Building Object Tree; General Information About Building Object Tree; Adding Modbus Serial Slave Opc Client Object; Adding Channel Objects - ABB COM600 series User Manual

3.3.
3.3.1.
3.3.2.
3.3.3.
18
COM600 series, Version 5.1
Modbus Serial Slave (OPC) User's Manual
Object
Data Object (DO)
Event Definitions

Building object tree

General information about building object tree

The object tree is built in the communication structure of SAB600 by adding objects in
a logical order starting from the Modbus Serial Slave OPC Client object. For more
information, see Figure 3.2-1.
Before the Modbus Serial Slave OPC Client can be taken into use, configure an OPC
server for the process communication. For more information on creating an OPC server,
see COM600 User's Manual.
To add objects to the object tree in the communication structure:
•
right-click the object to which you want to add a child object, or
• copy the object.
Add the objects in the following order:
1. Modbus Serial Slave OPC Client
2. Modbus Serial Channel
3. Modbus Serial IED
4. Data objects.

Adding Modbus Serial Slave OPC Client object

To add the OPC client object in the communication structure:
1. Select the gateway object.
2. Right-click the gateway object and select New > Modbus > Modbus Serial Slave
OPC Client.

Adding channel objects

After the Modbus Serial Slave OPC Client object has been successfully added, continue
building the object tree by adding a Modbus Serial Channel object.
Description
A data object is an instance of one of the IEC Common data
classes, for example single point status, measured value etc.
Depending on the class, each data object has a set of attributes
for monitoring and controlling the object, for instance value,
quality, and control. Data objects are connected from OPC
servers to the Modbus Serial Slave OPC Client with the cross-
reference function. They are shown as child objects of the
Modbus Serial IED object in the object tree.
Event definitions are used for the diagnostic OPC A&E Server.
1MRS756913