WAGO 750 Series User Manual

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

WAGO 750 Series Specifications

General

Protection Class	IP20
Bus Couplers	PROFIBUS, CANopen, Ethernet
Modules	Digital Input, Digital Output, Analog Input, Analog Output
Mounting	DIN rail mounting
Voltage Supply	24 V DC (typical)
Communication Protocol	Depends on the bus coupler (e.g., PROFIBUS, CANopen, DeviceNet, Ethernet)
Digital Input Channels	Varies by module (e.g., 8, 16 channels)
Digital Output Channels	Varies by module (e.g., 8, 16 channels)
Analog Input Channels	Varies by module (e.g., 2, 4, 8 channels)
Analog Output Channels	1, 2, 4 channels (depending on module)
Width	12 mm, 24 mm (typical module widths)
Number of Channels	Varies by module type
Current Consumption per Channel	Varies by module type