Rockwell Automation 1757-FFLD Linking Device Configuration Manual - Manual (Page 30)

Publication 1757-PM002A-EN-E - June 2006
2-20 Set Up A System
Figure 2.13 Bad Network Signal Due to Three Terminators (1)
Network Basics When using the linking device, there are two networks that must be
considered: the HSE network and the H1 network.
HSE
HSE stands for High Speed Ethernet. HSE is the Fieldbus Foundation's
backbone network running Ethernet and IP. An HSE field device is a fieldbus
device connected directly to a High Speed Ethernet (HSE) fieldbus. Typical
HSE field devices include HSE linking devices, HSE field devices running
function blocks (FBs), and host computers.
IP Addresses
Every device that communicates over the Internet is assigned an IP address
that uniquely identifies the device and distinguishes it from other devices on
the Internet. An IP address consists of 32 bits, often shown as 4 octets of
numbers from 0-255 represented in decimal form instead of binary form.
For example, the IP address 168.212.226.204 in binary form is
10101000.11010100.11100010.11001100.
It is easier to remember decimals as opposed to binary numbers, so we use
decimals to represent the IP addresses when describing them. However, the
(1) Additional material for ëPhysical Mediaí section taken from FF Engineering
Guidelines, Relcom's Fieldbus Wiring and Test Solutions Guide
(WWW.Relcominc.com), and Foundation Fieldbus Project Implementation
Considerations (Power point Slide by John Yingst at Honeywell)