| 摘要 |
PURPOSE:To make an adjusting work of a facility simple by installing a programming circuit between PLC (programmable logic controller), connecting a programming device to a desired PLC in a software manner and communicating the data. CONSTITUTION:Plural PLCs 15-18 are connected to facilities 1-4 of a production line, and further, a programming device 41 is installed. Respective PLCs 15-18 are linked with a data exchange device 12, the programming device 41 is connected with PLC17 by a communicating circuit 42, and the circuit 42 is connected with a programming circuit 50 between PLC. Thus, transmitting data from the programming device 41 are sent through a circuit in the PLC17 to the circuit 50 and a deciding gate circuit, and can be received with all PLC. For this reason, while the programming device 41 is connected to PLCs 15-18 located at the processing unit to be adjusted, the program of dispersed and arranged PLCs 15-18 can be prepared and corrected. |
