Siemens SINAMICS DCM Manual page 384

10.3.2 Cyclic communication
Cyclic communication is used to exchange time-critical process data.
10.3.2.1 Telegrams and process data
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 represents 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
PROFIdrive telegrams
● Standard telegrams
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
– 20 Speed setpoint, 16-bit VIK-NAMUR
● Manufacturer-specific telegrams
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:
– 220 Speed setpoint, 32-bit for metal industry
– 352 Speed setpoint, 16-bit, PCS7
– 390 Control Unit with digital inputs/outputs
● Free telegrams (p0922 = 999)
The send and receive telegrams can be configured as required by using BICO technology
to interconnect the send and receive process data.
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
10.3 Communication according to PROFIdrive
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Descriptions of functions
385