BECKHOFF BK8000 User Manual
Page 23
Appendix
BK8000
23
Area for bit-oriented data,
digital outputs
Relative byte
address
Bit position
Process image in
the control unit
Position in the
block
12
0
O12
POS07
12
1
O12
POS07
12
2
O12
POS08
12
3
O12
POS08
12
4
O12
POS09
12
5
O12
POS09
12
6
O12
POS18
12
7
O12
POS18
13
0
O13
POS19
13
1
O13
POS19
Area for byte-oriented
data, analog inputs
Relative byte
address
Bit position
Process image in
the control unit
Position in the
block
0, 1
none
I0, I1
POS10
2, 3
none
I2, I3
POS13
Area for bit-oriented data,
digital inputs
Relative byte
address
Bit position
Process image in
the control unit
Position in the
block
4
0
I4
POS02
4
1
I4
POS02
4
2
I4
POS03
4
3
I4
POS03
4
4
I4
POS04
4
5
I4
POS04
4
6
I4
POS05
4
7
I4
POS05
5
0
I5
POS06
5
1
I5
POS06
5
2
I5
POS15
5
3
I5
POS15
5
4
I5
POS16
5
5
I5
POS16
5
6
I5
POS17
5
7
I5
POS17
The items POS14 and POS21 are not relevant to data exchange and do
not appear in the list. If a byte is not fully used, for example O13, the bus
coupler pads its remaining bits with zeroes.
Overview of the distribution of the process image in the bus coupler:
Output data
in the bus coupler
O0
...
byte-oriented
data
...
O11
O12
bit-oriented
data
O13