WAGO 750 Series Manual page 5

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