Siemens SINAMICS S150 - Telegrams and Process Data

Operation
6.6 PROFIBUS
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A
205
6.6.4 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), 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 and setpoints
• Send words:
Status words and actual values
Default setting "Profidrive"
When the "Profidrive" default setting is chosen for command and setpoint selection (see
"Command sources / "Profidrive" default settings"), "Free telegram" (p0922 = 999) is
selected.
The receive message frame is parameterized as follows as a result of the default setting
(plan 622):
STW 1 N_SETP
The send telegram is parameterized as follows (factory setting, plan 623):
ZSW 1 N_ACT I_IST M_ACT P_ACT Fault
You do not have to make any further settings in order to use these telegrams.
User-defined telegram selection
a. Standard telegrams
Standard telegrams are structured in accordance with PROFIdrive profile V3 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
-> Speed control, 2 words
• p0922 = 2
-> Speed control, 4 words
• p0922 = 3
-> speed control, 1 position encoder
• p0922 = 4
-> speed control, 2 position encoders
• p0922 = 20
-> NAMUR telegram
• p0922 = 352
-> PCS7 telegram