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Reference Manual
00809-0100-4697, Rev GA
Appendix D: Function Blocks
November 2014
Function Blocks
Figure D-7. Input Selector Function Block Application Example (SEL_TYPE = average)
AVG_USE = 6
D.3.2 ISEL block troubleshooting
To determine OUT for a 6-input reading, read all eight, sort in numerical order, drop
the highest and lowest values, and calculate the average.
Symptom Possible causes Corrective action
Mode will not leave
OOS
Target mode not set Set target mode to something other than OOS.
Configuration error BLOCK_ERR will show the configuration error bit set. SELECT_TYPE must be
set to a valid value and cannot be left at 0.
Resource block The actual mode of the Resource block is OOS. See Resource Block
Diagnostics for corrective action.
Schedule Block is not scheduled and therefore cannot execute to go to Target Mode.
Typically, BLOCK_ERR will show “Power-Up” for all blocks that are not
scheduled. Schedule the block to execute.
Status of output is
BAD
Inputs All inputs have Bad status
OP selected OP_SELECT is not set to 0 (or it is linked to an input that is not 0), and it points
to an input that is Bad.
Min good The number of Good inputs is less than MIN_GOOD.
Block is in OOS
mode
Change mode to Auto
Block alarms will
not work.
Features FEATURES_SEL in the resource block does not have Alerts enabled. Enable
the Alerts bit.
Notification LIM_NOTIFY in the resource block is not high enough. Set equal to
MAX_NOTIFY.
Status Options STATUS_OPTS has Propagate Fault Forward bit set. This should be cleared to
cause an alarm to occur.
Cannot set
HI_LIMIT,
HI_HI_LIMIT,
LO_LIMIT,
LO_LO_LIMIT
Scaling Limit values are outside the OUT_SCALE.EU0 and OUT_SCALE.EU100 values.
Change OUT_SCALE or set values within range.
IN1 = 126 °F
IN2 = 118 °F
IN3 = 104 °F
IN4 = 107 °F
OUT = 118 °F
To Another
Function Block
SEL_TYPE = avg
Input Selector
(ISEL) Function
Block
IN5 = 112 °F
IN6 = 115 °F
IN7 = 130 °F
IN8 = 140 °F
AVG_USE = 6
107 112 115 118 126 130+++++
6
------------- ------------- ------------ ----------- ------------- ------------ ------------- --------118°F=
- 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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