我有一段程序如下:
0 LD X000
1 MPS
2 LDI X001
3 AND X002
4 LD X002
5 ANI X003
6 ORB
7 ANB
8 ANI X003
9 AND X004
10 OUT Y001
11 MRD
12 AND X001
13 OUT Y002
14 MPS
15 AND X004
16 ANI X005
17 OUT Y003
18 MPP
19 AND X006
20 OUT Y004
21 MPP
22 LD X007
23 OR X002
24 ANB
25 ANI X010
26 OUT Y005
27 END
请问第14条指令MPS是啥意思?能帮我画出梯形图吗?谢谢!