When the hardware serial port is used with DEFINEs you can not use SERIN2 commands on the same pins. If you do not DEFINE then you can but I do not see where this would be much of an advantage for you.

So in the Temp routine in the RX code get rid of the HSERIN for starters.
Then in the SERIN2 command you may want to wait for something other than a blank space. Send a Z or something and wait for that.

This is the part I am talking about

*
Code:
* hserin 2000,main,[dta1(0),dta1(1)]
* * serout2 portb.2, 16468,[dta1(0), dta1(1)]
* * LCDOUT $FE,1,"STATUS: ",DTA1(0),DTA1(1):pause 2000* 
* * serin2 portc.7,84,[wait(" "),dta(0),DTA(1),DTA(2),DTA(3),DTA(4),DTA(5),DTA(6),DTA(7),DTA(8),dta(9),dta(10),dta(11),dta(12),DTA(13),DTA(14),DTA(15)]