Siemens S7-1200plc can not be powered off by using the high-speed counter timer. The ordinary data block can be used according to the method of A Ming teacher: it can be set in the data block. The DB block of the S7-1200 must be "retentive".
If the retention is checked in the DB block, the data can be saved by the breakpoint;
However, be aware that there are two cases: if the DB block is only symbolic access, you can check the part; if not, you must check all or all of them.
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