How to configure OPC Client in UltimateAccess (CIMON SCADA)

Q. How
to configure OPC Client in SCADA?


A. Refer to the instructions below.



These are conditions that should be met in order to
properly configure and use OPC Client in SCADA:


  • USB Dongle (Keylock) should be CM04-SCADA 1-E or
    above as shown in the below image.
  • In this example, UltimateAccess V3.03 is used for the
    FAQ manual.
[OPC Client Overview]

driver can communicate with the OPC Server.




Device Name

OPC Client


Device Type

System Interface


DLL Name






Supported Devices

OPC Server






[Communication Setup for OPC Client]

1. Open “CimonD” and Click [Tools] → [I/O
Device] → [New Device]







2. There
are “OPC Client” and “OPC Client DA 3.0.”


“OPC Client” driver is developed based on “OPC Core Components 2.00.”

“OPC Client DA 3.0” driver is developed based on “OPC Core
Components 3.00.”

Choose one of the drivers according to the version of the
OPC Server Program.





3. Click
[Add Group] at the Device Configuration for (OPC Client).

    Click [Add Group] at the Device Setup for (OPC Client DA 3.0).






4. If “OPC Client” is selected, the below picture will
pop up.





Node: Select “Local” if OPC server program runs in PC which is connected to

 Select “Remote
if OPC server program runs in other PC connected to PLC through network.


Server: Click “Searching Server” to choose the OPC server.


polling: Select update time for data.


Select Communication Enable or Disable. (Default is “Active”)


It is used to set percentage of minimum and maximum of Analog value saved in
OPC server.    

 When Analog value is changed by setting
percentage CIMON SCADA will work.


Bias: Not used


ID: Not used


*In order to use “Remote” OPC Client, the following registry must be


regsvr32 /s opcproxy.dll


The OPC registry is automatically registered when the files of the
directory from the OPC Server PC are copied to the OPC Client PC and the BAT
file is executed by the extension.


When the OPC Server PC is not communicating properly, please make
sure that the account and the password for both Server and Client are the same
and that a user must be logged in with the same account.

If “OPC Client DA 3.0” is selected, the below
picture will pop up. 


        –The setting is the same as that of “OPC Client.”
        –ITEM LIST copy to clipboard: Copies tags of OPC
Server. You can paste them to Word or Excel to edit.

        6.  Click “OK” to save configuration. You can see the “ST1” group as shown below.

       7After setting “OPC Client,” create real tags to
communicate with “OPC Server” program.


Click [I/O Device] to select the device you have
already set for OPC Server.
       – Write the name of I/O Address which is already
registered in OPC Server.

       – For example, OPC Server program has tags as shown
       I/O Address must be [“Station Name.Tag name”]:
       *If tag name of OPC Server is
written in small letters, tag name of SCADA must be small letters too.

project and run CimonX to communicate with OPC Server.
Server program should be “Run mode” to communicate with SCADA.
and Configuration should be different according to OPC Server Program.
should be connected to PC to communicate with OPC Server Program.
                            – Here is the example of communication.