RE: parametric PV save/restore

["Mooney, Tim M." <mooney@aps.anl.gov>]

I did a small-scale version of this in Python, to copy motor settings from one motor record to another:

import epics
def copyMotorSettings(fromMotor="xxx:m1", toMotor="xxx:m2"):
	motorFields = [".MRES", ".ERES", ".RRES", ".SREV", ".DIR", ".DHLM", ".DLLM", ".TWV",  
	".VBAS", ".VELO", ".ACCL", ".BDST", ".BVEL", ".BACC", ".RDBD", ".DESC",
	".EGU", ".RTRY", ".UEIP", ".URIP", ".DLY", ".RDBL", ".PREC", ".DISA",
	".DISP", ".FOFF", ".OFF", ".FRAC", ".OMSL", ".JVEL", ".JAR", ".VMAX",
	".PCOF", ".ICOF", ".DCOF", ".HVEL", ".NTM", ".NTMF", ".INIT", ".PREM",
	".POST", ".FLNK", ".RMOD"]
	for field in motorFields:
		val = epics.caget(fromMotor+field)
		epics.caput(toMotor+field, val)

An advantage of this strategy is that you have support for implementing moduleCopy(from,to) with multiple calls to channelCopy(from,to).  Also, it's pretty straightforward to implement verifyLastCopy(), and doing so gives you most of the infrastructure needed to implement undoLastCopy().

Tim Mooney (mooney@aps.anl.gov) (630)252-5417
Beamline Controls Group (www.aps.anl.gov)
Advanced Photon Source, Argonne National Lab


________________________________________
From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] on behalf of gennaro.tortone@na.infn.it [tortone@na.infn.it]
Sent: Saturday, March 12, 2016 4:49 AM
To: tech-talk@aps.anl.gov
Subject: parametric PV save/restore

Hi,
my EPICS IOC has a set of PV of this format:

<MODULE_ID>:<CHANNEL_ID>:attr1
<MODULE_ID>:<CHANNEL_ID>:attr2
...
<MODULE_ID>:<CHANNEL_ID>:attr<n>

where <MODULE_ID> and <CHANNEL_ID> is inside 0...15 interval;

I'm looking for a "strategy" to give the operator
the feature of copy the setup of a module <x> to a module
<y> or copy a setup of a channel <x><c> to a channel <y><c>;

Thanks in advance,
Gennaro

--
Gennaro Tortone
INFN Napoli
Italy
tel: +39 81 676169

"Computer Science is no more about computers
     than astronomy is about telescopes."
     - Edsger Dijkstra