EPICS 3.14 RECORD REFERENCE MANUAL PDF

EPICS Record Reference Manual. Philip Stanley, Janet Anderson, Marty Kraimer. Wikified by Andrew Johnson. Copyright · Preface. EPICS Input Output Controller (IOC) Record Reference Manual. Janet B. Anderson and. Martin R. Kraimer. Advanced Photon Source. Issue 1: December 1. EPICS R Channel Access Reference Manual .. link -nologo /LTCG / incremental:no /opt:ref /release /version -out: acctst. obj .. by the EPICS record support (see the EPICS Application Developer Guide ).

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Natural log unary LN: The resulting value is placed in the VAL field and can be accessed from there. Alarm Fields lists other fields related to alarms that are common to all referrence types. The Calc record has the standard fields for specifying under what circumstances the record will be processed.

The Calculation alarm is called by the janual processing routine when the CALC expression is an invalid one, upon which an error message is generated. Browse Main page Recent changes Random page Help.

This page was last edited on 22 Marchat This page Page Discussion History.

Natural log unary EXP: The keyword VAL returns the current contents of the VAL field which can be written to by a CA put, so it might not be the result from last time the expression was evaluated. Square root unary MIN: Sets the upper display and lower display limits for a field. These fields rscord used to display VAL and the other parameters of the calculation record either textually or graphically. Right shift Assignment Operator: See Alarm Specification for a complete explanation of alarms and these fields.

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Spaces may be used anywhere within an expression except between the characters that make up a single expression element. A routine postfix is called to convert the infix expression in CALC to reverse polish notation.

The EGU field contains a string of up to 16 characters which is supplied by the user and which describes the values being operated upon. referenfe

epicss Yes The keyword VAL returns the current contents of the VAL field which can be written to by a CA put, so it might not be the result from last time the expression was evaluated. Nested parenthesis are supported. Sets the upper control and the lower control limits for a field. If these fields have a value of zero, everytime the value changes, monitors are triggered; if they have a value of -1, everytime the record is scanned, monitors are triggered. The expression uses the values retrieved from the INP x links as operands, though constants can be used as operands manuap.

If they are links, they must specify another record’s field or a channel access link. Not a Number Constants PI: The range of expressions supported by the calculation record are separated into literals, constants, operands, algebraic operators, trigonometric operators, relational operators, logical operators, the assignment operator, parentheses and commas, and the question mark or ‘?: The calculation or “Calc” record is used to perform algebraic, relational, and logical operations on values retrieved from other records.

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RRM 3-14 Calculation

The semicolon is used to separate expressions. The comma is supported when used to separate the arguments of a binary function.

The infix expressions that can be used are very similar to the C expression syntax, but with some additions and subtle differences in operator meaning and precedence. No Run-time Parameters These fields are not configurable using a configuration too and none are modifiable at run-time. These fields are not configurable using a configuration too and none are modifiable at run-time. These fields are listed in Scan Fields.

RRM Calculation – EPICSWIKI

For instance, if LA does not equal the value for A, monitors for A are triggered. These parameters are used to determine when to send monitors for the value fields. The values to be used in the expression are simply referenced by the field letter. No Literals Standard double precision floating point numbers Inf: No Monitor Parameters These parameters are used to determine when to send monitors for the value fields.

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