WAGO 750 Series User Manual

Table of Contents • v
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler
5 Step-by-Step Guide to your own Linux Application.............................. 96
5.1 Installation of the Development Toolchain............................................96
5.2 Unpack the Source Code ........................................................................97
5.3 Linux Kernel Compilation......................................................................98
5.4 Setup of the Development Environment ..............................................100
5.4.1 PC Terminal Program Configuration (serial) ..................................101
5.4.2 PC Terminal Program Configuration (Ethernet) .............................103
5.5 Setting the IP address of the Linux Fieldbus Coupler.......................... 104
5.6 Create your own User Space Application ............................................105
5.7 Transferring the User Space Application to the Linux Coupler...........107
5.8 Running the new Program....................................................................108
5.9 Automatic start of new Programs (inittab/startwago) .......................... 108
5.10 File System and Linux Kernel Update .................................................110
5.10.1 TFTP Server Setup ..........................................................................111
5.10.2 TFTP Client Setup........................................................................... 112
5.11 NFS Server Setup .................................................................................116
5.12 Debugging of User Space Programs ....................................................117
5.12.1 Description of the GDB................................................................... 117
5.12.2 Preparation for Using the Debugger................................................118
5.12.3 Creating a Testable User Space Application ...................................119
5.12.4 Creating an Example Application for Debugging ........................... 121
5.12.5 Debugging via the GDB Console ....................................................122
5.12.6 Debugging via the Graphical Interface DDD .................................. 125
6 Process Image .......................................................................................... 127
6.1 Basic Structure .....................................................................................127
6.2 Example for an Input Process Image....................................................128
6.3 Example for an Output Process Image.................................................129
6.4 Application Example for a Mixed Node: .............................................130
6.5 Internal Bus Driver (kbus.ko)...............................................................131
6.6 Process Image Analysis via the /proc Directory ..................................135
7 I/O Modules .............................................................................................136
7.1 Overview ..............................................................................................136
7.1.1 Digital Input Modules......................................................................136
7.1.2 Digital Output Modules...................................................................138
7.1.3 Analog Input Modules.....................................................................139
7.1.4 Analog Output Modules ..................................................................141
7.1.5 Special Modules...............................................................................142
7.1.6 System Modules ..............................................................................144
7.2 Process Data Architecture for MODBUS/TCP....................................145
7.2.1 Digital Input Modules......................................................................145
7.2.2 Digital Output Modules...................................................................147
7.2.3 Analog Input Modules.....................................................................151
7.2.4 Analog Output Modules ..................................................................152
7.2.5 Specialty Modules ...........................................................................153
7.2.6 System Modules ..............................................................................165

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