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Note: as of Sep 21, 2006 the Magnet Controls EPICS PV Attributes list is still under development. So check for updates.

Description CHCKTOL | TOLS(3) | Absolute | Relative

EPICS PV Attributes

Table 1.3

EPICS PV Attribute SLC

 SLC Secondary Description

BEFF | |

 Effective B-field value (for mains w/trim=main+trim B-field)

BDES | BDES |

BDES Desired B-field. IDES calculated from BDES but current is not set until TRIM or PERTURB is selected.

BCTRL

N/A valueBCTRL | | Set B field value, then perturb, updates BDES

BACT | BACT | Physical Units val converted from IACT

BMON | BMON | Physical Units val converted from IMON

BMAX | BMAX | Maximum Operating B field

BMIN | | Minimum Operating B-field

BDES.DRVL | | Minimum Operating B-field

BCDES.DRVH | | Maximum Operating B-field

TRIMBTOL | TOLS(1) | Absolute Trim Tolerance (Warning Delta)

TRIMBTOLR | TOLS(2) | Relative Trim Tolerance (Warning Fraction)

PERTURB, bypass sequence. Similar to using a knob in SLC

BACT

BACTActual B-field (calculated from the current).

BMON

BMONSecond Acutal B-field. From an EPSC 2nd Analog Signal. Not available from an MCOR

BMAX

BMAX Maximum Magnetic Strength

BMIN

BMIN Minimum Magnetic Strength

BDES.DRVL

N/AB-field maximum drive (operating) limit. Entries above this limit will be clipped

BDES.DRVH

N/A B-field minimum drive (operating) limit. Entries below this limit will be clipped

IDES

BDES Desired B-field. IDES calculated from BDES but current is not set until TRIM or PERTURB is selected.

ICTRL

 N/ASet B field value, then PERTURB, bypass sequence. Similar to using a knob in SLC

IACT

 IVAActual B-field (calculated from the current).

IMON

 IVA2Second Acutal B-field. From an EPSC 2nd Analog Signal. Not available from an MCOR

IMAX

IMMO(2) Maximum Operating B-field permitted

IMIN

 IMMO(1) Minimum Operating B-field.

IDES.DRVL

 N/AB-field maximum drive (operating) limit. Entries above this limit will be clipped

IDES.DRVH

 N/A B-field minimum drive (operating) limit. Entries below this limit will be clipped

TRIMBTOL

 TOLS(1) Absolute TRIM Tolerance (Warning delta)

TRIMBTOLR

 TOLS(2) Relative TRIM Tolerance (Warning fraction)

CHCKTOL

 TOLS(3) Absolute Check Tolerance (Alarm Delta)

CHCKTOLR | TOLS

 TOLS(4) Relative Check Tolerance (Alarm Fraction)

BDELTAS.F | TOLF | Monitor

 TOLF Monitor Fraction

CALBTOD | CTIM | Last successful calibration

 CTIM Last successful calibration time

TRIMTOD | TTIM | Last successful stardardize

 TTIM Last successful TRIM time

STDZTOD | ZIMM | Last successful trim timeCTRL | - | Magnet control

 KTIM Last successful standardize time

STDZLOSTTOD

 ZTIM Last time standardize was lost
5

CTRL

N/A Magnet Control function, see table 1.5 
Translates HSTA Hardware STDZDIRECTION | - | Downenableddisabledenabled

HSTACTRL -

 N/A Translate SLC HSTA  to individual EPICS records (no longer used)

HSTA HSTA

 HSTA Hardwrare Status bitmask

CALBDISABLE | - |

 N/A Permit calibrate control function, 1=disable, 0=enable

FBCKENABLE | - | 1=enabled, 0=disabled

OUTOFSERVICE

-

0=in service; 1=out-of-service

FBCK

 N/A Feedback enabled

OUTOFSERVICE

 N/A B-field is Out-of-Tolernace.

