Thư viện tri thức trực tuyến
Kho tài liệu với 50,000+ tài liệu học thuật
© 2023 Siêu thị PDF - Kho tài liệu học thuật hàng đầu Việt Nam
Tài liệu đang bị lỗi
File tài liệu này hiện đang bị hỏng, chúng tôi đang cố gắng khắc phục.
plc s7-300 vietnam pro1_12e_obs
Nội dung xem thử
Mô tả chi tiết
SITRAIN Training for
Automation and Drives
ST-7PRO1
Page 1 Organization Blocks
Contents Page
Objectives ......................................................................................................................................... 2
Overview of the Organization Blocks ….......................................................................................... 3
Startup OBs ..................................................................................................................................... 4
Interrupting the Cyclic Program ………........................................................................................... 5
Time-of-Day Interrupt (OB10) .......................................................................................................... 6
Cyclic Interrupt (OB35) ...................................................................................................................... 7
Hardware Interrupt (OB40) .............................................................................................................. 8
Time-Delay Interrupt (OB20) ............................................................................................................ 9
The Diagnostic Interrupt and Asynchronous Error Interrupt (OB81 to OB87) .................................. 10
Asynchronous Error OBs .................................................................................................................. 11
Synchronous Errors .......................................................................................................................... 12
System Functions for Controlling Interrupt OBs ............................................................................... 13
OB Start Information ….................................................................................................................... 14
Exercise: Displaying the Startup Type (OB100) .............................................................................. 15
Exercise: Response to a Synchronous Error ................................................................................... 16
Date: 25.07.2008
File: PRO1_12E.1
SIMATIC® S7
Siemens AG 2003. All rights reserved.
SITRAIN Training for
Automation and Drives
Organization Blocks
Operating
system
OB1
FC
FB
SFC
SFB
Other
OBs
FC
FB