Re: [foxboro] Foxboro's programming

Herman,

Most of Foxboro I/A programming is via function blocks.

At it's simplest, a motor or valve is programmed with an AOUT (analog 
out) or COUT (contact out) block.  There are more complex blocks like 
MTR, VLV, and a number of variations on that theme that provide things 
like an alarm after a given time if a feedback or limit switch isn't 
reached.

For programming things that can't be done with the suite of predefined 
function blocks Foxboro provides several types of programmable function 
blocks.  The CALC, MATH, LOGIC and CALCA blocks can have up to 20 or 50 
steps of logic available, a number of memory registers and have a small 
stack - programming these blocks is like programming an HP calculator.

For more complex tasks, I/A provides Sequence Logic blocks to execute 
HLBL (a structured text language similar to Pascal).

Foxboro has an SFC programmer as well that generates Sequence Logic.

Next, the PLB block provides high speed ladder logic which executes in a 
fieldbus module directly.

Finally, Foxboro provides easy to use commands that operate on the 
Windows or Solaris operator/engineering workstations that allow (among 
other things) programs running on the workstations to read from and 
write to the control sytem function block's parameters.

Programming the Operator Graphics (Foxview or Display Manager) is fairly 
straightforward - first draw the graphics with CAD like tools, and then 
connect the graphic objects to control logic objects.

Regards,

Kevin FitzGerrell


Stadler, Herman wrote:
> Hi David
> 
> I've never been exposed to Foxboro's programming and is looking for an=
>  example of e.g.. how a motor or valve is programmed. I did extensive=
>  programming wit Step M on the Siemens Teleperm Me DCS. I've also done a=
>  lot of programming with Siemens S5/S7, Allen Bradley Controllogix, but I=
>  could not identify anything I saw on the Net. What programming languages=
>  are available?=0D
> 
> Regards
> 
> Herman
> 
 
 
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