Parameterization and commissioning
CX8030 / CX8031
43
Version: 1.6
To do this, go to the variable that you wish to turn, select Flags and tick the option that you need. In the case
of WORD variables you can only swap the LO and HI byte, in the case of DWORDs you can additionally
swap the WORD.
Example: for DWORD
(Intel format)
6.3.3.2.3
Virtual slave interface for PROFIBUS
The virtual slave interface enables the creation of up to three virtual slaves on the same hardware interface.
This enables the user to exchange more data with a PROFIBUS master or also to establish a connection
with a second PROFIBUS master.
A maximum of 240 bytes of data can be configured for each slave, i.e. in total you can exchange 4 x 240
bytes of data in each direction.
Append a maximum of four CX8031 devices to your PROFIBUS device (fig. 1.0). Each of these devices is
given a PROFIBUS address via the System Manager which can also be linked with the address selector (
). Append the process data under the box (figs. 1.1 and 1.2); these may not exceed 240
bytes of input data of 240 bytes of output data. For the PROFIBUS master configure each of the four slaves
like an independent device.
It is also permitted to connect one or more slaves to a second PROFIBUS master. The master must support
the multi-master capability. You do not need to make any further settings on the CX8031 for this.
Fig. 1.0 Creation of the 4 PROFIBUS slave devices
