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Allen-Bradley LOGIX 5000

Allen-Bradley LOGIX 5000
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Process Control Instructions
Chapter 1
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018 49
Hand Mode or Override Mode
The following table describes how the D2SD instruction determines whether to
operate in Hand or Override mode.
ProgHandReq ProgOverrideReq
FaultAlarm and
OverrideOnFault Description
true either either Hand mode
Hand is set to true
Override is cleared to false
false true either Override mode
Hand is cleared to false
Override is set to true
false either true Override mode
Hand is cleared to false
Override is set to true
When the instruction is in Override mode, CommandStatus = OverrideState.
When the instruction is in Hand mode, CommandStatus = HandFB.
Output State
The D2SD output state is based on the state of the command status.
CommandStatus Output State
false If OutReverse is false, Out is cleared to false
If OutReverse is true, Out is set to true
true If OutReverse is false, Out is set to rue
If OutReverse is true, Out is cleared to false
false and
FB0 = FB0State0 and
FB1 = FB1State0
The fault timer is stopped and cleared to 0
Device0State is set to true
true and
FB0 = FB0State1 and
FB1 = FB1State1
The fault timer is stopped and cleared to 0
Device1State is set to true

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