EPICS 3.14 RECORD REFERENCE MANUAL PDF

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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Minimum any number of args MAX: Although only one traditional calculation expression is allowed, multiple assignment expressions are allowed.

Log base 10 unary LOGE: Alarm Fields lists other fields related to alarms that are common to all record types. CALC can be changed at run-time, and a special record routine calls a function to convert it to Reverse Polish Notation. Nested parenthesis are supported.

Also, the RNDM nullary function can be included as an operand in the expression in order to generate a random number between 0 and 1. mahual

RRM Calculation – EPICSWIKI

This page was last edited on 22 March reccord, at The result is stored in RPCL. Absolute value unary SQR: They are used to process the record. The HYST field defines an alarm deadband for each limit. The comma is supported when used to separate the arguments of a binary function. This page Page Discussion History. Sets the upper control and the lower control limits for a field. No Run-time Parameters These fields are not configurable using a configuration too and none are maual at run-time.

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The following alarm parameters which are configured by the user define the limit alarms for the VAL field and the severity corresponding to those conditions. Retrieved from ” https: Conditional Expression The C language’s question mark operator is supported.

The Calculation alarm is called by the record 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. Square root referencce MIN: These fields are listed in Scan Fields. The result of its operations can then be accessed by another record so that it can be used. Natural log unary LN: 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.

RRM 3-14 Calculation

A routine postfix is called to convert the infix expression in CALC to reverse polish notation. If they are links, they must specify another record’s field or a channel access link.

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. These parameters are used to determine when to send monitors for the value fields. The Reverse Polish expression is evaluated more efficiently during run-time than an infix expression.

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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.

The monitors are sent when the 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. 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.

They cannot be hardware addresses. In addition, Scanning Specification explains how these fields are used.

The LALM field is used to implement the hysteresis factor for reefrence alarm limits. Natural log unary EXP: All alphabetic elements described below are case independent, so upper and lower case letters may be used and mixed in the variable and function names as desired. No Monitor Parameters These parameters are used to determine when to send monitors for the value fields.

The fields can be database links, channel access links, or constants. These fields are used to display VAL and the other parameters of the calculation rsference either textually or graphically.

The expression uses the values retrieved from the INP x links as operands, though constants can be used as operands too.