douyi Posted August 3, 2005 Report Posted August 3, 2005 What is OB2 - OB9 ? Can I use them? How ? by the way, I can only find s5time, how can I use IEC timer? - in LAD ? Thanks in advance. Quote
RMA Posted August 5, 2005 Report Posted August 5, 2005 (edited) Unless they exist in 400 series CPUs, which I've never used, OB2 - OB9 don't exist, not on my copy of Step7 V5.3, anyway. You'll find the IEC Timers in the Standard Library. You can access this from the Simatic manger via: File -> Open then Libraries -> Standard Library For reasons best know to Siemens, the Timers are not in the IEC Functions sub-directory, but in System Function Blocks! SFB3 - SFB5 are what you're looking for. You can use them directly in LAD OK. Edited August 5, 2005 by RMA Quote
douyi Posted August 8, 2005 Author Report Posted August 8, 2005 Actually, what I did is insert a new object as an "Organization Block", and type in OB2 in the pop-up dialog and Simatic Manager generated it, I can open it, do whatever I want to do with it, but I don't know how the processor will do with that and I can't find any help from manuals or help files. As a professional, maybe you guys know that. Thanks. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.