Exhibit 23.1 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS The Board of Directors of Cimetrix, Inc.: We hereby consent to the use in this Registration Statement on Form S-8 of our report dated February 11, 2004 relating to the financial statements of Cimetrix, Inc., and to the reference of our Firm in the Registration Statement. /S/ TANNER + CO. Salt Lake City, Utah August 26, 2004