Siemens SINAMICS DCM Manual page 381

Descriptions of functions
10.3 Communication according to PROFIdrive
● Supervisor (PROFIBUS: Master Class 2, PROFINET IO: IO Supervisor)
Devices for configuring, commissioning, operator control and monitoring while the bus is
in operation – and
devices, which only exchange non-cyclic data with drive units and controllers.
Examples: Programming devices, human machine interfaces
Communication services
Two communication services are defined in the PROFIdrive profile; namely, cyclic data
exchange and acyclic data exchange.
● Cyclic data exchange via a cyclic data channel:
Motion control systems require cyclically updated data in operation for open-loop and
closed-loop control tasks. This data must be sent to the drive units in the form of
setpoints or transmitted from the drive units in the form of actual values, via the
communications system. Transmission of this data is usually time-critical.
● Acyclic data exchange via an acyclic data channel:
An acyclic parameter channel for exchanging parameters between the
controller/supervisor and drive units is additionally available. Access to this data is not
time-critical.
● Alarm channel
Alarms are output on an event-driven basis, and show the occurrence and expiry of error
states.
Interface IF1 and IF2
The Control Unit CUD can communicate via two separate interfaces (IF1 and IF2).
Table 10- 5
PROFIdrive
Standard telegrams
Isochronous mode
Drive object types
Can be used for
Cyclic operation possible
PROFIsafe possible
Note
For additional information on the IF1 and IF2 interfaces, see Chapter Parallel operation of
communication interfaces (Page 412).
382
Properties of IF1 and IF2
IF1
Yes
Yes
No
All
PROFINET IO, PROFIBUS DP
Yes
Yes
ac.maher.co.ir
IF2
No
No
No
All
PROFINET IO, PROFIBUS DP,
CANopen
Yes
Yes
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001