BECKHOFF BC3100 - Manual (Page 42)

Annex
42 BC3100
Annex
Example: a process image in the bus
terminal controller
An example explains the assignment of the input and output channels to
the PLC process image. The example set up is to consist of the following
bus terminal modules.
Whether the data of the analog terminals is to be evaluated completely (i.e.
with control/status byte), or whether only the user data is evaluated, is set
in the bus terminal controller. Evaluation with control/status byte (complete
evaluation) is the default.
In this configuration, the bus terminal controller creates the following
allocation lists:
Position Function module on the rail
POS01 Bus terminal controller
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
Analog terminals with user data only (no default setting)
All terminals are assigned to the process image of the PLC task. Analog
terminals are mapped with user data only. Part for byte-oriented outputs:
Position in
block
PLC task
Process image Description
POS11 QW0 Output signal 1 st channel
POS11 QW2 Output signal 2
nd
channel
POS12 QW4 Output signal 1 st channel
POS12 QW6 Output signal 2
nd
channel
POS20 QW8 Output signal 1
st
channel
POS20 QW10 Output signal 2
nd
channel