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Mode of operation of the PL7_3_TIMER timer function
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Original instructions
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Mode of operation of the PL7_3_TIMER timer function
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Original instructions
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Effect...
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Description
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of a cold restart
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(%S0=1), causes the writing of the preset value (defined in configuration) in the current value and the resetting to zero of the "Done" output, with any preset value modified during adjustment (terminal) being lost.
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of a warm restart
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(%S1=1) has no effect on the current value of the timer or on the preset value.
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a change to stop, deactivation of a task or execution of a breakpoint
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Does not freeze the current value.
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of a program jump
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The fact of not scanning the instructions where the timer block is programmed does not freeze the current value ET which continues to decrease towards 0.
Similarly the two output bits retain their normal operation and can thus be tested by another instruction. On the other hand, the coils directly cabled to the outputs are not activated since they are not scanned by the PLC.
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