What is your CNC system? I attached file for 840D sl, 

Do you have demo system , I mean Siemens CNC bench free for test, 

AutoGen_497010

Hello members, 

Can any one help me to know how to program FC21 for NC PLC data transfer?  I read manual but could not under stand how to read or write NC instructions.  

Thanks in advance. 

 you need learn by yourself --Google the manual I attached pic. (too large to load here )

read Ch-10 Motion Synchronous Actions

AutoGen_497010

Hello expert, 

Thank you for your reply. 

I checked the sheet you referred but do not understand NCK programming. Page no 2-198 

ID=1 WHENEVER $A_DBB[0] == 0 $A_DBR[4] = $AA_IM[X] $A_DBB[0]  = 1

is it same with FC 21 CALL explained above?

 What do you don't understand? your topic is PLC FC21 , but what ? 

You don't understand "Motion Synchronous Actions" ? or don't understand FC21 or both?

do you have this function in your machine?--Motion Synchronous Actions?

AutoGen_497010

Hello, 

I read the manual, but do not understand,  that is how I opened topic. 

Can any one share example with detail information or post YouTube link of example?

Thanks in advance