Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  <20102011  2012  2013  2014  2015  2016  2017  2018  2019  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  <20102011  2012  2013  2014  2015  2016  2017  2018  2019 
<== Date ==> <== Thread ==>

Subject: Re: INP field length
From: "Steve Kinder" <steve@dsoft-solutions.co.uk>
To: "Andrew Johnson" <anj@aps.anl.gov>, <tech-talk@aps.anl.gov>
Date: Mon, 15 Mar 2010 15:46:42 -0000
Hi Andrew

Thanks for the reply, that was what I thought. But just to clarify my specific case. I'm using StreamDevice2 and have a INP field as follows with template/substitution.

field(INP, "@TEST.protocol getCs($(DEVICE),C2,C3,C4) $(port) 0")

If I understand things correctly, whatever the length of DEVICE and port I shouldn't encounter problems. Well due to the length of the field at least.

Regards

Steve

----- Original Message ----- From: "Andrew Johnson" <anj@aps.anl.gov>
To: <tech-talk@aps.anl.gov>
Cc: "Steve Kinder" <steve@dsoft-solutions.co.uk>
Sent: Monday, March 15, 2010 3:30 PM
Subject: Re: INP field length



Hi Steve,

On Monday 15 March 2010 04:45:15 Steve Kinder wrote:
Is there any length restriction on an INP field, before or after the
expansion of any macros it may contain?

Unlike many places inside the IOC, there is no built-in length limitation to
the value that can be placed in a link field using dbLoadRecords(), which
means that the @parm part of a hardware link address can be as long as you
like.


Of course if you want to read or update the field through CA there is a 40
character limit to the string you can pass as a DBR_STRING, and with the new
array-of-chars support in 3.14.11 using the @ field modifier I believe CA will
still limit you to passing at most 72 characters to/from a link field.


HTH,

- Andrew
--
The best FOSS code is written to be read by other humans -- Harald Welte






Replies:
Re: INP field length Andrew Johnson
Re: INP field length Dirk Zimoch
References:
INP field length Steve Kinder
Re: INP field length Andrew Johnson

Navigate by Date:
Prev: Re: INP field length Andrew Johnson
Next: Re: INP field length Andrew Johnson
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  <20102011  2012  2013  2014  2015  2016  2017  2018  2019 
Navigate by Thread:
Prev: Re: INP field length Andrew Johnson
Next: Re: INP field length Andrew Johnson
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  <20102011  2012  2013  2014  2015  2016  2017  2018  2019 
ANJ, 02 Sep 2010 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·