Introduction

Use the EtherNet/IP Explicit Message window to send an explicit message from Control Expert to the M580 CPU.

An explicit message can be connected or unconnected:

  • connected: A connected explicit message contains both path information and a connection identifier to the target device.

  • unconnected: An unconnected message requires path (addressing) information that identifies the destination device (and, optionally, device attributes).

You can use explicit messaging to perform many different services. Not every EtherNet/IP device supports every service.

Accessing the Page

Before you can perform explicit messaging, connect the DTM for the M580 CPU to the CPU itself:

Step

Action

1

Open the DTM Browser in Control Expert (Tools > DTM Browser).

2

Select the M580 DTM in the DTM Browser.

3

Right-click the M580 DTM.

4

Scroll to the EtherNet/IP explicit messaging page (Device menu > Additional functions > EtherNet/IP Explicit Message).

Configuring Settings

Configure the explicit message using these settings on the EtherNet/IP Explicit Messaging page:

Field

Setting

Address

IP Address: The IP address of the target device that is used to identify the target of the explicit message.

Class: The Class integer (1 ... 65535) is the identifier of the target device that is used in the construction of the message path.

Instance: The Instance integer (0 ... 65535) is the class instance of the target device that is used in the construction of the message path.

Attribute: Check this box to enable the Attribute integer (0 ... 65535), which is the specific device property that is the target of the explicit message that is used in the construction of the message path.

Service

Number: The Number is the integer (1 ... 127) associated with the service to be performed by the explicit message.

NOTE: If you select Custom Service as the named service, type in a service number. This field is read-only for all other services.

Name: Select the service that the explicit message is intended to perform.

Enter Path(hex): Check this box to enable the message path field, where you can manually enter the entire path to the target device.

Data(hex)

Data(hex): This value represents the data to be sent to the target device for services that send data.

Messaging

Connected: Select this radial button to make the connection.

Unconnected: Select this radial button to end the connection.

Response(hex)

The Response area contains the data sent to the configuration tool by the target device in hexadecimal format.

Status

The Status area displays messages that indicate whether or not the explicit message has succeeded.

Button

Send to Device: When your explicit message is configured, click Send to Device.

Click the Close button to save the changes and close the window.