| 摘要 |
PURPOSE:To execute a sequence control containing a control of a continuous quantity by changing an operational condition and annihilating a token, when a block for changing the operational condition is started, and generating the token in a block to be started, when a set condition is formed. CONSTITUTION:A token is annihilated by a control input for changing an operational condition, and from a control output, the token is generated. That is to say, when the token is inputted, the control input changes a data of its box, and the token which has been inputted from the control input is annihilated. That is to say, the control input becomes a sink box for erasing the token. On the other hand, when a set condition is formed in the course of executing an operation of the box, a token is generated from the control output, the box following it is started, and the control output becomes a source box for generating the token. |
