s7-226 temp alarm

I have S7-226 system that I would like to write an alarm output if my temp. is too low. The module is an EM231 t/c module on A Channel. The temp is normally about 350 deg F and I need to alarm if drops under 200 deg F.
The temp is also displayed on a panel.

OK, I have solved it.
LD SM0.0
BMW AIW0, VW1210, 4

LDW>= VW1210, +3990
= Q 0.7

LDW<= VW1210, +2000
= Q0.6