Data Exchange With The Profibus-Dp Fieldbus Protocol; Brief Overview Of The Function Range; Control Commands - Festo CTEU-PB Electronics Description

2. Commissioning

2.1.2 Data exchange with the PROFIBUS-DP fieldbus protocol

2.1.3 Brief overview of the function range

2.1.4 Control commands

Festo P.BE-CTEU-PB-OP+MAINT-EN en 1208NH English
The fieldbus protocol PROFIBUS-DP uses a communication
profile to regulate how data is exchanged among the fieldbus
stations. Cyclical and acyclic data exchange are differentiated
thereby.
– General communication and diagnostic messages about
cyclical/synchronous data exchange (DPV0)
– Acyclic/asynchronous data exchange (DPV1)
– Diagnostics
– Process Data
The operating modes FREEZE, SYNC and CLEAR_DATA are
supported by the bus node in accordance with the PROFIB-
US-DP standard.
The method of accessing these commands depends on the
controller used. Corresponding information can be found in
your controller's documentation.
Information on DPV1 commands can be found in chap. A.2 in
Appendix A.
2-5