程序问题4

程序                                     数据类型                  监控初值                 对应关系
L         0                                         int                           0
T     #RET_Ual_receive                     int                           0 
L     #iLADDR                                  int                          160                变频器I地352
L         8
+I                                                                                  168
T     #Startadr                                  word                        168 
L     DBNO                                                                       0
T     #Rett_DB                                  word                          0
LAR2   P##APrec                              Any                          0
L         P##PDB_L2                           pointer                87000080
LAR1                                                                         87000080
L         D[AR1,P#2.0]                                                  84000000

我一直以来都没有搞清楚“L   P##PDB_L2     pointer     87000080”的监控初值等于 “87000080”是什么意义，而“L         D[AR1,P#2.0]    84000000 ”  的监控初值却是 “84000000”，好困惑，希望得到大侠指导，谢谢！

问题补充：