text: <s>[INST] 160 ssc program lock I have several 160 ssc drives that have program lock parameter 57 set to 1 [locked] and when I try to set to 0 [unlock] nothing changes . this happens on all 4 units. I must be doing something wrong. Is there another way to reset program lock ? 2 of the units have s02 option changes par 57 = 000/999/000 [ min/max/default] locked at 1 others are par 57 = 0/1/0 locked at 1 these units are new in box, but from reseller . they work but with the locked parameters. thanks for any help. [/INST] As far as I can see from manuals, the only (and easy) way to reset it is to set the parameter to 0. Different situation for the drives with S02 option, where an integer data is needed as password. Program Lock Password The S02 option provides a program lock feature with a three digit integer (standard lock feature uses a single digit). All program group parameters will be locked unless the correct integer is entered in P57 - [Program Lock]. This parameter value will re-initialize to “000” or relock whenever power is cycled. The program unlock will also be required when using communication modules after the power is cycled. - fuzzy logic \\n </s>