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220v-1100w电热管 220v-1100w加热管 220v-1100w单头电热管

发布时间: 2015-11-13 22:47 作者: 浏览次数: 字号:
220v-1100w电热管	220v-1100w加热管	220v-1100w单头电热管

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  • 220v-1100w单头电热管

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220v-1100w单头电热管

220v-450w电热管

220v-450w电热管

he following: I/O allocation table
(2) the whole process control process steps are decomposed according to their work priorities, every step corresponds to a state. Action requirements of each state shall have the number and function of heart, and transfer conditions and transfer direction were determined.
According to the requirements of the stepping seq220v-1100w单头电热管uence control programming, a sequential function chart should have at least an initial step, step to S0 as early. Early steps are generally in a waiting starting command (or stop reset), and then often start button, unable to realize the automatic cycle, therefore starting step S10 should add cycle. At the same time will be run in parallel with two branches from here. First branch: what road, with S20 step, the action steps for the green light for 25 s (Y0), transition conditions for T0 timer; Step with S21, control the green light flash 3 s (Y0), transition conditions for T1, set S22 for yellow lights 2 s (Y1), transition conditions for T2, set S23 step for 30 s (Y2), red light transition conditions for T3, steps make S24 merges into the waiting. Use S30 of the second branch, north and south road, the action steps for 30 s (Y3), red light conversion conditions for timer T4; With S31 step, controlling the green light (Y4), 25 s transition conditions for T5, set S32 for the green light flash 3 s (Y4), transition conditions for T6, set S33 step for yellow lights 2 s (Y5), transition conditions for T7 has, make S34 steps, merges into the waiting. S24, S34 rendezvous after transfer to step S10 into circulation.
(3) according to the above ideas, draw the functional diagram of the control system.

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