SEROUT command (single byte value not string)

[ScaleRobotics]

Are you using PicBasic, or PicBasic Pro?

Here is the example from the PBP manual:

SEROUT

0,N2400,[#B0,10] ‘ Send the ASCII value of B0 followed by a linefeed out Pin0 serially

So, from that, you could try:

SEROUT 7, T9600,[15]

or if using PicBasic, your
SEROUT 7, T9600,(15)
should work