DTM Browser

Overview

The DTM Browser displays a hierarchical list of DTMs—in the form of nodes on a connectivity tree—that have been added to your Control Expert project. Each DTM node represents an actual module or device in your Ethernet network.

Node Types

There are 3 types of DTM nodes:

Communication DTMs:
- Any COM DTM can be plugged directly under the root node (Host PC) at the 1st level
- A COM DTM can support Gateway DTMs or Device DTMs as children if their protocols are compatible
Gateway DTMs:
- A Gateway DTM can support other Gateway DTMs or Device DTMs as children if their protocols are compatible.
Device DTMs:
- A Device DTM does not support any child DTMs

Node Names

Each DTM has a default name when inserted into the browser. The default name consists of the following elements:

<Channel: Address> Device Name

Where:

Element	Description
channel	This is the name of the channel communication media, to which the device is plugged in. This name is read from the DTM and is set by the device vendor. Example: EtherNet/IP, Modbus
address	The bus address of the device, which can be: The connection point on its parent gateway network The slot number in the modular device parent internal bus Example: the device IP address
device name	The default name is determined by the vendor in the device DTM, but can be edited by the user.

Node Status

The DTM Browser displays the status of each DTM node in the connectivity tree, as follows:.

Status	Description
Built / Not-built	A blue check mark superimposed on a device icon indicates that node, or one of its sub-nodes, is not built. This means that some property of the node has changed, and the information stored in the physical device is no longer consistent with the local project.
Connected / Disconnected	A connected DTM is denoted in bold text. An unconnected DTM appears in plain text. NOTE: Connecting a DTM to its physical device automatically connects higher level parent nodes up to the root node. Disconnecting a DTM from its physical device automatically disconnects its lower level child nodes. NOTE: Connecting or disconnecting a DTM to or from its device does not also connect or disconnect Control Expert to or from the PLC. DTMs can be connected/disconnected while Control Expert is either offline or online.
Installed / Not-installed	A red superimposed on a device icon indicates the DTM for that device is not installed on the PC.

Handling Invalid Nodes

As indicated above, a red

superimposed on a node indicates the DTM for that node is not installed on the PC. To resolve this situation, click the right mouse button on the node to open a pop-up menu with the following two commands:

Command	Description
Delete	Removes the selected node (and its sub-nodes) from the DTM Browser.
Properties	Opens the following dialog, which you can use to identify the name of the missing DTM: