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©Contrinex 2013 - JDC PPT_LF_Fieldbus Fieldbus J.-D. Chatelain.

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Presentation on theme: "©Contrinex 2013 - JDC PPT_LF_Fieldbus Fieldbus J.-D. Chatelain."— Presentation transcript:

1 ©Contrinex JDC PPT_LF_Fieldbus Fieldbus J.-D. Chatelain

2 Fieldbus Master RWM Interface 1 RWM 1RWM 2RWM 3RWM 4 11 RWM 1 Interface 2 22 RWM 1 Interface 3 RWM 3RWM 4 RWM 2 33 Power supply

3 Fieldbus Master RWM Interface 1 RWM 1RWM 2RWM 3RWM 4 11 RWM 1 Interface 2 22 RWM 1 Interface 3 RWM 3RWM 4 RWM 2 33 Power supply

4 Fieldbus Master RWM Interface 1 RWM 1RWM 2RWM 3RWM 4 11 RWM 1 Interface 2 22 RWM 1 Interface 3 RWM 3RWM 4 RWM 2 33 Power supply

5 Fieldbus Master RWM Interface 1 RWM 1RWM 2RWM 3RWM 4 11 RWM 1 Interface 2 22 RWM 1 Interface 3 RWM 3RWM 4 RWM 2 33 Power supply

6 ©Contrinex JDC PPT_LF_Fieldbus Example: Read 4 words from address 10 J.-D. Chatelain

7 X X "R" "D" Power supply Fieldbus New command X X X Lire 4 mots à partir de l'adresse RWM2 Read Tag EM4056 From address 10 4 words irrelevant RWM2 No interface error No RWM error irrelevant No data 01 Tags in front of RWM1 and RWM2Acknowledgment PHASE 1 Master RWM RWM 2RWM 3 RWM 4 Slave

8 Command completed X X "R" "D" Power supply Fieldbus X X X Lire 4 mots à partir de l'adresse RWM RWM 2RWM 3 RWM 4 Slave 01 irrelevant Understood, end of communication irrelevant PHASE 1 Master

9 Number of words Power supply Fieldbus New command Data + protections Lire 4 mots à partir de l'adresse "R" "P" RWM2 Reply irrelevant RWM2 No interface error No RWM error Data RWM 1RWM 2RWM 3 RWM 4 Slave DATA 2 (début) 00 Tags in front of RWM1 and RWM2Releasing of data 1 DATA 1 0 X X X X X "R" "D" PHASE 2 Master

10 X X Waiting next data Lire 4 mots à partir de l'adresse "R" "P" irrelevant Data RWM 1RWM 2RWM 3 RWM 4 Slave DATA 2 (beginning) DATA DATA 2 (continuation) DATA 3DATA 4 Protection 1 Protection 2 1 Releasing of data PHASE 2 Master Power supply Fieldbus

11 Power supply Fieldbus X X Data are read Lire 4 mots à partir de l'adresse "R" "P" irrelevant RWM 1RWM 2RWM 3 RWM 4 Slave DATA 2 (continuation) DATA 3DATA 4 Protection 2 1 Waiting an instruction Protection 1 PHASE 2 Master

12 Power supply Fieldbus X X Waiting next data Lire 4 mots à partir de l'adresse "R" "P" irrelevant Data RWM 1RWM 2RWM 3 RWM 4 Slave DATA 2 (suite) DATA 3DATA 4 Protection 4 1 Releasing of data Protection 3 Protection 1 Protection 4 irrelevant PHASE 2 Master

13 Power supply Fieldbus X X Data are read Lire 4 mots à partir de l'adresse "R" "P" irrelevant RWM 1RWM 2RWM 3 RWM 4 Slave DATA 4 Protection 4 1 Protection 3 Protection 1 Protection 4 irrelevant 1 All data have been sentWaiting an instruction PHASE 2 Master

14 Power supply Fieldbus X X Command completed Lire 4 mots à partir de l'adresse "R" "P" irrelevant RWM 1RWM 2RWM 3 RWM 4 Slave DATA 4 Protection 4 Protection 3 Protection 1 Protection 4 irrelevant 1 End of transaction 0 0 PHASE 2 Master

15 ©Contrinex JDC PPT_LF_Fieldbus Fieldbus J.-D. Chatelain End of this chapter


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