2/9/2014 11:22 PM | |
Posts: 13 Rating: (0) |
I don’t think it’s the values in DB6 which are the source of the problem, I think it’s the sheer size of the load memory taken by FB6/DB6 that’s causing the problem. Once I delete FB6/DB6 from ONLINE and re-download them, CPU seems to be suddenly relieved from whatever burden it was suffering from and returns to normal operation after a restart. I am dealing with about 8 more CPU 412-1DP with exactly the same program yet half the size (fewer PID controllers). They don’t have this particular problem. Scan cycle as shown in the attachment is between 7 and 11 ms. Work memory is about 91 percent after compressing (almost no change). There is problem with firmware version which I need to correct in the hardware (ironically when I once generated Sdata for Ver 3.1 the CPU went into stop and could not be restarted under any condition, thus I downloaded the old Sdata). AttachmentCPU 412-1DP.pdf (432 Downloads) |
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