Cyclic Communication; Telegrams And Process Data - Siemens SINAMICS S120 Function Manual

Communication PROFIBUS DP/PROFINET IO
10.1 Communication according to PROFIdrive
10.1.3

Cyclic communication

Cyclic communication is used to exchange time-critical process data.
10.1.3.1

Telegrams and process data

General information
When a telegram is selected via p0922, the drive unit (Control Unit) process data that is
transferred is determined.
From the perspective of the drive unit, the received process data comprises the receive
words and the process data to be sent the send words.
The receive and send words comprise the following elements:
● Receive words: Control words or setpoints
● Send words: Status words or actual values
What telegrams are available?
1. Standard telegrams
2. Manufacturer-specific telegrams
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The standard telegrams are structured in accordance with the PROFIdrive Profile. The
internal process data links are set up automatically in accordance with the telegram
number setting.
The following standard telegrams can be set via p0922:
– 1 Speed setpoint, 16 bit
– 2 Speed setpoint, 32 bit
– 3 Speed setpoint, 32 bit with 1 position encoder
– 4 Speed setpoint, 32 bit with 2 position encoders
– 5 Speed setpoint, 32 bit with 1 position encoder and DSC
– 6 Speed setpoint, 32 bit with 2 position encoders and DSC
– 7 Positioning, telegram 7 (basic positioner)
– 9 Positioning, telegram 9 (basic positioner with direct input)
– 20 Speed setpoint, 16 bit VIK-NAMUR
The manufacturer-specific telegrams are structured in accordance with internal company
specifications. The internal process data links are set up automatically in accordance with
the telegram number setting.
The following vendor-specific telegrams can be set via p0922:
– 102 Speed setpoint, 32 bit with 1 position encoder and torque reduction
– 103 Speed setpoint, 32 bit with 2 position encoders and torque reduction
– 105 Speed setpoint, 32 bit with 1 position encoder, torque reduction and DSC
– 106 Speed setpoint, 32 bit with 2 position encoders, torque reduction and DSC
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions