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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These fields are not configurable using a configuration too and none are modifiable at run-time. Alarm Fields lists other fields related to alarms that are common to all record types.
Natural log unary EXP: Although only one traditional calculation expression is allowed, multiple assignment expressions are allowed. These values retrieved from the input links are stored in the A-L fields. No Literals Standard double referencr floating point numbers Inf: The following alarm parameters which are configured by the user define the limit alarms for the VAL field and the severity corresponding manuak those conditions.
A routine postfix is refernece to convert the infix expression in CALC to reverse polish notation. Minimum any number of args MAX: Spaces may be used anywhere within an expression except between the characters that make up a single expression element.
This page Page Discussion History. If they are constants, they will be initialized with the value they are configured with and can be changed via dbPuts. These fields are listed in Scan Fields. Nested parenthesis are supported. Teference Calculation alarm is called by the record processing routine recotd the CALC expression is an invalid one, upon which an error message is generated.
The HYST field defines an alarm deadband for each limit. Sets the upper control and the lower control limits for a field. In addition, Scanning Specification explains how these fields are used.
RRM 3-14 Calculation
See Monitor Specification for a complete explanation of monitors. These fields are used to referenxe VAL and the other parameters of the calculation record either textually or graphically. These parameters are used to present meaningful data to the operator. Sets the upper display and lower display limits for a field. It is this expression which is actually used to calculate VAL. The fields can be database links, channel access links, or constants.
See Address Specification for information on how to specify database links. The monitors are sent when epocs value field exceeds the last monitored field by the appropriate deadband, the ADEL for archiver monitors and the MDEL field for all other types of monitors. 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 values to be used in the expression are simply referenced by the field letter.
Retrieved from ” https: 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. Right shift Assignment Operator: These parameters are used to determine when to send monitors for the value fields.
RRM Calculation – EPICSWIKI
The LA-LL fields are used to decide when to trigger monitors for the corresponding fields. The Calc record has the standard fields for specifying under what circumstances the record will be processed.
Natural log unary LN: The comma is supported when used to separate the arguments of a binary function. This page was last edited on 22 Marchat 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 LALM field is used to implement the hysteresis factor for the alarm limits.
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