Lenze 2130IB - Manual (Page 12)

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1.1.1. Explanations about PROFIBUS-DP
PROFIBUS-DP is the variant for sensors/actors, when a higher
process response is required. PROFIBUS-DP connects the central
automation devices, like for example programmable logic controllers,
via a fast serial connection using decentral input and output devices,
sensors and actors such as controllers.
The main task of the PROFIBUS-DP system is the fast cyclic data
exchange between the central automation device (master) and the
peripherial devices (slaves); see figure "standard structure".
Standard structure
DP
Slave Slave
Master
Slave
The explanation of the PROFIBUS-DP functions of the Lenze
controller can be obtained from the paragraph "Operating mode
PROFIBUS-DP" (page 35).