Connecting a Control Network to an M580 System

Introduction

A BMENOC0321 module provides multiple network connectivity options, while preserving network determinism:

non-redundant (single attachment):
- Use a single connection from the control network port on the BMENOC0321 module on the local rack to an Ethernet port on a switch on the control network
- This connection does not provide redundancy.
- Use copper shielded twisted 4-pair CAT6 (10/100/1000 Mbps) cable to connect the BMENOC0321 module to the switch on the control network. Confirm that the distance to the switch is less than or equal to 100 m.
redundant (RSTP):
- Implement cable redundancy in a daisy chain loop topology from the control network port on the BMENOC0321 module to a port on an Ethernet managed Ethernet switch on the control network. This DRS is linked to a second DRS, which completes the daisy chain loop by connecting back to the BMENOC0321 module.
- Use copper shielded twisted 4-pair CAT6 (10/100/1000 Mbps) cable between the BMENOC0321 module and the two Ethernet switches and between the DRSs as well. Confirm that the distance to the switch and between the switches is less than or equal to 100 m.

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

NOTE:

To connect a BMENOC0321 module to a control network in a Modicon M580 system, Schneider Electric recommends the use of these cables:

10/100 Mbps: For a communications link less than or equal to 100 Mbps, use CAT5e or CAT6 copper shielded twisted four-pair cables.
1000 Mbps: For a communications link less than or equal to 1000 Mbps, use only CAT6 copper shielded twisted four-pair cables.

Connecting a Non-redundant Control Network

For that do not require redundancy, you can provide network transparency between the control network and your desired network(s):

Step	Action
1	Configure these modules on the local rack: M580 CPU BMENOC0321 control network module BMENOC0301/BMENOC0311 Ethernet communication module(s) NOTE: The number of BMENOC0301/BMENOC0311 Ethernet communication modules depends upon your specific network design. You have the option to use these modules to extend the DIO scanning capabilities beyond the capacity of the selected M580 CPU.
2	Confirm that the Ethernet backplane ports are enabled.
3	Install an Ethernet switch on the control network a distance equal to or less than 100 m from the BMENOC0321 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 of the BMENOC0321 module (ETH 2 or ETH 3) to an Ethernet port on the switch on the control network. NOTE: Refer to the Schneider Electric recommendations for cable types.

This sample architecture shows an Ethernet RIO network that is connected to a control network. The BMENOC0321 control network module on the is connected to a control network to provide network transparency between the RIO network and the control network:

BME•58•••• CPU connecting the local rack to the main ring

BMENOC0301/BMENOC0311 Ethernet communication module on the local rack managing a number of distributed equipment nodes on the device network beyond the DIO scanning capacity of the M580 CPU

BMENOC0321 control network module

control network

RIO main ring

BM•CRA312•0 (e)X80 EIO adapter module on an RIO drop on the main ring

BMENOS0300 network option switch module on an RIO drop

BM•CRA312•0 module on an RIO drop on an RIO sub-ring

DIO cloud connected to the main ring via a BMENOS0300 network option switch module on an RIO drop

STB island in a DIO sub-ring connected to the main ring via a BMENOS0300 module on an RIO drop

Connecting a Redundant Control Network

If your control network requires redundant links, provide network transparency between the control network and your desired network(s):

Step	Action
1	Configure these modules on the local rack: M580 CPU BMENOC0321 control network module BMENOC0301/BMENOC0311 Ethernet communication module(s) NOTE: The number of BMENOC0301/BMENOC0311 Ethernet communication modules depends upon your specific network design. You have the option to use these modules to extend the DIO scanning capabilities beyond the capacity of the selected M580 CPU.
2	Confirm that the Ethernet backplane ports are enabled.
3	Install and connect two managed Ethernet switches 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 BMENOC0321 module on the local rack.
4	Use copper shielded twisted 4-pair CAT5e (10/100 Mbps) cables to make these connections: Connect a control network port on the BMENOC0321 module (ETH 2 or ETH 3) to a port on the DRS (optional). Connect the other control network port on the BMENOC0321 module (ETH 2 or ETH 3) to a different RSTP port (in the same domain) in the DRS.

This graphic shows an Ethernet RIO network that is connected to a control network with redundant links. The BMENOC0321 control network module on the local rack is connected to two separate DRSs on the control network to provide redundancy and network transparency between the RIO network and the control network: