Service Port Parameters

These parameters are on the Control Expert Service Port tab:

Field

Parameter

Value

Comment

Service Port

–

Enabled (default)

Enable the port and edit port parameters.

–

Disabled

Disable the port (no access to parameters).

Service Port Mode

–

Access (default)

This mode supports communications to Ethernet devices.

–

Mirroring

In port mirroring mode, data traffic from one or more of the other ports is copied to this port. Connect a packet sniffing tool to this port to monitor and analyze port traffic.

NOTE: In this mode, the Service port acts like a read-only port. That is, you cannot access devices (ping, connection to Control Expert, and so on) through the Service port.

Access Port Configuration

Service Port Number

ETH1

You cannot edit the value in the Service Port Number field.

Port Mirroring Configuration

Source Port(s)

Internal Port

Ethernet traffic to and from the internal processor sent to the Service Port

ETH2

Ethernet traffic to and from ETH2 sent to the Service Port

ETH3

Ethernet traffic to and from ETH3 sent to the Service Port

Backplane Port

Ethernet traffic to and from the backplane sent to the Service Port

Automatic blocking of service port on Standby CPU (in Hot Standby system only)

–

Deselected (default)

Automatically enables the service port of the standby BMENOC0301.4 or later module to allow an RIO main ring, with or without distributed equipment, to communicate with the control network.

Selected

Automatically blocks the service port to help avoid an unintentional loop.

Hot Standby Configuration

In an M580 Hot Standby configuration, some topologies may unintentionally create a loop that interferes with network communication. These topologies are essentially related to the management of flat networks, i.e., topologies in which the control network, remote I/O network, and/or the device network belong to the same subnet.

To help avoid creating an unintentional loop caused by connection to the service port, select the Automatic blocking of service port on Standby CPU check box that appears in the ServicePort tab of the configuration dialog. This check box is available only in Unity Pro 13.1 or later.

NOTE:

Unity Pro is the former name of Control Expert for version 13.1 or earlier.

To configure, select the ServicePort tab.

  • Select the Automatic blocking of service port on Standby CPU check box so that the service port of the standby CPU is automatically blocked.

  • Deselect the check box so that the service port is not automatically blocked.

The check box is deselected (unblocked) by default.

NOTE: These features are implemented in a Hot Standby system using a CPU with firmware version 2.7 or later and a BMENOC0301.4 or later module.

Refer to the ServicePort configuration topic to see topology examples in which this issue exists.

On-line Behavior

The Service Port parameters are stored in the application, but you can reconfigure the parameters in connected mode. Values that you reconfigure in connected mode are sent to the PAC through explicit messaging.

The changed values are not stored, so a mismatch can exist between the parameters that are being used and those that are in the stored application.