Appendix A Specifications
6F8C1259
A.3 PA912 Transmission Specifications
Table A-4 PA912 transmission specifications
PROFIBUS standard EN50170, IEC61158
PROFIBUS protocol version DP-V0
Topology Bus topology
Number of transmission stations
(including the PA912)
Up to 32 stations/segments (no repeater)
Up to 124 stations (up to 9 repeaters)
Data transmission speed 9.6 kbps-12 Mbps
Physical layer RS-485 (with photocoupler isolation)
Transmission code Manchester code
Modulation method Baseband
Access method Token passing
Transmission service Cyclic transmission
Input: 768 words + RAS information 35 words
Output: 768 words
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