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W&T Interfaces
for TCP/IP, Ethernet, RS-232, RS-485, USB, 20mA,
Glass and plastic fiber optic cabled, http, SNMP, OPC, Modbus TCP, I/O digital, I/O analog, ISA, PCI

Background information:

Network and serial interface basics

Information for downloading:

Detailed information about serial and parallel interfaces:

Background information for Web-IO Digital:


More background information:

For the technical background, also see: specialist articles