PCC programable controller and HITECH touch screen data interchanging method

Abstract

The invention relates to a method for data switching between a programmable controller PCC and a HITECH touch screen. The invention belongs to the field of programmable control technology. The method for data switching between a programmable controller PCC and a HITECH touch screen comprises the steps of: 1) hardware interface configuration and connection type comprising that RS232 serial communication cables are used to connect a RS232 communication interface of the PCC with a COM serial port of the touch screen; 2) communication settings comprising that operating parameter list is activated from the application drop-down menu, the PCC is set as a slave station, and communication protocol of the COM communication port is set on the software platform of the touch screen; and 3) program control comprising that the communication port RS232 is opened, the bit address and the word address of the touch screen are respectively corresponding to the bit address and the word address of the PCC, and the software programming controls to read data-word address, write data-word address and read and write bit address. The present invention solves the problem of data switching between a PCC and a HITECH touch screen which are matched with each other, and provides a programming mind and design method to users of the PCC. The present invention is convenient and practical.

Description

technical field [0001] The invention belongs to the technical field of programmable control, in particular to a method for exchanging data between a PCC programmable controller and a HITECH touch screen. Background technique [0002] At present, various types of PLCs can usually be identified inside the touch screen, so users can directly read, write and program PLC variable addresses in the touch screen software, but there are technical difficulties in data exchange between touch screens and PCC products. Because the PCC of B&R Austria has obvious advantages over ordinary PLC in terms of crystal oscillator frequency (6.29MHz), floating-point calculation and time-sharing multitasking operating system, the application of PCC is becoming more and more extensive. PCC can be effectively compatible with B&R's touch screen, but it is not yet compatible with other manufacturers' touch screens. Because other touch screens do not recognize PCC products internally, the touch screen c...

AI Technical Summary

Problems solved by technology

PCC can be effectively compatible with B&R touch screens, but it is not yet compatible with other manufacturers' touch screens

Because other touch screens do not recognize PCC products internally, the touch screen cannot be directly programmed for the PCC address, making it difficult to read data from the touch screen, and even some touch screens have technical problems such as the inability to establish a connection with PCC because they do not support the Modbus protocol.

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