PROFIBUS DP and PROFINET Objectives and outline Lecture ...
PROFIBUS DP and PROFINET Objectives and outline Lecture ... PROFIBUS DP and PROFINET Objectives and outline Lecture ...
Optic fibres • High‐interference environment, big distances • Different topologies – line, ring, redundant ring Service types • SRD –Send and Request Data with reply • SDA –Send Data with Acknowledge • SDN –Send Data with No acknowledge • CSRD – Cyclic Send and Request Data with reply Physical layer Link layer 17.10.2012 6
token PLC PLC class token 1 class token 1 master master PROFIBUS communication Medium access • Active stations are in logical ring –token • Passive station answer requests –master/slave • List of active stations –LAS • TS, NS, PS, adding/removing stations • Address space exploration • Detection of new stations, presence of passive stations • Token rotation time •T TR, T RR, T TH • Logical ring initialization Engineering tool class 2 master Cyclic exchange Acyclic exchange Link layer 17.10.2012 7
- Page 1 and 2: PROFIBUS DP and PROFINET Principles
- Page 3 and 4: • Main master -hierarchy - Master
- Page 5: Physical layer RS 485 • Asynchron
- Page 9 and 10: Set_Slave_Add Slave_Diag Chk_Cfg, n
- Page 11 and 12: PROFIBUS DP extended functions DP
- Page 13 and 14: OB86 - rack failure • Loss of com
- Page 15 and 16: Simatic S7 -OB86 • LB11 - Profibu
- Page 17: Thank you for your attention. Pavel
token<br />
PLC<br />
PLC<br />
class token 1<br />
class token 1<br />
master<br />
master<br />
<strong>PROFIBUS</strong> communication<br />
Medium access<br />
• Active stations are in logical ring –token<br />
• Passive station answer requests –master/slave<br />
• List of active stations –LAS<br />
• TS, NS, PS, adding/removing stations<br />
• Address space exploration<br />
• Detection of new stations, presence of passive stations<br />
• Token rotation time<br />
•T TR, T RR, T TH<br />
• Logical ring initialization<br />
Engineering tool<br />
class 2 master<br />
Cyclic exchange<br />
Acyclic exchange<br />
Link layer<br />
17.10.2012<br />
7
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