How should such step descriptions be written?
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During the project implementation process, it is necessary to prepare such FDS files, namely Functional Design Specifications. I’m not sure what these documents are called in the chemical industry; they detail each step so that programmers know when each valve, pump, and other device should operate. The general format is as shown in the figure below; could some expert give some guidance?
Control flow (table). In fact, more are drawn as flowcharts directly.
sequence sequential control
Could you take a screenshot to show what it looks like?
This post was last edited by Ku Liang Zhi Le on 2019-5-23 at 14:48. It is best to create a programmed timing diagram, which shows the start time, duration, and end time of each step, as well as the time relationships between these steps. If the sequential control timeline is not understood, a Gantt chart can also be used to describe it. However, the proper term should be sequential control timing diagram.
If I do it, I’ll use an Excel sheet. It clearly indicates various valves, or the values reached by temperature and pressure, or when the timer expires, it proceeds to the next step. Some NAND gates are also drawn here to make it easier to understand. After moving to the next step, what actions do I need to take? List them all.
If I do it, I’ll use an Excel sheet. It clearly indicates various valves, or the values reached by temperature and pressure, or when the timer expires, it proceeds to the next step. Some NAND gates are also drawn here to make it easier to understand. After moving to the next step, what actions do I need to take? List them all.