5. CONFIGURATION FOR USING OPC
5-4
5.3 DCOM Settings
DCOM is a technology used for communication between PC software components distributed
in the network. If you want to use a remote connection to link an OPC client to the local
device where the CODESYS OPC server is running, you must configure DCOM settings.
To enable DCOM connection, a user of the OPC client PC must be authenticated on the local
device. If workgroups are used in the system, you can authenticate a client user by creating the
same user account with the same password on both the local device and the OPC client PC.
When you start using the CODESYS OPC server, follow the procedure below to set up the
DCOM configuration.
Notes 1: Follow the setup procedure only when you use OPC Classic. If you use OPC UA
instead, it is not necessary to do so.
2: Follow the setup procedure on both the local device and the OPC client PC.
5.3.1 DCOM security settings
1. Sign in to the computer using an administrator account (Administrator).
2. Start the
Component Services
in the following steps.
• If the OS is Windows® Embedded Standard 7, click
Start
,
type the following in the
Search programs and files
box at the lower left corner on the Start menu, and then
press
Enter
.
mmc comexp.msc /32
• If the OS is Windows® 10, click search icon at the right on the Start button,
type the
following in the
Search Windows
box, and then press
Enter
.
mmc comexp.msc /32
3. The
Component Services
window appears. Select
Console Root
>
Component Services
>
Computers
>
My Computer
to expand trees, and then right-click on
My Computer
.
On the menu, click
Properties
.
