Cyclic Communication; Standard Telegram Structure - Siemens SINAMICS CU240S DP-F Operating Instructions Manual

Communication

6.2 Cyclic Communication

6.2 Cyclic Communication
Telegrams
The selection of a telegram via P0922 determines on the drive unit side which process data
is transferred between master and slave.
From the perspective of the slave, there are receive words and send words.
The receive and send words comprise the following elements:
● Receive words Control words or setpoints
● Send words Status words or actual values
Used telegram types
The following telegrams can be set via parameter P0922:
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.
● Telegram 1
● Telegram 20 Speed control, 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.
● Telegram 350 Speed control, 4 words
● Telegram 352 Speed control, PCS7
● Telegram 353 Speed control, PKW 4/4 and PCD 2/2
● Telegram 354 Speed control, PKW 4/4 and PCD 6/6
Device-specific telegrams
The send and receive telegrams can be configured as required by using BICO technology to
interconnect the send and receive process data.
● Telegram 999 Free interconnection via BICO (up to 8 data words)
6.2.1

Standard Telegram Structure

BICO connection
When a telegram is selected, the corresponding BICO connection parameters will be fixed
and cannot be changed (except P0701 and the following digital inputs). If P0922 = 999, it
keeps the actual BICO connection parameters but now BICO parameters can be changed.
128
Speed control, 2 words
Operating Instructions, 07/2008 - FW 3.2, A5E00766042B AD
Control Units CU240S