S7-317PLC SF灯亮.硬件诊断如下:
Event 1 of 10: Event ID 16# 2523
Area length error when writing
Instance DB, bit access, Access address: 62
Requested OB: Programming error OB (OB121)
Priority class: 1
Internal error, Incoming event
04:39:58.072 PM 11/24/2010
这到底是什么意思?要怎么解决,目前PLC正常工作,只是SF灯亮.