Exhibit 32.1

                  CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER
            PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO
                 SECTION 906 OF THE SARBANES - OXLEY ACT OF 2002


     In connection  with the  quarterly  report of Cimetrix,  Incorporated  (the
"Company") on Form 10-Q for the quarter  ended March 31, 2004,  Robert H. Reback
hereby  certifies,  pursuant to 18 U.S.C.  Section 1350, as adopted  pursuant to
Section  906 of the  Sarbanes-Oxley  Act  of  2002,  that  to  the  best  of his
knowledge:

     (1)  The quarterly  report fully complies with the  requirements of Section
          13(a) of the Securities Exchange Act of 1934; and

     (2)  The information  contained in the quarterly report fairly presents, in
          all  material  respects,   the  financial  condition  and  results  of
          operations of the Company.


Date: May 14, 2004

/s/ Robert H. Reback
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Robert H. Reback
President and Chief Executive Officer
(Principal Executive Officer)


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