308 Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
This information applies to the CompactLogix 5370, ControlLogix 5570,
Compact GuardLogix 5370, GuardLogix 5570, Compact GuardLogix 5380,
CompactLogix 5380, CompactLogix 5480, ControlLogix 5580, and GuardLogix
5580 controllers.
The UPDN instruction adds and subtracts two inputs into an accumulated value.
Available Languages
Ladder Diagram
This instruction is not available for ladder diagram diagram.
Function Block
Structured Text
UPDN(UPDN_tag)
Operands
Function Block
Operand Type Format Description
UPDN tag UP_DOWN_ACCUM Structure UPDN structure
(UPDN)
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