8/25/2019 776856 - Lock for Update Fails Lock for Update Fails 776856 | Date Created: 03/02/2016 | Last Updated: 05/29/2019 Access Level: TechConnect Print Question Why am I failing a lock for update when going through the procedure for redundancy systems? Abort - Invalid response received from a module to "Lock for Update" command Answer Ensure there are none of the following: Pending edits Forces Project inconsistencies Incorrect firmware for communication modules I/O faults If there are faults (16#0203, 16#0204 etc) on I/O and it's known, inhibit the modules before starting the lock for update procedure. Major hardware differences (1756-RM and 1756-RM2, 1756-L65 and 1756-L75, etc.) Notes: The modules in the redundancy rack need to be at a supported bundle initially in order to update the system while online If the existing system isn't at a supported bundle then it will not be able to be updated while online When migrating from 19 -> 20 there is a potential anomaly. This is explained in 917386 - Redundancy Module Configuration Tool: Redundancy System Update Unable to Lock for Update (//rockwellautomation.custhelp.com/app/answers/detail/a_id/917386) If all of this has been checked and the error is still occurring then please contact TechSupport. DISCLAIMER https://rockwellautomation.custhelp.com/app/answers/detail/a_id/776856 1/2 8/25/2019 776856 - Lock for Update Fails This knowledge base web site is intended to provide general technical information on a particular subject or subjects and is not an exhaustive treatment of such subjects. Accordingly, the information in this web site is not intended to constitute application, design, software or other professional engineering advice or services. Before making any decision or taking any action, which might affect your equipment, you should consult a qualified professional advisor. ROCKWELL AUTOMATION DOES NOT WARRANT THE COMPLETENESS, TIMELINESS OR ACCURACY OF ANY OF THE DATA CONTAINED IN THIS WEB SITE AND MAY MAKE CHANGES THERETO AT ANY TIME IN ITS SOLE DISCRETION WITHOUT NOTICE. FURTHER, ALL INFORMATION CONVEYED HEREBY IS PROVIDED TO USERS "AS IS." IN NO EVENT SHALL ROCKWELL BE LIABLE FOR ANY DAMAGES OF ANY KIND INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS PROFIT OR DAMAGE, EVEN IF ROCKWELL AUTOMATION HAVE BEEN ADVISED ON THE POSSIBILITY OF SUCH DAMAGES. ROCKWELL AUTOMATION DISCLAIMS ALL WARRANTIES WHETHER EXPRESSED OR IMPLIED IN RESPECT OF THE INFORMATION (INCLUDING SOFTWARE) PROVIDED HEREBY, INCLUDING THE IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, AND NONINFRINGEMENT. Note that certain jurisdictions do not countenance the exclusion of implied warranties; thus, this disclaimer may not apply to you. https://rockwellautomation.custhelp.com/app/answers/detail/a_id/776856 2/2
