1. SoMachine To Citect Studio:
   • Create the PLC Tags in SoMachine as Global Variables(GVL).
   • Create Symbol Configuration and click the Check box in GVL to access.

• Open OPC Server.
• Right Click Server –>Append PLC –>Click Connection –>Edit.
• Enter the PLC Name as per the SoMachine Software.
• Check the PLC Name in SoMachine –>Tools –>OPC –>CoDeSys PLC Address.
• Then save OPC Configuration.

In Citect Studio:

• Open Citect Studio –>Topology –>I/O Devices –>New Device .
• Device Communication Wizard Popup Will display –>Create I/O Server –>Next

–>Create a new I/O Device–>Next –>Slecet the type of I/O Device –>Next –>Select OPC Fountation –>OPC DA Client –>OPC–>Next–>Enter the address(CoDeSys.OPC.DA)–>Next–>Click the Checkbox in the Link I/O Device to an external tag database–>Database type–>Select OPC–>External Tag Database–>OPC Data Access Server Parameter Popup Will Display–>Select CoDeSys.OPC.DA–>PLC(This is the PLC name Created in OPC server)–>OK–>Next–>Finish.

• Now the PLC Tags will connect with SCADA
• Cilck Refresh Tags for further tags added in SoMachine Software.