6AV6542-0BB15-2AX0触摸屏

5069OF4-

5069OW16

5069OW4I-

如 图7 编程元件示例程序 图7所示程序中，WR0即为字元件，是左移位指令SR的编程元件，而Y0为输出软继电器的线圈，X0、X1、X2、X3则为输人软继电器的触点，其中第4步的R4触点为位元件R4的常开触点，而位元件R4又是字元件WR0中的一位，因此其状态受限于WR0的移位结果。 四、顺序控制多步同输出的编程方法 顺序控制是生产现场常见的一类控制任务，步进指令是PLC指令库中于顺序控制的。步进指令编程时，根据工艺流程将程序划分为一个个立的程序段，执行时，CPU严格按梯形图编程顺序，只有执行完段程序后才能激活下一段程序，并在下一段程序执行之前，将前面程序段复位。并且在语法上要求各程序段所使用的输出不允许重复。这在解决顺序控制任务中有多步同输出的情况时，就带来了一定的困难。借助于内部通用继电器可方便解决这一难题。如某一顺序控制任务如以下流程图

IPC277D Siemens 6AV7881-2AE00-3DG0 Simatic 6AV7 881-2AE00-3DG0 Nanopanel 9" HMI

IPC277D Siemens 6AV7881-2AE00-3DG0 Simatic 6AV7 881-2AE00-3DG0 Nanopanel 9" HMI 

SIEMENS 6AV7 892-0FE10-1AB0 - -

SIEMENS 6AV7 892-0FE10-1AB0 - - 

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Siemens 6AV7240-3BC04-0HA0 Simatic IPC477D 6AV7 240-3BC04-0HA0 Ipc 477D Pannello 

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Siemens 6AV7660-5DB00-2AT1 FI45-V2LS120 6AV7 660-5DB00-2AT1

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Siemens 6AV7660-5DB00-2AT1 FI45-V2LS120 6AV7 660-5DB00-2AT1 

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Siemens 6AV7672-1CE00-0AA0 1stk. Protective Film 19 6AV7 672-1CE00-0AA0

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Siemens 6AV7674-0NE00-0AA00 Inox  board for Simatic 6AV7 674-0NE00-0AA00

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Siemens 6AV7725-1AC10-0AD0 Simatic Panel PC 670 6AV7 725-1AC10-0AD0   

Siemens 6AV7725-1AC10-0AD0 Simatic Panel PC 670 6AV7 725-1AC10-0AD0   

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