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Overview of the DP Base Interface
3.8
Properties of the CP 5614 (Slave Functions, Transfer
Software)
Interaction Between the Master and Slave Functions
The DP master and slave on the CP 5614 can be operated together or singly.
"Simple Slave" Mode
In this mode, all the data necessary to include the slave module in the data
exchange are transferred to the CP when the DPS_open (...
slave_mode=DPS_SM_SIMPLE ...) function is called. The advantage of this is that
the user program can read outputs and write inputs simply without checking the
state of the slave module and without checking the parameters and configuration
data.
"Dynamic Slave" Mode
In this mode, the slave can set itself dynamically to the configuration of its master.
With the DPS_open() call, "DPS_SM_SIMPLE" is not selected. The user is
informed when parameter and configuration data are received. It then checks
whether it accepts the settings. This allows greater flexibility, particularly when the
slave has a modular structure. In this case, the view of the master can be
compared with the actual configuration of the slave.
Transfer Software
You are supplied with sample software with which the data can be routed between
various slaves of the master section and the slave module. This is particularly
advantageous in applications in which the master section is used to control a
separate bus and the PC is connected, for example,to a control computer via the
slave module.
58
DP Base Programming Interface for CP 5613/CP 5614
C79000-G8976-C108-02
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