STDZDIRECTION

 N/A Standardize direction, 0=Up, 1=down

STDZENABLE | - |

 N/APermit Standardize control function, 1=enable, 0=disable

TRIMDISABLE | - | 1=

 N/A Permit TRIM  control function,  1-disable, 0=enable

UNAVAIL -

N/A

1=unavailable; 0=available

ONOFFCTRL -

N/A

1=on/off control; 0=no on/off control

NOANLGCTRL -

N/A

1=no analog control ps; 0=analog control ps

OPTURNEDOFF -

N/A

1=ps turned off by operator; 0=ps not turned off by operator

TRIPPED -

N/A

1=ps tripped; 0=ps not tripped

IDES

IDES

Desired Control Value (amperes)

IACT

IACT

Control Value from Hardware (Primary)

IACTPREVOK

IPRV

Last Good Readback

IACT.ADEL

ATOL(1)

Standardization Delta

IDELTAS.C

ATOL(2)

Standardization Fraction

ICTRL.DRVL

IMMO(1)

Minimum Operating Current

ICTRL.DRVH

IMMO(2)

Maximum Operating Current

IDAC

DACV

DAC Readback

IMON

IMON

Control Value from Hardware (Secondary)

IRIPL

RIPL

Ripple Current Readback

POLYCOEF.A to L

IVBU/D

Polynomial Coefficients

FBCKCTRL | - | 1=Magnet under feedback control

STAT | STAT | Status

CALBOK | - | 1=Calibration successful

STDZOK | - | 1=Standardize successful

TRIMOKOK | - | 1=Trim successful

 STAT Status bitmask 

CALBOK

 STAT bit Calibrate Status,  1=Calibrated, 0=Not Calibrated

STDZOK

 STAT bit Standardize Status, 1=Standardized,0=Not Standardize

TRIMOK

  TRIM Status,  1=TRIMmed, 0=Not TRIMmed

CTRLSTATE

MBBO

Status of Magnet Control Function

BUSY

BI

Busy State of Magnet Control Function, 1=Busy, 0=Not Busy

| Min current during standardization | Max current during standardization0 | Final current set pointSTDZRAMPRATE | - | Standardize | Last

STDZIMIN |

IMMS(1) Minmum Standardize Current 

STDZIMAX | IMMS

 IMMS(2)Maximum Standardize Current

STDZIFINAL | IMMS

 IMMS(3)Final Standardize Current

STDZRAMPRATE

 RAMP(2)Standardizaztion di/dt

STDZTOD.TIME | KTIM | Last successful

 KTODLast Successful standardization time

STDZLOSTTOD |

ZTIMLst time standardization lost
trim

TRIMTOD | TTIM | Last trim timeTRIMTRYCNT | ITRY | #

 N/ALast successfule TRIM time 

TRIMTRYCNT

ITRY Number of attempts required for a TRIM 

Machine Areas with Magnets

Table 1.4

Production

Area

EPICS IOC

SLC Aware Micro

SLC Micro

SLC DGRP

Injector

IOC-IN20-MG01

IM20

 

 

Linac Sector 21

IOC-LI21-MG01

LM21

LI21

 

Linac Sector 22

IOC-LI22-MG01

LM22

LI22

 

Linac Sector 23

IOC-LI23-MG01

LM23

LI23

 

Linac Sector 24

IOC-LI24-MG01

LM24

LI24

 

Linac Sector 25

SIOC-LI25-MG01

 

LI25

 

Linac Sector 26

SIOC-LI26-MG01

 

LI26

Linac Sector 27

SIOC-LI27-MG01

 

LI27

 

Linac Sector 28

SIOC-LI28-MG01

 

LI28

 

Linac Sector 29

SIOC-LI29-MG01

 

LI29

 

Linac Sector 30

SIOC-LI30MG01

 

LI30

 

Beam Switch Yard (B136)

IOC-BSY0-MG01

 

CA11

 

Linac-To-Undultor (B005)

IOC-LTU0-MG01

 

 

 

Linac-To-Undulator(B911)

IOC-LTU1-MG01

 

 

 

Linac-To-Undulator(B912)

IOC-LTU1-MG02

 

 

 

Undulator (B913)

IOC-UND1-MG01

 

 

 

E-DUMP &Undulator (B921)

IOC-DMP1-MG01

 

 

 

Development

Test 1

XL01

XX01

 

 

Test 2

IOC-B15-MG01

XX02

 

 

Test 3

LCLSDEV-17

XX03

 

 

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