Working with DTMs

Configuring the connection between the CPU originator and the CIP Safety device target is performed using a DTM. Control Expert supports usage of the following DTMs, depending on the device profile:

  • CIP Safety DTM: To configure a connection to a CIP Safety device. This can be done with or without a vendor EDS file.

  • Generic DTM: To configure a standard (i.e. non-safety) connection to a device, based on a vendor EDS file.

The settings you enter using a DTM are stored in Control Expert in the T_CIP_SAFETY_CONF DDDT, and used by the SafetyOpen Type 2 request to establish a connection between the originator CPU and the target device.

When an EDS File is Available

When a vendor EDS file is available for a device, use it to create a new DTM and add it to the DTM Catalog in Control Expert as follows:

Step

Action

1

In Control Expert, select Tools > DTM Browser .

2

In the DTM Browser, right click on the CPU DTM (BMEP58_ECPU_EXT) to open the context menu.

3

Navigate to and select Device menu > Additional functions > Add EDS to library. The EDS Addition wizard opens.

4

Refer to the Add an EDS File to the Hardware Catalog topic for step by step instructions on how to complete the process of adding an EDS file to the DTM Catalog.

After a DTM is added to the DTM Catalog, you can add it to your Control Expert project.

When an EDS File is Not Available

Control Expert includes a Generic Safety DTM in the DTM Catalog. You can use it to configure a CIP Safety device, when an EDS file is not available for that device.

Hybrid Devices

A hybrid device is a single device that supports both safety and standard connections. When you add a hybrid device to the DTM Catalog using the Add EDS to library command, two DTMs are created in the DTM Catalog for the device: a standard DTM and a safety DTM.

When you add a hybrid device to your project, you need to configure both the standard DTM and the safety DTM for the single device.

Adding a DTM to a Control Expert Project

To add a DTM to a Control Expert project:

Step

Action

1

In the DTM Browser, right click the CPU DTM (BMEP58_ECPU_EXT) and select Add... The Add dialog opens.

2

Select the DTM you want to add. It can be:

  • A CIP Safety DTM created from a vendor CIP Safety device EDS file, or

  • A CIP Safety DTM without a vendor EDS file.

3

Click Add DTM. The selected DTM appears in the DTM Browser below the CPU DTM.

4

Right click on the new DTM, and select Open. The DTM configuration window opens

Configuring the DTM

The CIP Safety DTM, created with or without a vendor EDS file present a similar series of configuration screens in Control Expert:

Navigation Tree / Configuration Tabs

DTM Type

With Vendor EDS

Without Vendor EDS

<Top Node>

✔

✔
 

General Node
 

Device tab

✔

X

Safety tab

✔

✔

<Connections>
 

Connection tab

✔

✔

Configuration Settings tab

✔

X
 

Configuration verification tab

✔

✔

< > indicates user-defined name.

✔ = included

X = not included

The following topics describe the several configuration tabs presented in Control Expert for each type of DTM.