Telegrams And Process Data - Siemens SINAMICS DCM Operating Instructions Manual

10.2.5

Telegrams and process data

General information
Selecting a telegram via CU parameter p0922 determines which process data is transferred
between the master and slave.
From the perspective of the slave (SINAMICS DC MASTER), the received process data
comprises the receive words, and the process data to be sent comprises the send words.
The receive and send words comprise the following elements:
• Receive words:
• Send words:
User-defined telegram selection
a. Standard telegrams
Standard telegrams are structured in accordance with the PROFIdrive profile or internal
company specifications. The internal process data links are established automatically in
accordance with the telegram number setting in CU parameter p0922.
The following standard telegrams can be set via parameter p0922:
• p0922 = 1
• p0922 = 20
• p0922 = 352
b. Free telegrams (p0922 = 999)
Send and receive telegrams can be configured as required by using BICO technology to
interconnect the send and receive words. The default process data assigned under a) is
retained during the changeover to p0922 = 999, although it can be changed or
supplemented at any time.
To maintain compliance with the PROFIdrive profile, however, the following assignments
should be retained:
● Interconnect PZD receive word 1 as control word 1 (STW 1)
● Interconnect PZD send word 1 as status word 1 (STW 1)
Please refer to function diagrams FP2460 and FP2470 for details on interconnection options.
SINAMICS DCM Control Module
Operating Instructions, 06.2010, C98130-A7067-A1-02-7619
Control words and setpoints
Status words and actual values
→ Speed setpoint, 16-bit
→ Speed setpoint, 16-bit VIK-NAMUR
→ Speed setpoint, 16 PCS7
Descriptions of functions
10.2 PROFIBUS
313