840D系统配置装载软件是CPU停机，不知如何处理。诊断信息如下：
Area length error when writing
Global DB, double-word access, Access address: 74
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
04:11:46.459 PM 09/24/2014
Event 3 of 10: Event ID 16# 2523
Area length error when writing
Global DB, double-word access, Access address: 68
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
04:11:46.458 PM 09/24/2014
Event 4 of 10: Event ID 16# 2523
Area length error when writing
Global DB, double-word access, Access address: 64
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
04:11:46.458 PM 09/24/2014
Event 5 of 10: Event ID 16# 2523
Area length error when writing
Global DB, double-word access, Access address: 60
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
04:11:46.457 PM 09/24/2014
Event 6 of 10: Event ID 16# 2522
Area length error when reading
Global DB, double-word access, Access address: 28
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
04:11:46.457 PM 09/24/2014
Event 7 of 10: Event ID 16# 2522
Area length error when reading
Global DB, double-word access, Access address: 24
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
04:11:46.456 PM 09/24/2014
Event 8 of 10: Event ID 16# 2522
Area length error when reading
Global DB, word access, Access address: 22
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
04:11:46.456 PM 09/24/2014
Event 9 of 10: Event ID 16# 2522
Area length error when reading
Global DB, word access, Access address: 20
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
04:11:46.455 PM 09/24/2014
Event 10 of 10: Event ID 16# 2522
Area length error when reading
Global DB, double-word access, Access address: 16
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
04:11:46.455 PM 09/24/2014
最佳答案
诊断缓冲区给出的10条信息，都是OB121引起的内部错误，所以你需要新建一个空的OB121，然后再下载到PLC里边，这些信息就没有了。
如有新的问题，再看诊断缓冲区，没有的话，应该就可以运行了，不是致命错误。
提问者对于答案的评价：
后来又重新下装了toolbox，断电重送后错误消失了
原创文章，作者：more0621，如若转载，请注明出处：https://www.zhaoplc.com/plc182886.html
微信扫一扫 
支付宝扫一扫 