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Chapter 4 Block Reference
FieldPoint FP-3000 User Manual 4-14 www.ni.com
User Functions
User functions are not supported. You cannot define sub-routines within an
expression block.
Purpose Scales the floating point value,
valueToScale
,toa
percentage in the scale range specified by
engUnit0
and
engUnit100
.
Return value The scaled floating point value status pair.
engUnit0 <= vs_float.value
returned.value <=engUnit100
Function Name
to_unity
Function Syntax
vs_float to_unity(float euValue,
float engUnit0,
float engUnit100)
Input
engUnit0
is the low value of the scale range,
engUnit100
is the high value of the scale range,
and
euValue
is the value that needs to be converted
from engineering units to an implicit 0 to 1 scale.
EngUnit0 <= euValue <= engUnit100
Purpose Un-scales the floating point value input in
euValue
parameter to a value using the scale range specified
by
engUnit0
and
engUnit100
for the conversion.
Return value The floating point value status pair, with floating
point value being between 0 and 1.
0 <= vs_float_value returned.value <= 1
Function Name
to_discrete
Function Syntax
vs_discrete to_discrete(vs_float)
Input A symbol that is a value status float
Purpose Converts a value status floating point variable to a
discrete value status variable.
Return value A discrete value status record.
- FP-3000 Network Module 1
- User Manual 1
- Important Information 3
- Conventions 4
- Chapter 3 6
- Chapter 4 7
- Appendix A 8
- Appendix B 8
- Contents 10
- Appendix C 11
- Appendix G 13
- Technical Support Resources 13
- Glossary 13
- Overview 14
- Function Blocks 15
- PID Control 16
- Interoperability 17
- Scheduling Functionality 17
- HotPnP (Hot Plug and Play) 17
- OUNDATION 18
- Import Device Descriptions 19
- MountingtheFP-3000onaDINRail 21
- Figure 2-3 23
- Connecting Terminal Bases 23
- Removing I/O Modules 26
- Connect Power to the FP-3000 28
- Supplying Power for Outputs 29
- Isolation 29
- Power Connections 30
- LED Indicators 31
- FF-H1 PORT 32
- STATUS NETWORK 32
- Table 2-1 33
- Autoconfigure the FP-3000 34
- Updating the FP-3000 Firmware 35
- Example Applications 36
- Fieldbus Using FP-3000 37
- Create an FP-AI-110 Block 38
- Assign a Tag to the New Block 38
- Select the Module and Channel 38
- Set the Input Range 39
- Scale the Reading 39
- Set Up Scheduling 40
- Bring the Block Online 41
- Getting Started 42
- Taking Temperature Readings 43
- Create an FP-TC-120 Block 43
- Controlling a Heating Element 46
- Create an FP-AO-200 Block 46
- Set the Output Range 46
- Scale the Output 47
- Create a PID Block 48
- Scale the PID 49
- Tune the PID 51
- Set Alarms 52
- Block Reference 53
- Transducer Blocks 54
- Types of Function Blocks 55
- DO (Discrete Output) 56
- CDO (Complex Discrete Output) 56
- Data Types Supported 57
- Status Calculation Rules 58
- Syntax Rules 58
- Program Constructs 59
- Constants 60
- Operators 61
- Flow Control 62
- Delimiters 62
- Functions 62
- Table 4-5. Function Operators 63
- Uint32 is_bad(vs_float F) OR 63
- Uint32 is_bad(vs_discrete D) 63
- Chapter 4 Block Reference 64
- Table 4-6 67
- FieldPoint Modules 67
- PID Loop Execution Time 69
- Alarming 70
- Alarm Parameters 71
- UNACKNOWLEDGED 71
- ALARM_STATE/UPDATE_STATE 71
- TIME_STAMP 72
- Status Handling 73
- Substatus 74
- TARGET Mode 74
- ACTUAL Mode 75
- PERMITTED Mode 75
- NORMAL Mode 75
- Configuring the FP-3000 77
- Write Lock 78
- Fieldbus Parameters 79
- Table B-1 81
- Error Codes 81
- BYPASS (Scaling, Tuning) 82
- CAS_IN (Process) 82
- CAS_IN_D (Process) 82
- CHANNEL (I/O, Process) 82
- CONFIRM_TIME (Alarming) 83
- SET_FSTATE 85
- CLR_FSTATE 85
- FEATURES 85
- FEATURE_SEL 85
- FF_GAIN (Scaling, Tuning) 86
- FF_SCALE (Scaling) 86
- HI_PRI (Alarming) 89
- IN (Process, Scaling, Tuning) 89
- L_TYPE (Scaling) 90
- MAX_NOTIFY (Alarming) 92
- MEMORY_SIZE (Diagnostic) 92
- NV_CYCLE_T (Diagnostic) 93
- UNIT_INDEX 94
- OUT_SCALE 95
- SHED_RCAS 95
- ROUT_OUT (Process) 97
- SEL_TYPE (Scaling) 97
- SHED_RCAS (Mode Shedding) 98
- SHED_ROUT (Mode Shedding) 98
- SIMULATE (Option) 98
- WRITE_PRI (Alarming, Option) 102
- XD_SCALE (Scaling) 102
- XD_STATE (Process) 102
- FP-3000 Specific Parameters 103
- CFG_OPTS 104
- CHECKBACK 104
- BLOCK_ALMS_ACT 104
- BLOCK_RESET 104
- CLEAR_LOG 105
- D_IN_0–D_IN_3 105
- D_OUT_0–D_OUT_7 105
- Module in Configuration 109
- Module Okay 109
- Incorrect Module for Block 109
- HI_OUT_D 110
- INIT_STATUS 110
- LAST_BLOCK_EVENT 110
- LAST_RUN_ERROR 111
- LO_LO_OUT_D 111
- LO_OUT_D 111
- LTYPE_DOMAIN_INDEX 111
- NVM_LIFE 111
- VERSION_INFORMATION 113
- Advanced Function 114
- Block Behavior 114
- Upstream 115
- Downstream 115
- Remote Cascades 116
- Fault State and Mode Shedding 117
- Specifications 118
- Troubleshooting 119
- Appendix F Troubleshooting 120
- I/O Module Problems 121
- Common Questions 125
- TRK_IN_D.VALUE 126
- TRK_VAL.VALUE 126
- EXECUTION_TIME 126
- Hexadecimal 126
- Worldwide Support 132
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