摘要 |
The invention relates to a method for converting traditional ladder diagr ams for programmable controllers according to model 984, for example, said t raditional ladder diagrams being read and executed column by column, into la dder diagrams for IEC 61131-oriented controllers, for example, said ladder d iagrams being read and executed in a data flow-oriented manner. In order to carry out said method, it is determined in the ladder diagrams that are trad itionally read and executed column by column whether variables are provided on coils as well as on contacts within the network, and it is determined whe ther the contact is processed according to model 984 in front of the associa ted coil and according to the IEC model behind the associated coil. If so, a n additional variable is generated for each such variable, and the additiona l variable is fed to the respective contact instead of the original variable . Furthermore, a contact comprising the original variable is connected to a power supply simulation at the end of the network, followed by a coil encomp assing the generated variable.
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