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see a change in the RXD value it indicates that the serial device has returned data.
Active is blue.
6.4 ZLVircom Remotely Monitor Data
In the case of virtual serial port, ZLVircom supports real-time capture of data sent
and received from the virtual serial port. It is convenient for users to debug the
system. The use method is as follows:
It is assumed that the virtual serial port communication has been established
according to the “4.6 Virtual Serial Port Test” method. Now you need to monitor
the data passing through the virtual serial port. Open the ZLVircom
menu/configuration/software configuration/open the vircom configuration dialog
box.
Figure 31 enabling ZLVirocm monitoring
Select the three options of enable monitoring, hexadecimal monitoring mode, and
display the time of send-receive data, as shown in figure 31. Then click ok.
Assuming that data has been sent and received before, now select a virtual serial
port to be monitored in the main interface, and then select the menu/view/monitor,
as shown in figure 32.