Event 1 of 120:  Event ID 16# 2943

I/O access error, writing

P area, word access, Access address:    274

FB number:      7

Module address:    212

Requested OB: I/O access error OB (OB122)

Priority class:  1

External error, Incoming event

09:00:52.659 PM  08/25/2017

(Coding: 16# 2943  017A  8E20  0112  0007  00D4)

上面信心中最不明白的是：

P area, word access, Access address:    274

Module address:    212

Help me！