我有这样一个程序，第一次定时器运行正常，第二次就不正常了不知是什么原因，请各位指教!
network1
LD i0.0
AN i0.1
AN i0.2
AN i0.3
AN m0.0
AN m0.1
AN m0.2
AN m0.3
TON t33, +20
network2
LD t33
AN i0.1
AN i0.2
AN i0.3
AN m0.0
AN M0.1
AN M0.2
AN M0.3
S Q0.2
S M0.0
TON T110, +170
NETWORK3
LD M0.0
A T110
R Q0.2, 1
TON T111, +40
NETWORK4
LD M0.0
A T111
R T33, 1
R M0.0, 1
R T110, 1
R T111, 1
NETWORK5
LD I0.1
AN I0.0
AN I0.2
AN I0.3
AN M0.0
AN M0.1
AN M0.2
AN M0.3
TON T34, +20
NETWORK5
LD T34
AN I0.0
AN I0.2
AN I0.3
AN M0.0
AN M0.1
AN M0.2
AN M0.3
S Q0.3, 1
S M0.1, 1
TON T110, +170
NETWORK6
LD M0.1
A T110
R Q0.3, 1
TON T11, =40
network7

LD m0.1
A t111
R t34, 1
R m0.1, 1
R t110, 1
R t111, 1