Configuring the Service Port
Original instructions
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Introduction
Follow these steps to configure the service port (ETH 1 on the front of the BMENOC0321 control network module) as an access port, a port mirroring port, or an extended DIO network port.
View the Page
Enable service port configuration:
Step
Action
1
Enable the Service Port on the Services page....
2
Select Service Port in the navigation tree.
3
In the Service Port Mode list, select:
  • Access Port (default)
  • Port Mirroring
  • Extended Network
4
Press a button to finish:
  • Apply: Save changes with the window open.
  • OK: Save changes and close the window.
Access Port Mode
In Access Port mode, the service port is Enabled and cannot be changed. Connect these types of devices to the service port in this mode:
You can communicate with the CPU/PAC or the BMENOC0321 module itself. You can also access other devices that are connected to the network.
Port Mirroring Mode
Select Port Mirroring mode to configure the port to monitor and capture traffic to support a network analyzer (like Wireshark). In this mode, the service port is a read-only port. That is, you cannot communicate with Ethernet devices through the service port.
In the Port Mirroring area, use the Source Port property to enable specific ports:
The service port monitors traffic to the enabled ports:
Source Port
Description
Internal Port
Monitor Ethernet traffic to and from the module via the service port.
ETH 2
Ethernet traffic to and from port ETH 2 is sent to the service port.
ETH 3
Ethernet traffic to and from port ETH 3 is sent to the service port.
Backplane Port
Ethernet traffic to and from the backplane port is sent to the service port.
NOTE: If a device that is connected to the service port, ETH 2 port, or ETH 3 port is configured for a speed that exceeds 100 Mbps, the Ethernet link may not be established between the device and the module through the service port.
Extended Network Mode
Select this mode to extend the device network. Add an extended DIO network to an M580 system by following the directions in the Modicon M580 Standalone System Planning Guide for Frequently Used Architectures.
Online Configuration
Configure the service port online with Control Expert using CIP explicit messaging, but this configuration may be lost when the BMENOC0321 Ethernet communications module is reset.
Configure the service port online with Control Expert using CIP explicit messaging. Refer to the description of the service port control object The CIP object configuration is stored in volatile memory. When the BMENOC0321 Ethernet communications module is reset it reverts to the service port configuration in the DTM (above)