[foxboro] AW: dmcmd from HLBL
- From: "Rameil, Marcel" <Marcel.Rameil@xxxxxxxxxxxxxxxxxxxxxx>
- To: "foxboro@xxxxxxxxxxxxx" <foxboro@xxxxxxxxxxxxx>
- Date: Mon, 11 Jan 2016 07:31:10 -0500
Dirk,
Is there a way to check in HLBL if certain foxview sessions exist?
Not in a reliable manner that I know of.
I suggest instead to build an exception routine in HLBL that handles block
exceptions (like accessing not existing parameters) in a defined manner. For
many projects I used the following code snippet. SN0001 and MSGGR1 are used for
error reporting in this case (I used a printer port and avoided sending these
messages to operators) as a general convention in all sequence blocks that use
this subroutine. Also the global String S12 named "BLOCK_NAME" needs to be
created in the main code section for this routine to work. Certainly all this
can be adjusted, please use this as a hint how things could go.
I hope this makes any sense to your application.
===========================
{*********************************************************
*
* Block-Exceptions for non-batch Sequence Code
*
* can be used as a starting point for your own SBX
* please note: This is software from an arbitrary
* project to be used as-is without warranty or support.
* This is NOT Foxboro standard software and should only
* be used by experienced engineering personnel which
* is able to adapt it to the local programming
* environment. These routines however are proven in
* use in real world existing projects. If you do not
* understand the code herein look for qualified
* HLBL coding training.
*
* For precise, brief and short questions you may write
* an email to marcel.rameil@xxxxxxxxxxxxxxxxxxxxxx.
*
* This Code needs the global String (S12) variable
* "BLOCK_NAME" to be created in the main code to work.
*
* May 2005, Marcel Rameil, Invensys Duesseldorf, Germany.
*
*********************************************************}
BLOCK_EXCEPTION TO_SYS_ERROR
STATEMENTS
IF OP_ERR = 3 THEN
SN0001 := "!!! SYS_ERR: BAD SET! OP_ERR ",OP_ERR,", B_STMNO
",BLOCK_STMNO,", SUBR_LEV ",SUBR_LEVEL,"!";
ELSEIF OP_ERR = -1 OR OP_ERR = -45 THEN
SN0001 := "!!! SYS_ERR: PARM not found! OP_ERR ",OP_ERR,", B_STMNO
",BLOCK_STMNO,", SUBR_LEV ",SUBR_LEVEL,"!";
ELSE
SN0001 := "!!! SYS_ERR: OP_ERR ",OP_ERR,", B_STMNO ",BLOCK_STMNO,",
SUBR_LEV ",SUBR_LEVEL,"!";
ENDIF;
{ configure alarm devices to MSGGR1 }
SENDMSG(SN0001) TO MSGGR1;
{ Activate Boolean Monitor Input if required }
{ :COMP:MON_BLOCK.BI000X := TRUE; }
{ wait 5 seconds for Exception block to get active }
WAIT 5.0;
ENDEXCEPTION
BLOCK_EXCEPTION TO_USR_ERROR
STATEMENTS
SN0001 := "!!! USR_ERR: OP_ERR ",OP_ERR,", B_STMNO ",BLOCK_STMNO,", SUBR_LEV
",SUBR_LEVEL,"!";
{ configure alarm devices to MSGGR1 }
SENDMSG(SN0001) TO MSGGR1;
{ Activate Boolean Monitor Input if required }
{ :COMP:MON_BLOCK.BI000X := TRUE; }
{ wait 5 seconds for Exception block to get active }
WAIT 5.0;
ENDEXCEPTION
BLOCK_EXCEPTION TO_MANUAL
{ This exception switches the own MA input back to TRUE in case someone put
it to FALSE }
STATEMENTS
WAIT 1.0;
block_name := BLOCK_NAME;
::'block_name'.MA := TRUE;
ENDEXCEPTION
BLOCK_EXCEPTION TO_PAUSED
STATEMENTS
SN0001 := "!!! BLOCK->PAUSED: B_STMNO ",BLOCK_STMNO,", SUBR_LEV
",SUBR_LEVEL,"!";
{ configure alarm devices to MSGGR1 }
SENDMSG(SN0001) TO MSGGR1;
ENDEXCEPTION
===========================
best regards - mit freundlichen Grüßen -
Marcel Rameil
_____________________________________________________________________________________
Marcel Rameil | Schneider Electric Systems Germany GmbH | Industry
Business | Germany, Austria, Switzerland, Eastern Europe | Technical
Sales Consultant Systems
Phone: +49 2131 4062 302 | Fax: +49 2841 1691107 | Mobile: +49 172 3980 302
Email: marcel.rameil@xxxxxxxxxxxxxxxxxxxxxx | Site: : www.iom.invensys.de
| Address: Hermann Klammt Strasse 1-3, D 41460 Neuss, Germany
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-----Ursprüngliche Nachricht-----
Von: foxboro-bounce@xxxxxxxxxxxxx [
mailto:foxboro-bounce@xxxxxxxxxxxxx] Im ;
Auftrag von Dirk Pauwels
Gesendet: Montag, 11. Januar 2016 13:21
An: foxboro@xxxxxxxxxxxxx
Betreff: [foxboro] dmcmd from HLBL
Hi list,
Is there a way to check in HLBL if certain foxview sessions exist?
I want to avoid the -45 error if a sequence sends a dmcmd to a non existing
session. I know I can "handle" the error in the exception handler, but want to
avoid the error from happening.
Thanks & Rgds,
Dirk
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