红绿灯程序(西门子)

ld   i0.0
s   m0.0,1
ld  i0.1
r m0.0,1
r q0.0,8
ld m0.0
lps
aw
= q0.0
lpp
an t37
ton t37,+480
ld m0.0
aw>= t37,200
aw
a sm0.5
= q0.1
ld m0.0
aw>= t37,240
aw
= q0.2
ld m0.0
aw>= t37,240
aw
=  q0.3
ld m0.0
aw>= t37,440
aw
a sm0.5
= q0.4
ld m0.0
aw
= q0.5
该程序绿灯各亮20秒,黄灯闪4秒一个循环时间为48秒
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原文地址： Http://blog.gkong.com/more.asp?id=103289&Name=zwk34