[foxboro] Best method for remote read-write DM/AM?

I did some searching on the list archives for this, but 8 or 9 pages into 
it, didn't really find anything specific to my question.

I want to have a PC in the control room with the ability to launch 
read-write DMs and AMs from adjacent WPs in the event of plant upsets, 
startups, ops engineer wants to play, etc.  I've defined extra DMs/AMs in 
the dmcfg file as class O, but they still come up with omsets disabled and 
access class 100 protected.  This of course is contrary to what all the 
docs I read said (dmcfg.man, Workstation Alarm Management, the X-terminal 
user guides).  I can work around it in DM, however, by enabling omsets and 
unprotecting value 100 in the initial environment file; I like this better 
anyway because there is no reboot required if I ever have to change it.


However, the alarm manager is killing me.  It will not inherit the 
unprotected 100 class from the DM (like the docs imply that it should). It 
also will not read the initial environment file, even if I define that in 
the ADMC (I tested this by including a pref -SOMEOTHERDM DMCMD "msglin 
am_activated" -- it worked when I launched the DM, but not the AM).  I can 
pref the unprotect 100 to the AM after it's up, and the buttons become 
black on cue, but I can't automate this on AM startup, since it won't read 
the environment file.  Other hacks I've considered, like a daemon script 
to 'ps' periodically for the AM and pref it, or launch it with the DM, 
wait a few, and then pref it, are just too ugly.


The only other thing that crossed my mind here is that I'm not launching 
the DM or AM as root, but as a special account I created for this purpose 
(though I made sure this account has read access to all the files in 
question, if that's even necessary).  No mention of that in the docs, but 
I wouldn't be surprised if that is the problem,  I'll probably try that 
later today, though I would not prefer to run that way.


Anyone else run across this (OK, stupid question :)?


Thanks,
Corey Clingo
BASF Corporation




 
 
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