Toggle Bit - S7

From ControlWiki

(Difference between revisions)
Jump to: navigation, search
Line 3: Line 3:
| author_name=Helge Slettvoll
| author_name=Helge Slettvoll
| program_filename=HSLE_FB108.pdf
| program_filename=HSLE_FB108.pdf
-
| abstract=Function Block with three input bits: Toggle, Set and Reset. Status output bit changes status accordingly.
+
| abstract=Function Block with three input bits: Toggle, Set and Reset. Status output bit changes accordingly - from 0 to 1 or from 1 to 0 on rising edge on Toggle input.  
 +
Set and Reset input overrides Toggle input.
 +
If Set and Reset are both 1, then Status is 0 (Reset dominant)
Helper bits are kept in instance data blocks, thus reducing the risk of typical copy/paste errors and simplifying memory allocation.
Helper bits are kept in instance data blocks, thus reducing the risk of typical copy/paste errors and simplifying memory allocation.
[[File:FB108DB171.jpg]]
[[File:FB108DB171.jpg]]
}}
}}

Revision as of 08:34, 17 August 2010


S7 Function Block Toggle with Set/Reset override.

contributed by: Helge Slettvoll

Link to File

Click here to view program file.

Abstract

Function Block with three input bits: Toggle, Set and Reset. Status output bit changes accordingly - from 0 to 1 or from 1 to 0 on rising edge on Toggle input. Set and Reset input overrides Toggle input. If Set and Reset are both 1, then Status is 0 (Reset dominant) Helper bits are kept in instance data blocks, thus reducing the risk of typical copy/paste errors and simplifying memory allocation.

File:FB108DB171.jpg

Disclaimer

For all material in the PLC Archive, our site disclaimer applies. You take full responsibility for the application of any code appearing on this site, as we have made no engineering evaluation of the code nor are we, or the author, familiar with the details and risks inherent in your application.

Personal tools