C15: Copper/Fiber Connection for a Long-haul Hot Standby Link
Original instructions
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Preconfiguration File Name
C15_CRPLinkHotStandbyLDVx.xx.cfg, where Vx.xx references the version number of the file.
Use of this Preconfiguration
In some Hot Standby applications, you may want to separate the primary controller from the standby controller by a long distance. In a tunnel application, for example, you may want to install the two PLCs at opposite ends of the tunnel to lessen the likelihood that environmental damage to one affects the other.
A fiber-optic link connects the 140CRP93200 heads in each local rack. Because the 140CRP93200 modules do not have fiber ports, the initial connections are made with copper cable. Two DRSs, each with this preconfiguration downloaded, are used to transition from copper to fiber then back to copper.
Devices Supported by this Preconfiguration
The C16 file supports the TCSESM063F2CU1 and TCSESM063F2CS1 ConneXium extended DRSs. Each DRS has six ports that support copper connections and two ports that support fiber-optic connections. Choose a DRS according to the fiber cable distances in your hardware configuration:
Dual-Ring Switch
Fiber Ports
Mode
Distance
TCSESM063F2CU1
2
multi-mode
2 km
TCSESM063F2CS1
2
single-mode
15 km
Predefined Port Connections
This is a graphical view of the supported connections:
These connections are available when you use the C15 file:
Port
Type
Description
1
FX
fiber connection to the main ring
3
100Base-TX
copper connection from the 140CRP93200 to the main ring
2
FX
disabled fiber port; do not use
4
100Base-TX
disabled copper port; do not use
5
100Base-TX
disabled copper port; do not use
6
100Base-TX
disabled copper port; do not use
7
100Base-TX
disabled copper port; do not use
8
100Base-TX
port mirroring connection (disabled by default)
NOTE: This predefined configuration does not support the use of a sub-ring or any distributed I/O clouds.
NOTE: When you download this DRS predefined configuration file to a switch, the file provides a set of operating parameters that enable the switch to operate with high efficiency in the specified architecture.
Do not adjust the configuration parameters or alter the port usage from what is shown above. Changing the configuration parameters or the port assignments can compromise the effectiveness and accuracy of the switch and the performance of the RIO network.
You can enable/disable port mirroring and change the selection of the source ports that you want mirrored. Port mirroring is disabled by default. The destination port is set to port 8, and ports 1-7 are selected as source ports. Do not change the destination port. When using port mirroring, select the ports, for which you want to analyze the traffic, as the source ports. When you finish troubleshooting, disable port mirroring.
A Long-haul Hot Standby Link
This sample network includes a primary local rack and a secondary Hot Standby rack. Multiple RIO drops are connected to the main ring. Two copper-to-fiber DRSs provide a long-haul fiber connection that supports the Hot Standby functionality: 
1
The CPU in the primary rack is connected to (e)X80 EIO adapter modules. 
2
RIO drops are connected to the main ring through BM•CRA312•0 (e)X80 EIO adapter modules. 
3
The CPU in the standby rack is connected to (e)X80 EIO adapter modules. 
4
DRSs are configured for long-haul Hot Standby support and connected by a fiber cable greater than 100 m long.