The B883-201 RTD Module is Traffic Copped as 3 Input Registers and 3 Output Registers. The module needs to have a configuration downloaded each time the plc is powered up. Once the configuration is downloaded successfully you then need to multiplex the RTD's through the Input registers to sample the values.
Quite a bit of programming is involved and if you like I will attach some sample code. We have used these modules quite successfully and I can create a zip file of the plc code if you let me know the version of Prowox you are using.
Regards,
Kevin