我用一个FB41和一个FB43控制温度，加热和冷却，可是一仿真cpu的sf灯就亮了，cpu停止工作，请教给位大侠那里错了？
A I 1.2
= L 20.2
BLD 103
A I 1.4
= L 20.5
BLD 103
A I 1.1
= L 20.6
BLD 103
A(
A I 1.1
= L 20.7
BLD 103
A I 1.2
= L 21.0
BLD 103
A I 1.3
= L 21.1
BLD 103
A Q 4.0
JNB _001
CALL "CONT_C" , DB10
COM_RST :=L20.7
MAN_ON :=L21.0
PVPER_ON:=L21.1
P_SEL :=
I_SEL :=
INT_HOLD:=
I_ITL_ON:=
D_SEL :=
CYCLE :=T#1S
SP_INT :=MD100
PV_IN :=
PV_PER :=MW100
MAN :=5.000000e+000
GAIN :=2.000000e+000
TI :=T#10S
TD :=T#10S
TM_LAG :=
DEADB_W :=
LMN_HLM :=1.000000e+002
LMN_LLM :=0.000000e+000
PV_FAC :=
PV_OFF :=
LMN_FAC :=
LMN_OFF :=
I_ITLVAL:=
DISV :=
LMN :=MD200
LMN_PER :=
QLMN_HLM:=
QLMN_LLM:=
LMN_P :=
LMN_I :=
LMN_D :=
PV :=
ER :=
_001: A BR
)
JNB _002
CALL "PULSEGEN" , DB20
INV :=MD200
PER_TM :=T#1S
P_B_TM :=
RATIOFAC:=
STEP3_ON:=
ST2BI_ON:=
MAN_ON :=L20.2
POS_P_ON:=
NEG_P_ON:=
SYN_ON :=L20.5
COM_RST :=L20.6
CYCLE :=T#1S
QPOS_P :=Q4.1
QNEG_P :=Q4.2
_002: NOP 0