Hello
After modifying (DEC POS) The RX does not work
I can send data to the rx ac motors not working.
So the servant move
I used (Servo gosub)
The servant problem has already works better
Thank you all.

serin2 RX_inp,16468,500,PAR,[wait("PC"),RX,DEC POS]

IF RX = "A" THEN FRE
IF RX = "B" THEN TRA
IF RX = "C" THEN ESQ
IF RX = "D" THEN DIr
GOSUB SERVO
GOTO PROG

SERVO:
servo1 = 1
PAUSEUS 1000 + pos
servo1 = 0
Pause 16
RETURN