To preferentially execute an instruction with higher priority in a case of the CNC being unable to respond due to being an unresponsive timing, load on the bus or the like. A PLC device includes: a special instruction control unit that sets a priority degree indicating a degree of priority for executing predetermined processing to a special instruction for performing the predetermined processing in a control device that controls an industrial machine, and transmits the special instruction in which the priority degree is set to the control device; an instruction storage determining unit that determines whether or not to queue the special instruction according to an operation state of the control device; and an instruction storage unit that sequentially stores the special instruction received, on the basis of a determination result of the instruction storage determining unit.

To preferentially execute an instruction with higher priority in a case of the CNC being unable to respond due to being an unresponsive timing, load on the bus or the like. A PLC device includes: a special instruction control unit that sets a priority degree indicating a degree of priority for executing predetermined processing to a special instruction for performing the predetermined processing in a control device that controls an industrial machine, and transmits the special instruction in which the priority degree is set to the control device; an instruction storage determining unit that determines whether or not to queue the special instruction according to an operation state of the control device; and an instruction storage unit that sequentially stores the special instruction received, on the basis of a determination result of the instruction storage determining unit.

The preferred embodiments described below include methods, systems and computer readable media for generating programmable logic controller (PLC) code based on a connectivity model in a multidisciplinary engineering system. The connectivity model provides interfaces 613 and 617 and connections 619 between various aspects of the multidisciplinary engineering system to provide engineering data, code scripts, executables, calls and other information that is used to generate PLC code. Code generation rules 621 are employed utilizing the engineering data, code scripts, executables, calls and other information received using the connectivity model to generate PLC code.

The preferred embodiments described below include methods, systems and computer readable media for generating programmable logic controller (PLC) code based on a connectivity model in a multidisciplinary engineering system. The connectivity model provides interfaces 613 and 617 and connections 619 between various aspects of the multidisciplinary engineering system to provide engineering data, code scripts, executables, calls and other information that is used to generate PLC code. Code generation rules 621 are employed utilizing the engineering data, code scripts, executables, calls and other information received using the connectivity model to generate PLC code.