Allen-Bradley Interchange for Ethernet
Uses FastDDE

Platforms: Windows 3.11
Protocols: Ethernet, Data Highway, & Data Highway Plus.
Devices: PLC-2, PLC-3, 1785 PLC-5, and PLC 5/250.

The Wonderware Allen-Bradley Interchange I/O Server allows other Windows application programs access to data in PLCs attached to an Ethernet, Data Highway or Data Highway Plus network. While the I/O Server is primarily intended for use with Wonderware FactorySuite products, it may be used by any Microsoft Windows program capable of acting as a client.