Why is the front closed, but there are functional blocks running at the back?
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Why is it OFF at the front, yet the function block is running?
This post was last edited by hxch150804 on 2021-11-4 at 16:48. The triggering of this function block is not based on EN; rather, an output is generated when IN1 > IN2, and not via ENO. In other words, EN only affects ENO – when EN is active, ENO is also active. Therefore, if your output is green, it means that LI104.PV > 0.25
If I want to run this condition in this step, what do I need to do?
Please be clear. When discussing control, you need to understand the process requirements thoroughly; don’t give half-baked answers – strive for completeness. If you think there’s something wrong with this control mechanism, or if it doesn’t meet the technical requirements, let me know in detail. It’s possible that the current program you have isn’t perfect; there might be better solutions available.
This post was last edited by jlshnlhj on 2021-11-6 at 20:16; EN controls whether this function block runs. When EN is on and LI104.PV>0.25, this functional block outputs a signal at level on; even after EN turns off, the output remains at level on (it stays unchanged even if LI104.PV>0.25 is no longer satisfied). When EN is on and LI104.PV > 0.25, the output is on; if EN becomes off, the functional block stops performing comparisons, and the output remains on as it was. EN is on, LI104.PV
When EN is set to off, the output remains unchanged; I had asked the control unit about this before