Hello, the two LED screens of the site access control are no problem through the LED screen debugging software test, after setting the FCARD3500T access control software bulletin screen and setting the LED screen parameters, why the software shows that the communication card is offline? How should it be solved?

Hello, please open the FCARD3500T one card pass management software to check whether the communication card IP in it is consistent with the IP read out in the debugging software, and please check whether the control card address in the debugging software is 0, if it is not 0, please change it to 0. If you still cannot solve your problem, please check the advanced settings in the debugging software to check whether the selected parameter settings are correct.