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<== Date ==> <== Thread ==>

Subject: Re: Retrieving the monitored values of Waveforms.
From: cha@aps.anl.gov (Ben-chin K. Cha)
Date: Mon, 24 Apr 1995 16:43:45 -0500
> 	Has anyone added support for the retrieval of the monitored value
> of waveforms? I'm asking 'cause I'm doing archival of some ARCH records (which
> look like waveforms) under CaWave and from what I can see CaWave.pro, CaWave.c,
> and ultimately caevent.c doesn't support this. They support scalar PVs and
> lists of scalar PVs, not waveforms.
>

You are right, currently, the CaWave does not support the monitoring of the 
waveform record.
 
> 	I really need to grab the value associated the monitor since the contents
> of the ARCH record will have changed on me (without monitors posting) if I
> grab the value from the IOC.
> 
> 	Any help or pointers would be greatly appreciated! (I really don't want
> to rewrite parts of caevent.c right now).
> 
> 	BTW, I'm using R3.12beta1.Gemini.
> 

However, in the aps_wish ( a TK/TCL version of channel access) it supports the
monitoring of waveform record in HEX/BINARY/DECIMAL.  It is available as an 
extensions tool. The usage of monitor of waveform can be found in the simple 
document 
      /usr/local/epics/extensions/doc/aps_wish.doc.

If the document does not mention the monitoring of waveform record, you need get
the new release epics/extensions. 

An example of monitoring an waveform record 'chademowf2' in aps_wish is given below:

	aps_wish
	ezcasetmonitor chademowf2
	set WF(chademowf2)

The above 'set WF' command will print the current values of the wave from record.
	
Ben-chin 


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