programmable link
2.The specific method is as follows: NS8 series programmable terminal (PT) communicates with CJ1M-CPU23 programmable controller by RS-232C. CJ1M-CPU23 programmable controller connects with CJ1M-CPU13 programmable controller in Controller Link network connection. CJ1M-CPU13 programmable controller connects with CPM2A programmable controller in Device-Net network connection.
3.We designed the interface circuit between infrared transceiver and COM port of computer, the interface circuit between infrared transceiver and interface HUB, infrared HUB circuit. According to hardware circuit, we programmed corresponding software such as link control of infrared HUB, data transfers control, communication control interface of extension and logic relation of complex programmable logic device (CPLD).
