Needed: Ladder Logic to State Graph Program

Michael Freitas <mfreitas@gatecom.com>
20 Oct 1996 16:53:19 -0400

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Needed: Ladder Logic to State Graph Program mfreitas@gatecom.com (Michael Freitas) (1996-10-20)
Re: Needed: Ladder Logic to State Graph Program hbaker@netcom.com (1996-10-24)
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From: Michael Freitas <mfreitas@gatecom.com>
Newsgroups: comp.compilers
Date: 20 Oct 1996 16:53:19 -0400
Organization: Gateway Online
Keywords: tools, question

Hello,


              I need a program that will derive the state graph of a finite
state machine from
its ladder or boolean logic description.
                Put into pictures, what I need is something that will take
this...


                                                | |
                                                +---]/[---] [---+------( )-+
                                                | | |
                                                +---] [---]/[---+ |
                                                | |
                                                | |
                                                +---] [---]/[----------( )-+
                                                | |
                                                | |




                Or this...


                                                            F1 = A * B' + C
                                                            F2 = A'* B + C
                                                            F3 = B * C




                And turns it into this...




                                +------+ +------+ +------+
                                | | | | | |
                                | S0 +-------->| S1 +-------->| S3 +-------->
                                | | | | | |
                                +------+ +------+ +---+--+
                                        ^ |
                                        | |
                                        +---------------------------------+




                I've been looking for a tool to do this ladder logic-to-state
graph derivation for some time, so any help locating a program that
will do it will be greatly appreciated.


--
------------------------------
+ Mike Freitas +
+ mfreitas@gatecom.com +
--

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