Is incircuit programming possible in RCM4000?

Please explain exactly what you are trying to do. You can program the RCM4000 via the programming port (serial port ) using Dynamic C or the Rabbit Field Utility, or through the Remote Program Update (RPU)

Ma’m,I used to program RCM4000 by programming cable and dynamic C.Is there any other way to program this processor?If so,how can it be done?

After initially using Dynamic C , you can use the RPU:
http://ftp1.digi.com/support/documentation/022-0144_C.pdf