A.1.1.4 Acyclic Communication - Siemens SINAMICS Configuration Manual

Parameter
p8839
Description:
Values:
For p8839, the following rules apply:
● The setting of p8839 applies for all drive objects of a Control Unit (device parameter).
● For the setting p8839[0] = 99 and p8839[1] = 99 (automatic assignment, factory setting),
the hardware used is automatically assigned to interfaces IF1 and IF2. Both indices must
be selected so that the automatic assignment is activated. If both indices are not selected,
then an alarm is output and the setting p8839[x] = 99 is treated just like 'inactive'.
● An alarm is issued if the same hardware (Control Unit onboard or COMM BOARD) is
selected in p8839[0] and p8839[1]. The following then applies: The setting of p8839[0] is
valid, and the setting of p8839[1] is treated like 'inactive'.
● If the CAN board CBC10 is used, the input of p8839[0] = 2 is not permitted. This means no
assignment of the CAN board to IF1. An alarm is then issued.
● If p8839[x] is set to 2, and the COMM BOARD is missing or defective, then the
corresponding interface is not supplied from the Control Unit onboard interface. Message
A08550 is output instead.
Overview of important parameters
Note
For a description of the parameters, see the converter List Manual.
Parameter
p0922
p0978[0...n]
p8815[0...1]
p8839[0...1]
A.1.1.4 Acyclic communication
General information about acyclic communication
With acyclic communication, as opposed to cyclic communication, data transfer takes place
only when an explicit request is made (e.g. in order to read and write parameters).
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Configuration Manual, 08/2017, A5E36912609A
PZD interface hardware assignment
Assigning the hardware for cyclic communication via PZD interface 1 and interface 2.
0: Inactive
1: Control Unit onboard
2: COMM BOARD
99: Automatic
Function
IF1 PROFIdrive PZD telegram selection
List of drive objects
IF1/IF2 PZD functionality selection
PZD interface hardware assignment
Communication
A.1 Communication
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