OPC Client - DA
General
| Driver | Protocol | Protocol standard / version | Official protocol certification | Included in Base License Package? | Additional Licensing Requirements | License Key (Code Meter) | Operating System |
|---|---|---|---|---|---|---|---|
| OPC Client (DA) | OPC Data Access | Data Access 1.0 | Data Access 2.05a | ❌ | ✔ | IO based | OPC Client | Windows |
Network
| Driver | Encrypted communication to periphery device | Client Or Server / TCP or UDP | Default Port | Firewall Direction |
|---|---|---|---|---|
| OPC Client (DA) | ❌ | COM(local) or DCOM(with Server/Client on different hosts | - | - |
Configuration Details
| Driver | Recommended/technical limit of connections per driver | Multiple driver instances | Redundant network | Redundant devices | Special hardware requirements |
|---|---|---|---|---|---|
| OPC Client (DA) | 10 | ✔ | ❌ | ❌ | ❌ |
Communication
| Driver | Polling | Poll on use | Single query | Unsolicited communication | Driver redundancy: Only active driver polls | Buffering1 |
|---|---|---|---|---|---|---|
| OPC Client (DA) | ❌ | ❌ | ✔ | ✔ | ❌ | ❌ |
Engineering
| Driver | Direct browsing of configuration/address data from connected devices | Import functionality of configuration/address data from external tools | Deletion of internal connection DP is supported |
|---|---|---|---|
| OPC Client (DA) | ✔ | ❌ | ❌ |
Special Telegrams
| Driver | Native alarm transfer from connected devices / PLCs | Connection establishment without active address |
|---|---|---|
| OPC Client (DA) | ❌ | ✔ (Server needs to be configured within the config file) |
Timestamps and Synchronization
| Driver | Timestamp transfer from periphery device | Time synchronization (WinCC OA to PLC) |
|---|---|---|
| OPC Client (DA) | ✔ | ❌ |