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FactoryTalk Historian DataLink User Guide
124
Calculation Functions
Calculation functions compute new values from FactoryTalk Historian
point values corresponding to a specific time range.
PICalcVal()
Retrieves a calculated FactoryTalk Historian point value using the
following syntax:
PICalcVal(tagname, stime, etime, mode, cfactor, outcode,
PIServer)
PICalcVal() is generated only by the Calculated Data dialog box in
XP-2003
versions.
2007
versions use PIAdvCalcVal().
Arguments
Argument
Explanation
tagname (string)
The tag name or names matching the desired FactoryTalk Historian
points for calculation.
stime (string)
The start time for the range of calculation (in FactoryTalk Historian
time format).
etime (string)
The end time (in FactoryTalk Historian time format).
mode (string)
The type of calculation to be used to compute point values.
cfactor (number)
The time unit of flow for the source tag, required for Total
calculations.
outcode (integer)
An output code, 0-7, and not 3.
PIServer (string)
The target FactoryTalk Historian server.
Returns
The output code (page 104) argument affects the output as follows:
If the outcode is 0, only the calculated value is returned.
- DATALINK USER GUIDE 1
- Copyright 2
- Contents 3
- Chapter 1 9
- Introduction 9
- About this Document 10
- Support 11
- System Requirements 12
- Installation and Upgrade 12
- Upgrade 13
- Configuration 13
- Microsoft Excel 2010 14
- Chapter 2 15
- PI Ribbon 16
- Function Task Panes 17
- PI Menu 19
- Function Dialog Boxes 21
- Context Menu 22
- 2 ● Basics 23
- Graphic Function Components 25
- Standard Arguments 26
- Tagname(s) or Expression 27
- Start Time 27
- End Time 28
- PI Server 28
- Output Cell 28
- Time Arguments 29
- Appended Data 30
- Appended Data Array 31
- Show Timestamps 32
- Interval Timestamps 32
- Show Percent Good 33
- Show Value Attributes 33
- Orientation Controls 34
- Display Formats 35
- Preference Settings 37
- Spreadsheet Construction 39
- Chapter 3 41
- Functions 41
- Archive Value 42
- Compressed Data 44
- Filtered 45
- Sampled Data 47
- Timed Data 49
- Calculated Data 51
- Average 52
- Interpolated 53
- Time Filtered 56
- Chapter 4 59
- Attributes 59
- Tag Search Tips 61
- Attribute Mask to Tag 63
- Tag Attributes 64
- Chapter 5 65
- Module Database Objects 65
- Module Database Browse 66
- 5 ● Module Database Objects 67
- Alias to Tag 69
- Property to Value 69
- Property 70
- Module Path 70
- Query Date 70
- Chapter 6 71
- Spreadsheets 71
- Triggered Recalculation 72
- Manual Recalculation 73
- Functions and Array Values 74
- Array Management 75
- Update Arguments 76
- Resize Arrays 77
- Share Spreadsheets 78
- 6 ● Spreadsheets 79
- Chapter 7 81
- Trend Displays 81
- Create a Trend 82
- Worksheet Data 83
- FactoryTalk Historian Data 84
- Manage Traces 85
- Specify the Time Range 86
- Title and Placement 87
- 7 ● Trend Displays 89
- Chapter 8 91
- Supplementary Information 91
- Firewall Database 92
- FactoryTalk Historian Trusts 93
- Point Access Permissions 93
- FactoryTalk Historian Time 94
- Time Syntax Examples 96
- Time Interval Examples 97
- Operators 99
- Math Functions 102
- Aggregate Functions 103
- Miscellaneous Functions 103
- Point Attributes 105
- Time Functions 106
- String Conversion 108
- Manual Function Entry 109
- Use Array Functions 110
- Mathematical Functions 110
- String Arguments 111
- Cell References 111
- PIServer Argument 111
- Outcodes 112
- Example: 113
- Troubleshooting 114
- Array and Cell Limits 115
- Row Limitations 115
- Security 116
- , shipped with the 117
- Chapter 9 119
- Function Reference 119
- PIArcVal() 120
- PIExpVal() 121
- Multiple Value Functions 122
- PINCompFilDat() 123
- PICompDat() 124
- PICompFilDat() 125
- PISampDat() 126
- PISampFilDat() 127
- Arguments 128
- Returns 128
- PIExpDat() 129
- PITimeDat() 130
- PITimeExpDat() 131
- Calculation Functions 132
- PIAdvCalcVal() 134
- PIAdvCalcFilVal() 135
- PIAdvCalcExpVal() 137
- PIAdvCalcExpFilVal() 138
- PICalcDat() 140
- PIAdvCalcDat() 141
- PIAdvCalcFilDat() 142
- PIAdvCalcExpDat() 144
- PIAdvCalcExpFilDat() 145
- PITimeFilter() 147
- PITimeFilterVal() 148
- Tag Functions 149
- PIAttributeMaskToTag () 150
- PITagAtt() 151
- Module Database Functions 152
- PIPropertyToValue() 153
- Input Functions 154
- Chapter 10 157
- Worldwide Support 158
- Training Programs 158
- Consulting Services 158
- TechConnect Support 158
- Worksheet Data • 75 164
- Worldwide Support • 150 164
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