1 touch screen calibration
Do not touch on time can calibrate the touch screen. The touch screen power supply, 4.3 inches, 5 inches on the battery cover there is a key system, 7 inch, 10 inch back has a hole below key system. Press, will hear the buzzer called sound. Now enter the calibration images. According to the prompts for the calibration. Calibration to cross the central position of the alignment for the finer things.
2 touch screen and PLC communication speed.
A. a picture address should be continuous.
B. do not have to monitor the address, address can be monitored untick.
C. can improve communication baud rate.