BECKHOFF BC8000 User Manual

Page 26

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Appendix

26

BC8000

Relative byte

address

Bit position

Controller
process image

Position in the
block

46 0

%IB46.0

POS01

46 1

%IB46.1

POS01

46 2

%IB46.2

POS02

46 3

%IB46.3

POS02

46 4

%IB46.4

POS03

46 5

%IB46.5

POS03

46 6

%IB46.6

POS04

47 7

%IB46.7

POS04

47 0

%IB47.0

POS05

47 1

%IB47.1

POS05

47 2

%IB47.2

POS06

47 3

%IB47.3

POS06

47 4

%IB47.4

POS15

47 5

%IB47.5

POS15

47 6

%IB47.6

POS16

47 7

%IB47.7

POS16

48 0

%IB48.0

POS17

Portion for bit-oriented
data, INPUT

48 1

%IB48.1

POS17

Relative byte

address

Bit position

Controller process
image

Position in the
block

46 0

%QB46.0

POS07

46 1

%QB46.1

POS07

46 2

%QB46.2

POS08

46 3

%QB46.3

POS08

46 4

%QB46.4

POS18

Portion for bit-oriented
data, OUTPUT

46 5

%QB46.5

POS18


Positions POS14 and POS21 are not relevant to data exchange. They do
not appear in the list. If a byte is not fully utilized, e.g. %QB46, the bus
terminal controller pads the remaining bits of the byte with zeros.

i

Note


If the KL6001-0020 is removed after successful programming of the
interface, all terminals after address 45 shift 6 bytes downward, that is to
address 40.

The distribution of the process image in the bus terminal controller in
overview:

Output data in the bus
terminal controller

O0
...

byte-oriented data

...
O45

O46.0

bit-oriented data

O46.5


Input data in the bus
terminal controller

I0
...

byte-oriented data

...
I45

I46.0
...

bit-oriented data

...
I48.2

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