VIPA CPU 21 Series, Руководство пользователя

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Manual VIPA CPU 21x Chapter 7 Deployment of the CPU 21xDP
HB103E - Rev. 05/45 7-13
Via a double-click at the CPU 21xDP in the hardware configurator from
Siemens, the following dialog window for configuring the Profibus slave
data areas appears:
Address, from where on the data coming from Profibus shall be stored in
the CPU, together with the according length.
The length value of 0 occupies no CPU memory space for the input area.
Address, from where on the data are stored that shall be send via Profibus.
here also you predefine the data length via
len .
The length value of 0 occupies no CPU memory space for the input area.
The parameter data are an extract of the parameter telegram. The
parameter telegram is created during the master configuration and is send
to the slave when:
•
the CPU 21xDP is in start-up
•
the connection between CPU 21xDP and master has been interrupted,
like e.g. short-time release of the bus connector.
A parameter telegram exists of Profibus-specific data (bus parameters) and
user specific data, where at the CPU 21xDP the in- and output bytes are
defined.
The user specific data (Byte 7...31) is mapped into the memory area of the
CPU with a fixed length of 24Byte, starting from the address fixed under
prm .
Thus you may proof the parameters your slave is getting from the master.
Description of
the parameter
data
input adr, len
output adr, len
prm. adr.