各位大侠好：我遇到这样一个问题CP341做从站RTU模式，我在FC5中调用的FB80并为其分配了背景数据块，现在遇到的问题是，只要在OB1中调用FC5下载到CPU中就会提示如下错误信息：Diagnostic buffer of module CPU 417-4 H

Order No./ Des cription Component Version
6ES7 417-4HT14-0AB0 Hardware 1
- - - Firmware V 4.5.3
Boot Loader Firmware expansion V 4.5.1

Rack: 0
Slot: 3


Serial number: SVPAN304833


Event 1 of 44: Event ID 16# 2522
Area length error when reading
Instance DB, word access, Access address: 612
FB number: 80
Module address: 76
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
03:49:14.814 AM 06/08/2012


Event 2 of 44: Event ID 16# 2522
Area length error when reading
Instance DB, word access, Access address: 610
FB number: 80
Module address: 68
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
03:49:14.814 AM 06/08/2012


Event 3 of 44: Event ID 16# 2522
Area length error when reading
Instance DB, bit access, Access address: 608
FB number: 80
Module address: 60
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
03:49:14.813 AM 06/08/2012

此外我也是调用了FB7和FB8了，到底是什么原因呢请各位帮忙分析下；

能具体的说下CP341组态的步骤么？我现在只用功能码fc03，我可以用MOVE指令将所有IO点MOVE过去吧