发表于:2005-11-05 07:57:00
楼主
1、DB块中数据更改不了,显示:By default,instance data blocks are opened with "Parameter assignment for data blocks" as of STEP 7 V5.2(see help)There is no functional difference for this DB to the editor in LAD/STL/FBD.The DB could be opened with the DB editor in LAD/STL/FBD (as in V5.1)。怎样才能更改呢?我用的是V5.3.
2、DB块中的 Interface下的Temp是什么东西?
3、以下的程序是什么意思呢?
OB82: "I/O Point Fault"
Network1: Progress STOP CYCLE
A "always on"
="ALARMS mem 35"
4、FB、FC中是受保护的,怎样才能去掉保护呢?
5、FB、FC要调用数据块DB,怎样调用?我看说明,看不懂啊!