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Parameter Write Lock
CAUTION – Write locks can only be removed by using the value you entered or by returning the controller to ASI to unlock, subject to the shipping & RMA fees.
Write lock or “tamper-proof” functionality prevents unqualified/unwanted users from changing controller parameter values. As required by ISO 13849 safety requirement.
Two parameters are used to control the write access functionality to the parameters in the BAC controller.
Flash Parameter Write Access Code – Address 130
Write Access Code – Address 402
To set Write Lock:
- Enter a numerical integer code into the Flash Parameter Write Access Code.
- Save this value to flash. Note that the Flash Parameter Write Access Code and Write Access Code are now different values, and any action with parameters will be prevented.
- Power cycle the controller to enable the write lock. Flash Parameter Write Access Code will appear as ‘0’ after the power cycle to hide its value.
To unlock Write Lock:
- Enter the same numerical code saved to Flash Parameter Write Access Code above to the Write Access Code parameter to enable writing to parameters.
To remove or change Write Lock:
- Enter the same numerical code saved to Flash Parameter Write Access Code above to the Write Access Code parameter to enable writing to parameters.
- Change the Flash Parameter Write Access Code to your new desired value, or set it to 0 (default) to clear it.
- Save to flash.
- Power cycle the controller to enable the new write lock value.
