ICP DAS USA 8430 Manual De Usuario

 

VxComm (“Virtual Communication Port”) is a technique that allows access to remote I/O 
slots or RS-232 ports. There are two types of software interfaces that can be used to 
access remote I/O modules and the COM ports of the 7188E/8000E series the first is serial 
port interface and the second is the TCP/IP interface. For the serial port interface, we 
provide a VxComm driver for Windows OS. It is used to create virtual COM ports to map to 
I/O modules and COM ports of the 7188E and 8000E. After creating virtual COM ports, you 
can easily upgrade serial devices to with Ethernet communication ability and the original 
software only need to link to a virtual COM port. It doesn’t need any source code 
modification. 

 

Comparison of using Virtual COM Port and TCP Port    to develop Ethernet application. 
 
 

 Use 

Virtual COM Port interface 

Use TCP Port interface 

Programming 
method 

Program has to Send and 
Receive command via COM Port

Program has to Send and 
receive command via TCP Port

Extra Driver 

Need to install VxComm driver on 
PC 

No 

Platform   

Windows 98 /NT /2000 /XP 

All platforms 

SDK provided 

DLL,  ActiveX, LabView bundle 
driver, InduSoft bundle driver, 
OPC driver 

No ,program has to use DCON 
Protocol directly to 
communicate with I/O modlues 

8430/8830/8KE4/8KE8 User’s manual, Jan 2005, Version 1.0, 8MS-002-10    -----    81