SET
= "DP".MS1.ACTIVE

ANF1: CALL "GLOBAL_DP_DIAG"
CHECK_ACTIV :="DP".MS1.ACTIVE
EXTERNAL_DP_INTERFACE :=FALSE
DP_MASTERSYSTEM :=1
DATA_FIELD :="DP".MS1.DATA_FIELD
SUM_SLAVES_DIAG :="DP".MS1.SUM_SLAVES_DIAG
LIST_SLAVES_NOT_PRESENT:="DP".MS1.SLAVE_NOT_PRESENT
LIST_SLAVES_ERROR :="DP".MS1.SLAVE_ERROR
RETVAL :="DP".MS1.RETVAL
BUSY :="DP".MS1.BUSY

AN "DP".MS1.BUSY
AN "DP".MS1.ACTIVE
JC MS2

AN "DP".MS1.BUSY
R "DP".MS1.ACTIVE

JU ANF1
------------------------------------------------
还有就是用s7-400带et200l 硬件组态编译后出来个fb49(锁住的) ,叙述如下:

Diagnostic block for Report System Error

Report System Error Diagnostic Block
This FB contains the generated code of STEP 7 Report System Error.
It is called up in the error OBs as well as in OB1 or in a time OB.
The FB evaluates the system errors and displays them by means of an Alarm_S
to the display device.
While the FB executes, all interrupts are delayed
请问这是怎么回事,是自动生成的吗?还是我用的程序中的作者自己做的fb 后加密的.