LED显示屏控制卡,条屏控制卡常见问题解答

LED显示屏控制卡,条屏控制卡常见问题解答 Hardware connection 1, how to determine whether the control card works properly? A: after the control card is connected to the power supply, please observe the power indicator first. The red light indicates that the 5V voltage is connected. If not, please turn off the 5V power immediately. Check whether the working voltage of 5V is connected, whether it is overvoltage, reverse connection, failure, output short circuit and so on. Power supply for the control card using a separate 5V power supply. If the red light doesn't work, you'll have to fix it. 2, the control card under normal circumstances, why the screen does not show or brightness abnormal? Answer: the control card is electrically connected with the display drive, the default is 16 scan, if no display, please check the control software data in polar and polar OE settings are correct; if the brightness anomaly, a particularly bright, said OE set, the right to set up OE. 3, when transmitting information to the control card, does the system prompt "error" and "fail to deliver"? Answer: please check the communication interface is correct, the control card jumper whether jumped in the corresponding level position, "control card settings" in the parameters are correct. Also, whether the working voltage is too low, please use multimeter to ensure that the voltage is above 4.5V. 4, why the information loaded, the screen does not display properly? Answer: check whether the scan output selection is correct in the "control card settings". 5, why the communication between 485 networks is not smooth? Answer: please check the communication line connection is correct, cut the error to each screen communication line connected to the computer interface, this will produce strong reflection wave, to the transmission signal cause serious interference. Proper connection shall be adopted. See the use and notice of communication interface for details. 6, how to solve the problem of unblocked communication when using GSM data transmission or remote dialing? Answer: when the communication occurs after the connection is not unblocked, if you don't know where the problem is, you can take the method of segment detection. Check it is not a MODEM problem, and disconnect the MODEM control card is connected, the MODEM is connected to another computer, so that the sender and the receiver MODEM is connected to the computer, and out of control system. Download a software called "serial debugging assistant" from the Internet and install and debug MODEM after installation. The receiving end of the MODEM is set to automatic response, setting method is: both ends open the serial debugging assistant, enter ATS0=1 enter at the receiving end of the serial debugging assistant, the instruction of the receiving end can be set to automatically set the MODEM response, success on the MODEM AA indicator light. If it is not set, the setting is not successful. Check that the connection to the computer is correct and whether the MODEM is powered on or not MODEM. The automatic response after successful setting in the transmitter serial debugging assistant input ATD 6515780 (receiving telephone number), the receiving end to enter dialing, this can transfer some information from the sender to the receiver, can also transfer from the receiver to the sending end some information, if the receiving ends of the information are normal, then the communication connection has been established, the MODEM CD indicator light. The above process is normal, it proves that MODEM communication is normal, no problem. After checking that MODEM has no problem, if the communication is still not unblocked, The problem may lie on the control card settings. The MODEM control card and connection, the sender opens the control card software settings, click back settings, check the serial baud rate, serial port, protocol settings are correct, click change after write settings. Open the offline Wang software, set the corresponding communication interface and parameters in the communication mode, and finally send the script. Two 、 software application 1, why is the alignment done with the text in the display window does not match? Answer: if the alignment is inconsistent with the text in the display window, check the text, start, or end of the edit display text box, and delete unnecessary spaces and carriage returns. 2. Why does a display item disappear only when it is displayed? Answer: when a script is previewed or a script is displayed on the screen, a flash is detected. Please check whether the item's residence time is set to 0 or 1, and increase the dwell time value. 3, why is left scrolling text looking like a meal? Answer: display in order to scroll, direction: left text display items, rolling is not smooth, there is a regular pause in the moment, please check the scroll speed of the item, the rolling speed value will be increased. 4, how to clear the contents of multiple windows at the same time? Answer: use screen button. 5, how to make a display item fixed on the screen display, will never disappear? Answer: if you want a display item remains in a fixed position display screen, then adjust the display items should not be set after adjusting the display screen, in the display window should also avoid the window position, lest the cover. 6, how to choose animation files? Answer: when making picture files, you can choose the GIF animation file!