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ladder logic

   Also found in: Wikipedia 0.01 sec.

ladder logic

See IEC 61131.


(programming)ladder logic - Source code formatted in two columns with conditions on the left that lead to outputs on the right:

if (c1) s1 else if (c2) s2 else if (c3) s3 ...


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In a traditional machine control system with a PLC, data is processed sequentially with ladder logic, which imposes delays.
This controller also supports 48 KB of user ladder logic programming and 32 KB of data registers.
Using industrial PXI chassis and LabVIEW Real-Time controllers, researchers replaced the existing 200 I/O-point PLC controller - along with 2,000 lines of antiquated PLC ladder logic - to create a more efficient, rugged and easily upgradeable system that reduces system setup time and increases reliability.
 
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