Re: [foxboro] DCI PAKOUT

If you want radio buttons on a FV display to change bits in a word, it's
not easy, but it can be done.

Use init.user to create RB01 through RB16 (or RB32).
Use init.user to create MRB01 thorugh MRB16 (or MRB32).

Create a display with three rows of boxes. 

The first row of boxes will work as follows:
1) Fill with RED(0) or GREEN(1) based on the value of RBxx.
2) Toggle value of RBxx when clicked (or use two steps)

The second row of boxes will work as follows:
1) Fill with RED(0) or GREEN(1) based on the value of MRBxx.
2) Toggle value of MRBxx when clicked (or use two steps)

Before the 3rd row, add a COMMIT button. This runs a script to make the
change.

The 3rd row shows the actual state of the target packed Boolean using
the normal FV bit masking capabilities. 


The COMMIT button should run a DM/FV script to invoke the omset (use
omsetimp by the way) just as you wrote it. Here's an example:

dmcmd script
dmcmd run /opt/fox/bin/tools/omset -pl $MRB01$MRB02...:$RB01$RB02...

where the ... is all the stuff I don't want to type. 


Sequence blocks can run scripts as well and they can pass arguments to
the scripts. I'll send you a write-up to give you some clues on how to
do that. 


Does this help?


Regards,
 
Alex Johnson
Invensys Process Systems
10900 Equity Drive
Houston, TX 77041
713 329 8472 (desk)
713 329 1600 (operator)
713 329 1944 (SSC Fax)
713 329 1700 (Central Fax)
alex.johnson@xxxxxxxxxxxxxxxx

-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Goldie, Shaun S
Sent: Monday, September 29, 2008 2:10 PM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] DCI PAKOUT

Hi List
I am trying to write the PAKCO parameter of a PAKOUT DCI block from both
graphics and IND sequence external write
The problem is the parameter is a packed long with a mask, the mask is
needed to set individual bits without overwriting others

omset -pl 0x80000000:0x80000000 will successfully set bit one but how do
you configure this inside a graphic or in sequence code
Shaun 




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