和老外通过DP/DP coupler通讯，DP/DP coupler组态I/O是32 Bytes output consistent和 64 Bytes input consistent.地址范围是PQB 272-303/PIB 368-431.我在编程中使用的BOOL量Q272.1 和DWORD量 PQD PID。程序无法下载到PLC中，显示unable to copy block FC 1。CPU诊断为
Event 1 of 10: Event ID 16# 6539
Illegal command in block (detected by compiler)
FC number: 1
Module address: 0
Operating mode: RUN
Internal error, Incoming event
12:54:19.499 AM 01/18/1994
请教高手是哪里的问题？？