6/20/2017 7:33 PM | |
Joined: 9/27/2006 Last visit: 9/25/2024 Posts: 12283 Rating: (2685) |
Hello josbar; If you get an upload of the PLC program, it can be used to download to the PLCin case of emergency, as you surmise. However, there are conditions that can stop you from getting a complete upload from your system; if the vendor is reluctant to give you the program, he might have decided to protect his PLC from write or read/write access, using a password. Read/write access protection (Level 3 password) would block you from uploading the program blocks. Your earlier posts point to S7-300 or ET 200S CPUs, so here are some documents on password protection for that family of PLCs: What options exist for assigning passwords? How can you activate the protection level with a password in the HW Config for an S7 CPU? To find out if there is a password protection enabled, you must connect to the CPU with a programming software (Simatic Manager in the case of the S7-300).So I recommend that before you launch into a purchase of the PC and hardware/software combination needed for this operation, that you bring an integrator on board so he can examine the situation and maybe prepare the uploads adequately. That way you can take your time to get familiar with the programming software and later be able to download them to the PLC. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 6/20/2017 7:33:48 PMLast edited by: dchartier at: 6/20/2017 11:00:26 PM |
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6/21/2017 5:12 AM | |
Posts: 25 Rating: (0) |
Awsome thanks for your answer. I was afraid of that... because one time I already saw that there are some OB´s protected or blocked.. I can`t even see the logic in the rutine. |
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