[acg] how to get list of epics signal values

[Kyle Hesse]

Another option from Bevins:

Using caget and the request type:

caget -d CTRL_ENUM PLC_HLA_A

PLC_HLA_A
    Native data type: DBF_ENUM
    Request type:     DBR_CTRL_ENUM
    Element count:    1
    Value:            Lockdown
    Status:           NO_ALARM
    Severity:         NO_ALARM
    Enums:            (12)
                      [ 0] Unknown
                      [ 1] Restricted
                      [ 2] Sweep Progress
                      [ 3] Sweep Complete
                      [ 4] Controlled
                      [ 5] Power Permit
                      [ 6] Beam Permit 1
                      [ 7] Beam Permit 2
                      [ 8] Laser Permit
                      [ 9] Lockdown
                      [10] Inj Restricted Maint
                      [11] Inj Controlled Maint

________________________________
From: acg <acg-bounces at jlab.org> on behalf of Kyle Hesse via acg <acg at jlab.org>
Sent: Tuesday, January 14, 2025 11:32 PM
To: acg at jlab.org <acg at jlab.org>; Theo McGuckin <tsm at jlab.org>
Subject: Re: [acg] how to get list of epics signal values

Checking my email before bed...

Here's a few options:

Make sure your EPICS_CA_ADDR_LIST is properly set for the channels you want to view.

Python cainfo:

python3 -c "import epics; epics.cainfo('PLC_HLA_A')"

Channel Access Print Record:

/usr/dvlepics/epics/R7.0.7.0.J0/bin/rhel-9-x86_64/capr.pl -l 10 PLC_HLA_A

This could be parsed for the value and string fields:

Values -> ZRVL ONVL TWVL THVL FRVL FVVL SXVL SVVL EIVL NIVL TEVL ELVL TVVL TTVL FTVL FFVL
Strings -> ZRST ONST TWST THST FRST FVST SXST SVST EIST NIST TEST ELST TVST TTST FTST FFST

Probe:

GUI for channel lookup and info

probe PLC_HLA_A

[cid:773c556f-92d6-4837-9bec-d0ec2f030184]

Click Info

[cid:79e51c78-4581-450d-8980-f0249e82b419]

________________________________
From: acg <acg-bounces at jlab.org> on behalf of Theo McGuckin via acg <acg at jlab.org>
Sent: Tuesday, January 14, 2025 9:26 PM
To: acg at jlab.org <acg at jlab.org>
Subject: [acg] how to get list of epics signal values

I think there's a command to get list of values for an epics signal (when there is a fixed list, and not just a float or int)?

For example, PLC_HLA_A can "Restricted" or "Controlled" or "Sweep"... is there a command to list all allowed values?
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