On one occasion, the company's eight color wheel turning point of the Heidelberg Harris electric failure occurs, all of the buttons function failure (including on the hour, anti-point, slow, long cars, accelerated), full of red, green indicator light does not light, but all safe loop (emergency stop circuits, safedoor and bumper circuit) are normal, normal PLC input signal, but no output. There is a failure, estimated pLC intends to make maintenance, but equipped with the latest company to take into account the issue of cost, thus making it yourself for technical innovation. Now a brief scheme to be implemented are summarised as follows, to share with your peers.
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Activity form using input and output criteria, but no gateways, is more suitable for simplifying visualization of the process model by hiding the branching logic in the input and output criteria.
活动形式使用输入和输出条件，但不使用网关。它将分支逻辑隐藏在输入和输出条件中，因而更适于简化流程模型的可视化形式。
Output is fixed: you can control the input data format but must output data in a specific format, over which you have no control.
输出端固定：可以控制输入数据格式，但输出数据必须采用您不能控制的特定格式。
A wide variety of tasks can be performed prior to performing a forward, but no response headers can be set by the forwarding component and no content can be sent to the output buffer.
在转发之前可以执行很多类型的任务，但是要转发的组件不能设置响应头部信息，也不能有内容发送到输出缓冲区。
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