Each master, everybody is good! Consult a virtual serial port communication problem,

I use virtual serial port software canhigher era, nc601B virtual serial port server for the company to set up a serial port (nc601B serial port server connected to the amount of a module module 8017 c), and then use jie control configuration software on the computer by serial port server nc601B with cable communication, the purpose is to read 8017 c module of the input signal, found that the problem is: canhigher era of virtual serial port software to establish a serial port state, when open closed state, a second open, concern in time, continuous, don't know what reason is this?
Among them: 1, there are three kinds of serial port server nc601B canhigher era work mode, I can try communication, state the same (serial port server nc601B is newly purchased);
2, jie control configuration software installed 8017 c communication drive,

Please everyone a great god, and to give guidance, thank you!

450939943 is WeChat ID, also can add me, to give guidance, thank you very much!