Rosemount 848T Spécifications Page 105
- Page / 136
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
95
Reference Manual
00809-0100-4697, Rev GA
Appendix C: FOUNDATION Fieldbus Technology
November 2014
FOUNDATION Fieldbus Technology
Figure C-4. Scheduled Data Transfer
C.5.4 Unscheduled transfers
Figure C-5 diagrams an unscheduled transfer. Unscheduled transfers are used for things like
user-initiated changes, including set point changes, mode changes, tuning changes, and
upload/download. Unscheduled transfers use either report distribution or client/server type of
reporting for transferring data.
All of the devices on the F
OUNDATION fieldbus are given a chance to send unscheduled messages
between transmissions of scheduled data. The LAS grants permission to a device to use the
fieldbus by issuing a pass token (PT) message to the device. When the device receives the PT, it is
allowed to send messages until it has finished or until the “maximum token hold time” has
expired, whichever is the shorter time. The message may be sent to a single destination or to
multiple destinations.
Figure C-5. Unscheduled Data Transfer
LAS = Link Active Scheduler
P = Publisher
S = Subscriber
CD = Compel Data
DT = Data Transfer Packet
P = Publisher S = Subscriber PT = Pass Token M = Message
Schedule
X, Y, Z
CD(X,A)
DT(A)
Device X
Device Y Device Z
ACDAB
PS PS P
A
S
LAS
Schedule
X, Y, Z
PT(Z)
Device X Device Y Device Z
ACDAB
PS PS P
A
S
LAS
DT(M)
MM
- Transmitter with FOUNDATION 1
- fieldbus 1
- Transmitter with F 3
- Title Page 4
- 1Section 1: Introduction 5
- 2Section 2: Installation 5
- 3Section 3: Configuration 5
- AAppendix A: Reference Data 6
- DAppendix D: Function Blocks 8
- Section 1 Introduction 9
- 00809-0100-4697, Rev GA 10
- November 2014 10
- OUNDATION fieldbus Technology 10
- 1.3 Service support 11
- Section 1: Introduction 12
- Introduction 12
- Section 2 Installation 13
- 2-in. screws 14
- 2.3 Wiring 16
- RTD or ohm inputs 17
- Analog inputs 17
- 2.4 Grounding 19
- Shielded wire 20
- Grounded thermocouple inputs 21
- Analog device inputs 21
- 2.5 Switches 22
- 2.6 Tagging 22
- Transmitter tag 23
- Sensor tag 23
- 2.7 Installation 24
- 2.7.2 Using conduit entries 25
- Section 2: Installation 26
- Section 3 Configuration 27
- 3.2 Configuration 28
- 3.2.5 Alarms 29
- 3.2.6 Damping 29
- Typical profiling application 31
- OUNDATION fieldbus 33
- Section 3: Configuration 34
- Number Parameter Description 34
- OUNDATION 35
- How to use PlantWeb Alarm 39
- 3.4.3 PlantWeb alerts 40
- MAINT_ALARMS 41
- Advisory alarms 42
- RECOMMENDED_ACTION 43
- FD failed alarms 44
- Configuration 45
- FD CHECK ALARMS 47
- 3.4.7 Transducer blocks 49
- Transducer block errors 50
- Transducer block modes 50
- Automatic (Auto) 51
- Out of Service (OOS) 51
- 4.4.2 Resource block 64
- Appendix A Reference Data 65
- OUNDATION fieldbus parameters 66
- A.3 Function blocks 67
- A.4.1 Stability 68
- A.4.2 Self calibration 68
- A.4.3 Vibration effect 68
- A.4.5 Accuracy 68
- A.4.8 Analog sensors 4–20mA 69
- Reference Data 70
- Examples 71
- A.5 Dimensional drawings 72
- A.5.1 Mounting options 74
- A.6 Ordering information 75
- Approvals 77
- B.3.2 Canada 78
- B.4 Europe 79
- B.5 International 81
- B.5.1 Brazil 83
- B.5.2 China 84
- B.5.3 Japan 86
- B.6 Combinations 87
- B.8 Additional Certifications 88
- B.10 Installation drawings 90
- Product Certificates 91
- Appendix C FOUNDATION 99
- Technology 99
- C.3 Device descriptions 100
- C.4 Block operation 101
- C.5 Network communication 101
- C.5.1 LAS 102
- C.5.2 Addressing 103
- C.5.3 Scheduled transfers 104
- C.5.4 Unscheduled transfers 105
- OUNDATION Fieldbus Technology 106
- Appendix D Function Blocks 107
- Reference Manual 108
- Appendix D: Function Blocks 108
- Table 3-5 on page 11 108
- D.1.1 Functionality 110
- Filtering 111
- Signal conversion 111
- Indirect 111
- Indirect square root 112
- Block errors 112
- Alarm detection 113
- Status handling 114
- Advanced features 114
- Application information 114
- D.2.1 Functionality 118
- D.3.1 Functionality 125
- Block execution 127
- AVG_USE = 6 129
- Numerics 131
Produits connexes et manuels pour Mesure, test et contrôle Rosemount 848T
(36 pages)© 2020, manymanuals.fr. Tous droits réservés | 0.048 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Commentaires sur ces manuels