Re: aai to multiple states

["Dr. Simon Friederich via Tech-talk" <tech-talk at aps.anl.gov>]

Hi Ziga,

Thanks for your reply. I thought about mbbiDirect too, but I don't see how to set individual labels? I can only find the B0-BF and B10-B1F fields.

https://epics-base.github.io/epics-base/mbbiDirectRecord.html

Can you show me an example how to do that?

Best regards
Simon

Am 03.06.2025 um 11:42 schrieb Žiga Oven:

Hi Simon,

 

If you substitute your mbbi record for mbbiDirect [1] you can access individual bits by fields B1, B2, …
The 9 bi records give you a way to individually label and alarm states for each individual Boolean value.

Regarding the processing of your calc_output record: is the value in info_get record changing?
You can also set your aai record (info_get) to post monitor every time it processes by configuring the MPST field [2] to Always (this should be  a default setting, but you should verify or set it specifically if needed).

 

Best regards,

 

Žiga Oven


[1] https://docs.epics-controls.org/projects/base/en/latest/mbbiDirectRecord.html

[2] https://docs.epics-controls.org/projects/base/en/latest/aaiRecord.html#monitor-parameters

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Dr. Simon Friederich via Tech-talk
Sent: Monday, June 2, 2025 16:21
To: tech-talk at aps.anl.gov
Subject: aai to multiple states

 

Dear EPICS community,

I have an aai record "info_get" that contains multiple values.

 

#=============== Information array ===============

 

record(aai,

"$(P)$(R)slot$(SLOT):info_get") {

 

    field(DESC,

"Retrieve slot status")

 

    field(DTYP,

"stream")

 

    field(INP,

"@infus.proto getSingleSlotconf($(SLOT))

$(PORT)")

 

    field(NELM,

"26")

 

    field(FTVL,

"DOUBLE")

 

    field(PREC, 1)

 

}

 

9 values of these are booleans representing different outputs that are on or off (0 or 1).

I could create now, e.g. 9 binary inputs to map these values.

 

record(bi,

"$(P)$(R)slot$(SLOT):output_preAB_get")

{

 

    field(INP,  "$(P)$(R)slot$(SLOT):info_get.VAL[4]

CP")

 

    field(ZNAM,

"OPEN")

 

    field(ONAM,

"CLOSED")

 

}

 

record(bi,

"$(P)$(R)slot$(SLOT):output_preCD_get")

{

 

    field(INP,  "$(P)$(R)slot$(SLOT):info_get.VAL[5]

CP")

 

    field(ZNAM,

"OPEN")

 

    field(ONAM,

"CLOSED")

 

}

 

...# and so on

 

Yet, I wanted to ask, if there is another way of mapping this subarray to one record containing the states.
I thought the mbbi would suite, but unfortunately, it does not work as expected:

 

record(calc,

"$(P)$(R)slot$(SLOT):_calc_output")

{

 

    field(DESC,

"OUTPUT module: aai to byte")

 

    field(CALC,

"(A<<8) | (B<<7) | (C<<6) | (D<<5) | (E<<4) | (F<<3) | (G<<2) | (H<<1) | I")

 

    field(INPA,

"$(P)$(R)slot$(SLOT):info_get.VAL[4] CP")

 

    field(INPB,

"$(P)$(R)slot$(SLOT):info_get.VAL[5]")

 

    field(INPC,

"$(P)$(R)slot$(SLOT):info_get.VAL[6]")

 

    field(INPD,

"$(P)$(R)slot$(SLOT):info_get.VAL[7]")

 

    field(INPE,

"$(P)$(R)slot$(SLOT):info_get.VAL[8]")

 

    field(INPF,

"$(P)$(R)slot$(SLOT):info_get.VAL[9]")

 

    field(INPG,

"$(P)$(R)slot$(SLOT):info_get.VAL[10]")

 

    field(INPH,

"$(P)$(R)slot$(SLOT):info_get.VAL[11]")

 

    field(INPI,

"$(P)$(R)slot$(SLOT):info_get.VAL[12]")

 

}

 

record(mbbi,

"$(P)$(R)slot$(SLOT):output_get") {

 

    field(DESC,

"OUTPUT module: Outputs")

 

    field(DTYP,

"Raw Soft Channel")

 

    field(INP,  "$(P)$(R)slot$(SLOT):_calc_output

CP")

 

    field(ZRST,

"Ausgang Vorstufe A,B")

 

    field(ONST,

"Ausgang Vorstufe C,D")

 

    field(TWST,

"Ausgang Vorstufe E,F")

 

    field(THST,

"Ausgang A")

 

    field(FRST,

"Ausgang B")

 

    field(FVST,

"Ausgang C")

 

    field(SXST,

"Ausgang D")

 

    field(SVST,

"Ausgang E")

 

    field(EIST,

"Ausgang F")

 

}

 

(By the way:
The CP flag at INPA does not seem to be sufficient to process my calc record. At least for my tests I needed to caput .._calc_output.PROC 1 to process it).

Thank you very much in advance!

Best regards
Simon