The DP master can be served with bus parameters by means of a hardware configura-
tion. As soon as these are transferred the DP master goes online with his bus parameter
.
This is shown by the status bar. Now the DP master can be contacted via PROFIBUS by
means of his PROFIBUS address. In this state the CPU can be accessed via PROFIBUS
to get configuration and DP slave project.
If the master has received valid configuration data, he switches to Data Exchange with
the DP slaves. This is indicated by the green DE LED (serial port).
After PowerON respectively a receipt of a new hardware configuration the configuration
data and bus parameter were transferred to the DP master. Dependent on the CPU state
the following behavior is shown by the DP master:
Master behavior at CPU STOP
n The global control command "Clear" is sent to the slaves by the master. Here the DE-
LED is blinking.
n DP slaves with fail safe mode were provided with output telegram length "0".
n DP slaves without fail safe mode were provided with the whole output telegram but
with output data = 0.
n The input data of the DP slaves were further cyclically transferred to the input area of
the CPU.
Master behavior at CPU RUN
n The global control command "Operate" is sent to the slaves by the master
. Here the
DE LED (serial port) is on.
n Every connected DP slave is cyclically attended with an output telegram containing
recent output data.
n The input data of the DP slaves were cyclically transferred to the input area of the
CPU.
Online with bus parameter
without slave project
Slave configuration
CPU state controls DP
master
VIPA System MICRO
Option: Deployment PROFIBUS communication
Commissioning and Start-up behavior
HB400 | CPU | M13-CCF0000 | en | 16-47 177
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