哈哈 廖老师都来参加了，，大家加油啊。不过您那本书我有买，一直没时间看。。

A I 0.0
FP M 5.0
= L 20.0
A L 20.0
JNB _001
L W#16#1
L MD 0
RLD
T MD 0
_001: NOP 0
A L 20.0
A(
L MD 0
L L#0
==D
)
JNB _002
L 1
T MB 3
_002: NOP 0
A L 20.0
A Q 7.7
R M 5.1
A L 20.0
A Q 3.7
S M 5.1
A L 20.0
AN M 5.1
JNB _003
L MB 3
T QB 0
SET
SAVE
CLR
_003: A BR
R Q 7.7
A L 20.0
AN M 5.1
JNB _004
L MB 2
T QB 1
_004: NOP 0
A L 20.0
AN M 5.1
JNB _005
L MB 1
T QB 2
_005: NOP 0
A L 20.0
AN M 5.1
JNB _006
L MB 0
T QB 3
_006: NOP 0
A L 20.0
A M 5.1
JNB _007
L MB 3
T QB 4
SET
SAVE
CLR
_007: A BR
R Q 3.7
A L 20.0
A M 5.1
JNB _008
L MB 2
T QB 5
_008: NOP 0
A L 20.0
A M 5.1
JNB _009
L MB 1
T QB 6
_009: NOP 0
A L 20.0
A M 5.1
JNB _00a
L MB 0
T QB 7
_00a: NOP 0
程序比较简单，可以转成梯形图，一看就明白，组要的思路就是 MB3传到QB0，MB2传到QB1，MB1传到QB2，MB0传到QB3。。。。。方法比较笨，让大家见笑了。