Siemens PLC system written answer

Hello everyone I'm your friend JamesBin, today we use the knowledge we have learned to write a three-Responder system. The following look at the requirements and implementation program

Procedural requirements

  1.1、能够实现启动停止

  1.2、主持人拥有复位按钮

  1.3、选手有先按启动后按无效

Show results

Let's look at the results

Program shows

Block 1:

Block 2

Explain ideas

1, first using power from protection path as an enabling signal, of course, be implemented using a single switch
2, the answer to the part of the program is placed after the start, for controlling the operation of the answer section
3, since the host has a reset button, so was added in front of each player reset button normally closed contact
4, since there have answer points, the other players can be added in front of each player Responder successful normally closed contact
5, the program mainly from road holding power, object so that everyone is familiar with the use of stop Paul from

wincc picture to explain

First need to clear all the switches are subject without self-locking switch, i.e. clicking ON (OFF), let go OFF (turned on)
in FIG all switches are provided for this purpose:

All the above is the content, what problems can leave a message in the comments section! ! !