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3. Diagnostics and error handling
Byte
Input data
0
DI module 1 (channel 0 ... 7)
1
DI module 1 (channel 8 ... 15)
2
DI module 2 (channel 0 ... 7)
3
DI module 2 (channel 8 ... 15)
4
DI module 3 (channel 0 ... 7)
5
DI module 3 (channel 8 ... 15)
6
DI module 4 (channel 0 ... 7)
7
DI module 4 (channel 8 ... 15)
8
General diagnostics 1
General diagnostics 2
9
10
11
1) See Tab. 3/6 to Tab. 3/9
Tab. 3/4: Example of a process image with diagnostic mode 3
Festo P.BE-CPX-FB20/21-EN en 1202a
Diagnostic mode 3
2 byte diagnostics at the end of the process image of the in-
puts with 16 solenoid coils, 4 input modules (every 16 chan-
nels), 4 output modules (every 4 channels)
1)
1)
Output data
Coil 0 ... 7
Coil 8 ... 15
DO module 1 (channel 0 ... 3)
DO module 2 (channel 4 ... 7)
DO module 3 (channel 0 ... 3)
DO module 4 (channel 4 ... 7)
3-15
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