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220v-950w电热管 220v-950w加热管 220v-950w单头加热管

发布时间: 2015-11-13 22:44 作者: 浏览次数: 字号:
220v-950w电热管	220v-950w加热管	220v-950w单头加热管

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220v-950w单头加热管

220v-350w电热管 220v-350w加热管 220v-350w加热器

220v-350w电热管 220v-350w加热管 220v-350w加热器

and procedure for roughly as follows:
(1) according to the requirements of control, PLC I/O allocation list, draw the PLC wiring diagram.
(2) the whole process control process steps are decomposed according to their work priorities, every step corresponds to a state, the action of each state should have several requirements and functions of heart, and according to the conditions determine the direction of the transfer and transfer.
(3) draw the functional diagram of the control system.
(4) the functional diagram into ladder diagram and instruction list.单头加热管
2, programming instance220v-950w单头加热管
Example: the intersection traffic light control system, the requirements are as follows; Start after SB1 switch is closed, the north-south turns red, 30 s, at the same time something green light after 25 s, 3 s, shiny things yellow lights 2 s, and then, something red light to maintain the 30 s, at the same time north and south green light after 25 s, 3 s, shiny north and south yellow lights 2 s. The cycle. According to the SB2, the system stops running. Asked for ste

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