Process Image Analysis Via The /Proc Directory - WAGO 750 Series Manual

6.6 Process Image Analysis via the /proc Directory

In order to analyze the input and output data while the internal bus driver is
running, it is possible to view and to read out the process image of the relevant
modules via the /proc/driver/kbus/pab file. The start address
Byteoffset.Bitoffset of the individual process image is shown.
Example: cat /proc/driver/kbus/pab
Slot
8
9
---------------------------------------------------------
1
2
3
4
5
6
7
---------------------------------------------------------
PAB In:
PAB Out:
Slot
Terminal
x.x
PAB IN, PAB OUT
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler
Process Image Analysis via the /proc Directory
Terminal
750-553/000-000
750-559/000-000
750-4xx
750-4xx
750-4xx
750-4xx
750-4xx
750-4xx
750-4xx
00ffe060
00ffe858
Position after the Linux coupler
Item number
No data in the input process image
Base addresses of the process images
Output:
Byte.Bit Offset
0.0
6.0
x.x
x.x
x.x
x.x
x.x
x.x
x.x
PAB Size: 2040 bytes
PAB Size: 2040 bytes
Process Image • 135
Input:
Byte.Bit Offset
x.x
x.x
0.0
0.4
0.6
1.0
1.2
1.4
1.6