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<< Click to Display Table of Contents >> OPC Client |
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OPC is a Defaultised interface between different software applications and drivers of different hardware modules (e.g. PLC).
Multiple OPC-Clients can connect to one OPC-Server.
A (special) OPC-Server will often be provided by the common PLC manufacturers.
In the below sample a Festo EasyPort will be connected to RobotinoView via the free Festo EzOPC-Server.
The EzOPC-Server allocates the in-/outputs of up to 4 EasyPorts using so called "Groups" and "Tags":
| • | Device1 shows as group "EasyPort1" |
| • | Output 1 therefore shows as Tag "EasyPort1.OutputPort1" |
Please follow these steps:
1. Install the EzOPC-Server.
2. Start the EzOPC Server and choose "Process Simulation…" and "PLC via EasyPort".
3. Start RobotinoView.
4. Add the "OPC Client" device.
5. From the device dialog's context menu select Predefined settings 
"Festo EzOPC EasyPort". The default values for the EasyPort will be loaded.
6. If needed select "FestoDidactic.EzOPC.1".
7. Start the connection.
8. Use the OPC Client function blocks to access the OPC-data of the EasyPort's in-/outputs.
Hint: if you would like to use a PLC of a different manufacturer you need a OPC server or OPC client of this manufacturer. Use an OPC client to see which tags are available on your PC's OPC server.
Downloads and additional information can be found at http://www.opcconnect.com/