我想用OB86诊断Profinet网络，现在有这么几个问题请教
我在帮助里看到当OB86_EV_CLASS为B#16#39，OB86_FLT_ID为B#16#CA时
OB86_MDL_ADDR: logical base address of the IO controller
OB86_Z23:- Bits 0 to 10: 0 (station number)
Bits 11 to 14: IO system ID
Bit 15: 1
Bits 16 to 31: 0
（或OB86_EV_CLASS为B#16#39/38，OB86_FLT_ID为B#16#CB）时：
OB86_RESERVED_1: B#16#C4
OB86_MDL_ADDR: logical base address of the IO controller
OB86_Z23: Bit 0 to 10: Station nummer
Bit 11 to 14: IO system ID
Bit 15: 1 Bit 16 to 30: logical base address of the station
Bit 31: I/O identifier

现在问题为：logical base address of the IO controller是不是指CPU的地址（设备号）？
station number是不是就是网关的设备号？
IO system ID那又是指什么呢