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101
Reference Manual
00809-0100-4697, Rev GA
Appendix D: Function Blocks
November 2014
Function Blocks
Figure D-2. Analog Input Function Block Schematic
Filtering
The filtering feature changes the response time of the device to smooth variations in output
readings caused by rapid changes in input. Adjust the filter time constant (in seconds) using the
PV_FTIME parameter. Set the filter time constant to zero to disable the filter feature.
Signal conversion
Set the signal conversion type with the Linearization Type (L_TYPE) parameter. View the
converted signal (in percent of XD_SCALE) through the FIELD_VAL parameter.
Choose from direct, indirect, or indirect square root signal conversion with the L_TYPE
parameter.
Direct
Direct signal conversion allows the signal to pass through the accessed channel input value (or the
simulated value when simulation is enabled).
Indirect
Indirect signal conversion converts the signal linearly to the accessed channel input value (or the
simulated value when simulation is enabled) from its specified range (XD_SCALE) to the range
and units of the PV and OUT parameters (OUT_SCALE).
OUT = Block output value and status
OUT_D = Discrete output that signals a selected alarm condition
Analog
Measurement
Access
Analog
Meas.
CHANNEL
SIMULATE
OUT_SCALE
XD_SCALE
FIELD_VAL
L_TYPE
IO_OPTS
PV_FTIME
MODE
STATUS_OPTS
HI_HI_LIM
HI_LIM
LO_LO_LIM
LO_LIM
ALARM_HYS
ALM_SEL
OUT_D
OUT
PV
Convert
Cutoff Filter
Status
Calc.
Alarm
Detection
LOW_CUT
F
FIELD_VAL
100 Channel Value EU*@0%–()¥
EU*@100% EU*@0%–()
------------ ------------ ------------- ----------- ------------ ------------- ------------- ---=
* XD_SCALE values
PV Channel Value=
PV
FIELD_VAL
100
----------------------------
EU**@100% EU**@0%–()EU**@0%+¥=
** OUT_SCALE values
- 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
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