| 摘要 |
PURPOSE:To connect and display logic symbols (LGS) automatically by providing a memory stored with a program (PG) converting another PG stored in a main memory into LGSs, a symbol generator generating LGSs, etc. CONSTITUTION:A PG stored in the main memory 33 of a sequence (SQ) controller 3 is stored in a buffer memory 24. Through operation on keyboard 27, the PG stored in the memory 24 is converted into another PG, corresponding to LGSs, under the control of a control circuit 25 according to a conversion PG stored in an ROM26, and they are stored in a refresh memory 22. Under the control of the circuit 25, a signal represented by LGSs from a symbol generator 23 is displayed on a CRT1 through a CRT controller 21 according to a conversion PG stored in a memory 22. In this case, the initial position of the arrangement of the LGSs on the CRT1 is determined according to the number of input signals connected to the LGSs and connections between the LGSs and input signal lines connected to them are made via the shortest short circuits while prescribed curvature is permitted. |
