Troubleshooting guide
2 Hardware Configuration Reference Guide
What operating system am I using?
There are five operating systems that are referenced in this document.
MS-DOS
Windows 3.x
Windows for Workgroups 3.x
Windows 95
Windows NT
What communication network am I using?
There are seven local area networks (LANs) that are used to transfer data that are
referenced in this document.
LAN Description
Data Highway
(DH)
An Allen-Bradley floating-master baseband local area
network.
Data Highway Plus
(DH+)
An Allen-Bradley token-passing baseband local area network.
Data Highway II
(DHII)
An Allen-Bradley token-passing carrier-band local area
network.
Data Highway 485
(DH485)
An Allen-Bradley token-passing baseband link for a local
area network based on the RS-485 standard.
ControlNet An Allen-Bradley open control network that uses the
producer/consumer model to combine the functionality of
an I/O network and a peer-to-peer network.
DeviceNet An open communication network designed to provide an
interface through a single cable from a PLC processor
directly to devices such as sensors, pushbuttons, and drives.
Ethernet A local area network with a baseband communication rate of
10Mbits/second.