Siemens SINAMICS S120 Function Manual page 538

Applications
11.2 Parallel operation of communication interfaces for CU320
Additional parameters for IF2
To permit a better use of the IF2 also for a PROFIBUS / PROFINET connection, the
following extensions of the parameter list are available:
Infeeds:
r8850, p8851, r8853
Additional diagnostic parameters (meaning of 88xx identical with 20xx):
r8874, r8875, r8876
Additional binector-connector converter (meaning of 88xx identical with 20xx):
p8880, p8881, p8882, p8883, p8884, r8889
Additional conector-binector converter (meaning of 88xx identical with 20xx):
r8894, r8895, p8898, p8899
Note
It is not possible in the HW Config configuration tool to represent a PROFIBUS / PROFINET
slave with two interfaces. In parallel operation, the SINAMICS will therefore appear twice in
the project or in two projects although there is only one physical device.
Parameter
p8839 PZD Interface hardware assignment
Description: Assigns the cyclic interface a hardware interface.
Index 0: Assignment for interface 1 (IF1)
Index 1: Assignment for interface 2 (IF2)
Values: 0: not active
1: ONBOARD hardware
2: COMM BOARD
99: Automatic (assignment according to plugged HW, compatible setting)
The following rules apply to the setting of p8839:
● The setting of p8839 applies to all DOs of a CU (device parameter).
● For the setting p8839(0) = 99 and p8839(1) = 99 (automatic assignment, default), the
● An alarm is issued if the same hardware (onboard or COMM board) is selected in
● With the CAN module plugged (CBC10), an entry of p8839(0) = 2 is invalid (no
● With the setting p8839(x) = 2 and the COMM board missing / defective, the respective
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assignment will be made on the basis of the plugged hardware. To render this automatic
assignment active, it must be selected for both indexes; otherwise an alarm is generated,
and the setting p8839(x) = 99 is treated in the same manner as 'not active'.
p8839(0) and p8839(1). In this case, the setting of p8839(0) is effective. The setting of
p8839(1) is treated as 'not active'.
assignment of CAN module to IF1). An alarm is issued.
interface is not automatically fed by the onboard interface. Instead, an alarm is issued.
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions