Siemens SIDOOR ATD401W - Parameter Value (PWE); Parameter ID

A.1.1.3 Parameter value (PWE)
The number of PWEs can vary according to the con󹪝guration. The number can be con󹪝gured in
parameter p2023 (Number of PKWs).
A PKW channel width of at least 3 words is required to transfer 16-bit values. This means that
PWE1 is provided.
If 32-bit values are transferred, the PKW channel has to be expanded to 4 words.
Correspondingly, PWE1 and PWE2 are then available.
Note
Variable PKW proportions and variable telegram lengths are not currently supported. This means
that description texts, texts and complete arrays cannot be transferred.
Note
If a 16-bit value is transferred in a 32-bit channel in the PWE2, then the content of PWE1 is 0.
Structure
Table A-8 32-bit PKW channel
32-bit parameter channel (PKW)
Word 1 Word 2 Word 3 Word 4
PKE IND PWE1 PWE2
Table A-9 16-bit PKW channel
16-bit parameter channel (PKW)
Word 1 Word 2 Word 3
PKE IND PWE1
Table A-10 Variable PKW channel
Variable parameter channel (PKW)
Word 1 Word 2 Word 3 … Word x
1)
PKE IND PWE1 PWEx
1)
1)
0 < x < (124 - "number of PZDs")
A.1.1.4 Parameter ID
The parameter ID comprises the PNU (array within PKE) and the page index (array within IND).
In general, the parameter ID name is simpli󹪝ed to just PNU (parameter number).
Appendices
A.1 Structure of user data/process data
ATD4xxW for industrial applications
System Manual, 06/2022, A5E51901827B AA 315