Technical data

In ZP (cyclic I/Os) communication (CP 5430 TF), I/O areas of certain
passive stations are assigned by configuring their L2 address and the
remote SAP.
In DP (distributed I/Os) communication, I/O areas of certain passive stations
are assigned simply by configuring their L2 address.
PLC
Input area
Output
area
CP
SAP
Input
buffer
Output
buffer
Field
device
SAP
L2 bus
Active station Passive station
Fig. 3.8 Addressing Model for Communication with ZP
PLC
Input
area
Output
area
Input
area
Output
area
Field
device
L2 bus
Station active (DP master)
Station passive/active (DP slave)
CP
DP polling
list
Fig. 3.9 Addressing Model for Communication with DP
Fundamentals of the Model B8976060/02
Volume 1 3 - 10