BECKHOFF BK3000 User Manual
Page 39
Appendix
BK3xxx/LC3100
39
Area for bit-oriented data,
digital outputs
Relative byte
address
Bit position
Process image in
the control unit
Position in the
block
12
0
%QB12
POS07
12
1
%QB12
POS07
12
2
%QB12
POS08
12
3
%QB12
POS08
12
4
%QB12
POS09
12
5
%QB12
POS09
12
6
%QB12
POS18
12
7
%QB12
POS18
13
0
%QB13
POS19
13
1
%QB13
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
%IB0, %IB1
POS10
2, 3
none
%IB2, %IB3
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
%IB4
POS02
4
1
%IB4
POS02
4
2
%IB4
POS03
4
3
%IB4
POS03
4
4
%IB4
POS04
4
5
%IB4
POS04
4
6
%IB4
POS05
4
7
%IB4
POS05
5
0
%IB5
POS06
5
1
%IB5
POS06
5
2
%IB5
POS15
5
3
%IB5
POS15
5
4
%IB5
POS16
5
5
%IB5
POS16
5
6
%IB5
POS17
5
7
%IB5
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 A13, 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