| 摘要 |
PURPOSE:To facilitate easy programming even with a complicated sequence including the branching, the queuing, etc. by delivering a state input instruction and a state shift instruction and controlling the shifts among plural control states by means of an input condition table. CONSTITUTION:When operands R1 and R2 of state input instructions 200 and 201 are turned on at a time, both operands are registered to an input condition register table together with an output turned on. When the external input conditions X1 is turned on under such conditions, the input signal of a state shift instruction 210 is turned on. As a result, an operand R3 is turned on with operands R1 and R2 turned off. The control state is shifted to the R3 from the R1 and R2. When the R3 is turned on, the operand R3 of a state input instruction 202 is registered to the input condition table. Then the output of the table is turned on together with the external input conditions X2 or X3 turned on respectively. Then the input signal of a state shift instruction 211 or 212 is turned on. Thus an operand R4 or R5 is turned on, and the control state is changed to the R4 or R5 from the R3. |
