Extended functions
BK3xx080 Version: 4.3.0
Fig.48: Process images of the two different machine configurations
In order to solve the problem of the changed mapping rule, a facility is provided in the BK3110, BK3120 and
BK3520 Bus Couplers through which the mapping can be carried out in the Bus Coupler (multi-configuration
mode), so that they always exchange the same process image with the PROFIBUS DP master,
independently of the Bus Terminals present:
Setting the Bus Terminal extension in the Bus Coupler
So that the same process image can always be transferred between the PROFIBUS DP master and the Bus
Coupler, independently of the implementation level of the machine or of the Bus Terminals, the maximum
Bus Terminal implementation for the Bus Coupler is always configured in the PROFIBUS DP master under
multi-configuration mode. This PROFIBUS DP configuration is sent from the PROFIBUS DP master to the
Bus Coupler when the PROFIBUS DP bus is starting up. This then compares the received PROFIBUS DP
configuration with the bus terminals that are actually present.
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