使用s7-200CPU226plc，编程实现串口调试助手发送一串字符，查找字符“ON1”和“ON0”，查找到后分别使能Q0.1和Q0.0，同时使能计时器T37，计时器累加6s后，常闭触点断开，使Q0.0或Q0.1断开。程序下载到plc后无法实现定时器的功能，项目催的急，求各位大佬帮忙看看。程序如下：

//Main

Network1

LD     SM0.1

MOVB   16#09, SMB30

MOVB   16#94, SMB87

MOVB   5, SMB89

MOVW   +5, SMW90

MOVB   100, SMB94

ATCH   INT_0:INT0, 23

ATCH   INT_2:INT2, 9

ENI

RCV    VB100, 0

MOVW   +50, SMW92

//INT0

NETWORK1

LDB=   SMB86, 16#04

MOVB   10, SMB34

ATCH   INT_1:INT1, 10

CRETI

NOT

RCV    VB100, 0

//INT1

NETWORK1

LD     SM0.0

LPS

DTCH   10

MOVB   1, AC0

MOVB   1, AC1

SFND   VB100, "ON1", AC0

SFND   VB100, "ON0", AC1

SLEN   VB100, VB200

LDB>=  AC0, 16#1

OB>=   AC1, 16#1

ALD

TON    T37, +60

LPP

XMT    VB200, 0

NETWORK2

LDB>=  AC0, 16#1

A      T37

=      Q0.0

NETWORK3

LDB>=  AC1, 16#1

A      T37

=      Q0.1

//INT2

NETWORK1

LD     SM0.0

RCV    VB100, 0