Fundamentals of PROFIBUS-PA
A-6
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
Bus terminating element for PROFIBUS-PA
To ensure trouble-free operation, the end of a PROFIBUS-PA line must have a bus
terminating element.
Use an RC element in series connection for the bus terminating element
(R = 100
$
2 %; C = 1
µ
F
$
20 %). For components, see Appendix D.
Spur line
The maximum permissible spur line lengths are listed in Table A-1. Note also the
maximum length of the aggregate line (see above).
Table A-1
Spur line length for the DP/PA coupler
Number of spur lines
Maximum length of a spur line
DP/PA coupler
DP/PA coupler Ex [i]
1 to 12
Max. 120 m
Max. 30 m
13 to 14
Max. 90 m
Max. 30 m
15 to 18
Max. 60 m
Max. 30 m
19 to 24
Max. 30 m
Max. 30 m
Содержание Simatic 6ES7 157-0AC80-0 A0 Series
Страница 14: ...Contents xiv DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 42: ...Installation 3 12 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 70: ...Commissioning the DP PA Link 6 12 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 162: ...Technical Specifications B 40 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 170: ...Order Numbers and Accessories D 4 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 178: ...Glossary Glossary 8 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 182: ...Index Index 4 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...