Introduction

Use the Bandwidth page to view the dynamic and static data for the bandwidth use by the embedded Ethernet scanner service in the CPU.

NOTE: Before you can open the diagnostics page, make the connection between the DTM for the CPU’s embedded scanner service and the physical module.

Open the Page

Access the Bandwidth information:

Step

Action

1

In the DTM Browser, right-click the name that is assigned to your CPU.

2

Select Device menu > Diagnosis.

3

In the left pane of the Diagnosis window, select the CPU node.

4

Select the Bandwidth tab to open that page.

Data Display

Use the Refresh Every 500ms checkbox to display the static or dynamic data:

Checkbox

Description

Selected

  • Display data that is dynamically updated every 500 ms.

  • Increment the number at the top of the table each time data is refreshed.

De-selected

  • Display static data.

  • Do not increment the number at the top of the table. That number now represents a constant value.

Bandwidth Diagnostic Parameters

The Bandwidth page displays the following parameters for the communication module:

Parameter

Description

I/O - Scanner:

EtherNet/IP Sent

The number of EtherNet/IP packets the module has sent in packets/second.

EtherNet/IP Received

The number of EtherNet/IP packets the module has received in packets/second.

Modbus TCP Received

The number of Modbus TCP requests the module has sent in packets/second.

Modbus TCP Responses

The number of Modbus TCP responses that the CPU’s embedded scanner service has received in packets/second.

I/O - Adapter:

EtherNet/IP Sent

The number of EtherNet/IP packets (per second) that the CPU’s embedded scanner service has sent in the role of a local slave.

EtherNet/IP Received

The number of EtherNet/IP packets (per second) that the CPU’s embedded scanner service has received in the role of a local slave.

I/O - Module

Module Capacity

The maximum number of packets (per second) that the CPU’s embedded scanner service can process.

Module Utilization

The percentage of the CPU’s embedded scanner service capacity being used by the application.

Messaging - Client:

EtherNet/IP Activity

The number of explicit messages (packets per second) sent by the CPU’s embedded scanner service using the EtherNet/IP protocol.

Modbus TCP Activity

The number of explicit messages (packets per second) sent by the CPU’s embedded scanner service using the Modbus TCP protocol.

Messaging - Server:

EtherNet/IP Activity

The number of server messages (packets per second) received by the CPU’s embedded scanner service using the EtherNet/IP protocol.

Modbus TCP Activity

The number of server messages (packets per second) received by the CPU’s embedded scanner service using the Modbus TCP protocol.

Module:

Processor Utilization

The percentage of the CPU’s embedded scanner service processing capacity used by the present level of communication activity.