ABB RET670 1MRK002816-AB Protection of Power Systems

ABB RET670 1MRK002816-AB Protection of Power Systems

The PLC in the ABB RET670 1MRK002816-AB has integrated the baud rate setting and other functions for serial communication into the serial parent device, so the PLC device driver is provided as a child device in the device management window of the MCGS monitoring software. Therefore, PLC device driver is provided as a child device in the device management window of MCGS monitoring software. It can use the communication function of the parent device, that is, it can share the communication function of the parent device with other devices.

ABB RET670 1MRK002816-AB has more PLC devices using serial port, here we take PLC using serial port communication method as an example to illustrate the development of PLC universal driver framework. This PLC driver architecture is also applicable if a customized programming cable is used or if an Ethernet connection is used.

ABB RET670 1MRK002816-AB PLC with serial communication can communicate with the host computer in RS232, RS485 and RS422. If a device communicates using RS232, only one device can be connected to a serial port. If RS485 or RS422 is used for communication, then multiple devices can be used to form a network, in which a flag is added to each device in order to recognize the different devices, which is generally called the device address.