4 Commissioning
4.6 Cyclic data
DX-NET-PROFINET2-2
01/22 MN040062EN
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4.6 Cyclic data
4.6.1 Introduction
Figure 27:
Data exchange of process data
The amount of cyclical input and output data (process data) for the variable
frequency drive/variable speed starter can be adjusted as necessary for the
application at hand by using the various profiles. The profiles are selected in
the hardware/control configuration (e.g. in the TIA Portal program).
Table 5:
Profiles
Telegram
Profile name
Data length
Standard Telegram 1
ProfiDrive
2 x 16-bit
Vendor specific 1000
PDShort
8-bit + 2 x 16-bit
Vendor specific 999
Transparent Mode
2 x 16-bit
￫
NOTES ON NAMING CONVENTION USED THROUGHOUT THE
PROGRAM
Input
data are data that come from the control/PLC and enter
the device, i.e. the variable frequency drive. Specifically set-
points.
“Input…”: PLC -> variable frequency drive/variable speed
starter
Output
data are data that come from the device, i.e. from the
variable frequency drive (are “read out”) and enter the control/
PLC. Specifically actual values and status values.
The same applies to input bytes or output bytes.
“Output…”: variable frequency drive/variable speed starter
-> PLC
