How to Read the Values from Serial Port

I am getting values from Serial port from my project, like V225I005# ie. voltage=225 V and I = 5A. I would like to import this serial port value to RCM4400W. Please help for program coding. After I planned to design the Webpage in RCM4400W and monitor the values.

Please Help

Thanking you,

with regards,
S.Vaidyanathan