请问欧姆龙的FUN49指令是什么意思

FUN49    (49)    Set System
   

Variations:

Differentiated variant available.

Purpose:

FUN49 is used to control the following 4 operating parameters:
1.    The battery check in system error checks. If FUN49 is executed and bit 00 of OPR1 is ON, the battery check will be excluded from system error checks when PLC power is turned ON.

2.    The initial operating mode. If FUN49 is executed and bit 01 of OPR1 is ON, the PLC will enter MONITOR mode when PLC power is turned ON (see Initial Operating Mode below).

3.    The Force Status Hold Bit (SR 25211). If FUN49 is executed and bit 06 of OPR1 is ON, the Force Status Hold Bit (SR 25211) will be effective when PLC power is turned ON.

4.    The I/O Status Hold Bit (SR 25212). If FUN49 is executed and bit 07 of OPR1 is ON, the I/O Status Hold Bit (SR 25212) will be effective when PLC power is turned ON.

Operand Data Areas:

OPR1    Parameters    # nnnn or 0 (IR0)

OPR2    Online switch    # nnnn or 0 (IR0)

OPR3    Password    # nnnn or 0 (IR0

甈roperty of Omron Corporation 1999-2002  All rights reserved.

设置程序密码的功能指令啊  

设置程序密码的功能指令，前面加一个常开点，编号AR1001

设置程序密码的功能

AR10.01+FUN(49)  PLC 里面的程式不能下载，但可以用别的程式将其覆盖

设置程序密码的功能指令，前面加一个常开点，编号AR1001

设置程序密码的功能,编号AR1001

听人家说好象很容易就破掉了

引用

引用第7楼哈雷于2009-02-17 08:13发表的  :
听人家说好象很容易就破掉了[/quote]
是么？听人家说好象很容易就破掉了。。。既然那样，那就破解个CQM1H的试一试，

CQM1H的好像还破不了，也是用FUN(49}加密的