140NOC78100 module.
4
Connect the device network port (ETH 4) of the 140NOC78000 to your existing distributed I/O network.
5
Connect the control network port (ETH 3 or ETH 4) of the 140NOC78100 module to the control network.
6
Connect the start of the main ring to the device network port (ETH 3 or ETH 4) of the 140CRP31200 module.
7
Connect the end of the main ring to the device network port (ETH 3 or ETH 4) of the 140CRP31200 module.
8
Connect DRSs to the main ring for distributed I/O sub-rings and/or distributed I/O clouds.
Refer to the Predefined Configuration Files topic in the Quantum EIO System Planning Guide for details on installing DRSs and distributed I/O devices. 
1
140CRP31200 remote I/O head module 
2
140NOC78000 distributed I/O head module (interlinked with the extend port of the 140NOC78100 module to support the extended distributed I/O network and also interlinked with the 140CRP31200 module to support the device network) 
3
140NOC78100 control head module (interlinked with the 140NOC78000 module (2) to provide network transparency between the device network and the control network) 
4
extended distributed I/O network 
5
distributed I/O sub-ring 
6
DRSs with a predefined configuration file to support copper-to-fiber and fiber-to-copper transitions on the main ring 
7
distributed I/O cloud 
8
remote I/O drop on the main ring 
9
remote I/O drops on the remote I/O sub-ring 
10
DRS connecting the remote I/O sub-ring to the main ring 
11
control network
Interlinking the 140NOC78100 Module in an Independent Distributed I/O Network
To provide network transparency between the control network and an independent distributed I/O network, perform the following steps:
Step
Action
1
Install one 140CRP31200 remote I/O head module, up to three 140NOC78000 distributed I/O head modules (that can be interlinked with the 140CRP31200 module), one 140NOC78100 control head module on the local rack and an additional 140NOC78000 module (that can be interlinked with the 140NOC78100 module).
2
Connect the interlink port (ETH 2) of the 140CRP31200 module to the interlink port (ETH 2) of the 140NOC78000 module.
3
Connect the interlink port (ETH 2) of a second 140NOC78000 module to the interlink port (ETH 2) of the 140NOC78100 module.
4
Connect the device network port (ETH 4) of the 140NOC78000 to your existing distributed I/O network.
5
Connect the control network port (ETH 3 or ETH 4) of the 140NOC78100 module to the control network
6
Connect the start of the main ring to the device network port (ETH 3 or ETH 4) of the 140CRP31200 module.
7
Connect the end of the main ring to the device network port (ETH 3 or ETH 4) of the 140CRP31200 module.
8
Connect DRSs to the main ring for distributed I/O sub-rings and/or distributed I/O clouds.
Refer to the Predefined Configuration Files topic in the Quantum EIO System Planning Guide for details on installing DRSs and distributed I/O devices. 
1
140CRP31200 remote I/O head module 
2
140NOC78000 distributed I/O head module (interlinked with the 140CRP31200 module 
3
140NOC78100 control head module 
4
140NOC78000 distributed I/O head module (interlinked with the 140NOC78100 module to provide network transparency between the independent distributed I/O network and the control network) 
5
independent distributed I/O network (participates only in the control network portion of a Quantum EIO system) 
6
distributed I/O sub-ring 
7
DRSs with a predefined configuration file to support copper-to-fiber and fiber-to-copper transitions on the main ring 
8
distributed I/O cloud 
9
remote I/O drop on the main ring 
10
remote I/O drops on the remote I/O sub-ring 
11
DRS connecting the remote I/O sub-ring to the main ring 
12
control network