Allen-Bradley LOGIX 5000 Reference Manual page 49

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