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Subject: Re: Question about alias name
From: Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov>
To: "lzfneu at live.com" <lzfneu at live.com>
Cc: "tech-talk at aps.anl.gov" <Tech-talk at aps.anl.gov>
Date: Fri, 16 Sep 2022 11:35:29 -0700
On 9/15/22 20:00, lzfneu--- via Tech-talk wrote:
Dear all,

I try to use alias name for my existed pv names, part of the record are as follows:

record (calc, "test")
{
     alias("test:alias_name")
     field(INPA,"test_pv.VAL")
     field(ADEL, "-1")
     field(CALC, "A*10")
     field(EGU, "m")
     field(FLNK, "test2")
}

record(calc, "test2")
{......
      ......
}

When I run the IOC, I received the following errors:
ErrorCan't create alias "test:alias_name" for "test" Error at or before ")" in file "db/ai.template" line XX.
And XX is the alias filed line number.

Although showed the error messages, the alias PV name "test:alias_name" can normally receive the same data as PV name "test". I have no idea how to correct the error messages.

Any help will be appreciated and thanks in advance.

What version of EPICS Base are you using?

I'm not able to replicate with 7.0.7

$ cat alias.db record (calc, "test")
{
        alias("test:alias_name")
        field(INPA,"test_pv.VAL")
        field(ADEL, "-1")
        field(CALC, "A*10")
        field(EGU, "m")
        field(FLNK, "test2")
}> $ softIoc -d alias.db Starting iocInit
############################################################################
## EPICS R7.0.6.2-DEV
## Rev. R7.0.6.1-260-ga0a937d0b6ce07c20358
## Rev. Date Git: 2022-09-03 11:36:57 -0700
############################################################################
Forward-link uses Channel Access without pointing to PROC field
    test.FLNK => test2
iocRun: All initialization complete
epics>

Replies:
Re: Question about alias name neu lzf via Tech-talk
References:
Question about alias name lzfneu--- via Tech-talk

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