• Remove the RED USB Dongle from the server and plug it into a CADWorx machine or Non-CADWorx machine.  
  • Ensure the lock is lit up.  
  • Run the update utility as directed below:  
    • If updating on a Non-CADWorx download the pulse utility.  
    • If updating on a machine with 2015 CADWorx or older go to Start>All Programs>CADWorx 20XX>Plant/P&ID>HL ESL Maintenance Utility.
    • If updating on a machine with CADWorx 2016 or newer go to C:\CADWorx 20XX\Utilities and run the pulse utility (pulse.exe).


  • Once you have opened the pulse utility select Enter ESL Reauthorization Codes

  • Enter the codes provided in the rows.
    • It’s important to note that if you receive more than one code they must be applied at the same time.
    • Once the codes have been entered click OK to complete the update.
      • If there are any errors or issues contact us at

Example Access Codes:

1st Row: 1111 1111 1111 1111

2nd Row: 2222 2222 2222 2222 (if applicable)

  • Next, confirm your version by choosing Show ESL Data from the pulse utility.
    • Your version should be the year the software was released
      • For 2016 Max Version is 1215 and for 2017 max version is 1216.
  • Once you have confirmed your max version generate a log file by selecting log file in the bottom right of the Show ESL Data screen and send it to for our records.
    • When generating the log file please note the path the file goes to.  You will have to navigate there to copy the log file into an email to send to us.