The Phoenix Contact 2402684 is the PC WORX UA SERVER-PLC 10 driver and interface software. 

Functionality: OPC UA server for communication with up to 10 modular small-scale controllers (AXC 1xxx or ILC 1x1)

License Type: Single-user runtime license

Security: Supports multiple security profiles, including Basic128RSA15 and Basic256

Communication: Uses TCP/IP binary protocol for efficient data exchange

Supported Data Types: BOOL, BYTE, INT, DINT, UINT, SINT, USINT, UDINT, WORD, DWORD, REAL, LREAL, STRING, TIME (IEC 61131)

Variable Mapping: Automatically synchronizes variable names from the current project

Diagnostics: Provides active communication diagnostics via a user-friendly configurator