BECKHOFF BK4000 - Manual (Page 24)

Annex
24 BK4000
Annex
Example: combination of a process image
in the bus coupler
An example explains the affiliations of the input and output channels to the
process image. Our example setup should consist of the following bus
terminal modules:
In this configuration, the
Position Function module on the busbar
bus coupler creates the POS00 Bus coupler
allocation list that POS01 Digital inputs, 2 channels
follows below POS02 Digital inputs, 2 channels
POS03 Digital inputs, 2 channels
POS04 Digital inputs, 2 channels
POS05 Digital inputs, 2 channels
POS06 Digital inputs, 2 channels
POS07 Digital outputs, 2 channels
POS08 Digital outputs, 2 channels
POS09 Digital outputs, 2 channels
POS10 Analog inputs, 2 channels
POS11 Analog outputs, 2 channels
POS12 Analog outputs, 2 channels
POS13 Analog inputs, 2 channels
POS14 Infeed terminal
POS15 Digital inputs, 2 channels
POS16 Digital inputs, 2 channels
POS17 Digital inputs, 2 channels
POS18 Digital outputs, 2 channels
POS19 Digital outputs, 2 channels
POS20 Analog outputs, 2 channels
POS21 End terminal
By default, InterBus, DeviceNet and Profibus couplers only map signal
channels of 16-bits width. The CONTROL/STATUS BYTE is not available.
That is to say, an analog input terminal with 2 channels, for example, ap-
pears in the process image with 2 x 16 bits. The figures showing the byte
addresses and the affiliations differ correspondingly when CON-
TROL/STATUS is activated.
Part for byte-oriented data,
analog outputs
relative
byte address Bit position Process image in
the controller Position in the
block
0, 1 none A0, A1 POS11
2, 3 none A2, A3 POS11
4, 5 none A4, A5 POS12
6, 7, none A6, A7 POS12
8, 9 none A8, A9 POS20
10, 11 none A10, A11 POS20