WAGO 750 Series Manual page 6

vi • Table of Contents
8 Application Examples ............................................................................. 166
8.1
8.2
8.3
8.4
8.5
9 Bootloader (U-Boot) ................................................................................ 186
9.1
9.2
9.3
9.4
9.5
10 Fieldbus Communication........................................................................ 191
10.1 ETHERNET ......................................................................................... 191
10.1.1
10.1.2
10.1.2.1
10.1.2.2
10.1.2.3
10.1.2.4
10.1.2.5
10.1.3
10.1.3.1
10.1.3.2
10.1.3.3
10.1.3.4
10.1.3.5
LED Indication Example...................................................................... 167
Example kbusdemo .............................................................................. 171
Example of a Modbus TCP Server....................................................... 175
Example Program for a CGI Application............................................. 177
Example of Reading and Writing from the NVRAM .......................... 183
Boot Loader Toolchain......................................................................... 186
TFTP Server Setup ............................................................................... 187
Unpack the Source Code ...................................................................... 188
Compile Boot Loader ........................................................................... 188
Environment Variables......................................................................... 189
General............................................................................................. 191
Network Architecture - Principles and Regulations ....................... 192
Transmission Media.................................................................... 193
Network Topologies.................................................................... 195
Coupler Modules......................................................................... 198
Transmission Mode..................................................................... 198
Important Terms.......................................................................... 200
Network Communication................................................................. 202
Protocol layer model ................................................................... 202
Communication Protocols........................................................... 204
Channel access method ............................................................... 205
Administration and Diagnosis Protocols .................................... 212
Application Protocols.................................................................. 217
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler