User's Manual

34
Promi-MSP™
Installation Guide ver. 2.0
www.initium.co.kr
4. COM port Redirector
4.1 COM port redirecotr
NOTE:
INITIUM provides VirtualCOM™ cost-free bundled with Promi-MSP™.
Serial/IP™ requires additional cost.
4.1.1 Virtual COM
Serial applications, communicating with devices directly through serial lines, need
to communicate with serial Servers through networks. The HelloDevice
VirtualCOM program enables this necessity.
To support this environment, HelloDevice VirtualCOM must enable virtual COM port
creation, connection of serial application to the virtual COM port, transmission of
data from the serial application to the virtual COM port, transmission to the Serial
Device Server through network and data reception from the Serial Device Server
through network and virtual serial port.
Devices can be connected to the existing serial application with minimal, or no,
application modifications.
If serial application is developed, considering a very short response time-out (e.g.
50ms) when communicating with devices directly through serial lines, the
application should be modified reflecting the transfer time delay in the network
environment (e.g. 500ms). Ethernet does not guarantee data transfer speed,
though it is usually much faster than the serial-line.
Running
HelloDevice VirtualCOM program runs automatically at system start-up.