Allen-Bradley LOGIX 5000 User Manual

Chapter 1
Process Control Instructions
28 Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
DISCRETE_3STATE Structure
Input Parameter Data
Type
Description
EnableIn BOOL Enable input. If false, the instruction does not execute and outputs are not
updated.
Default is true.
Prog0Command BOOL Program state 0 command. This input determines the device state when the
device is in Program control. If true, the device is commanded to the 0 state.
Default is false.
Prog1Command BOOL Program state 1 command. This input determines the device state when the
device is in Program control. If true, the device is commanded to the 1 state.
Default is false.
Prog2Command BOOL Program state 2 command. This input determines the device state when the
device is in Program control. If true, the device is commanded to the 2 state.
Default is false.
Oper0Req BOOL Operator state 0 request. Set to true by the operator interface to place the device
into the 0 state when the device is in Operator control.
Default is false.
Oper1Req BOOL Operator state 1 request. Set true by the operator interface to place the device into
the 1 state when the device is in Operator control.
Default is false.
Oper2Req BOOL Operator state 2 request. Set to true by the operator interface to place the device
into the 2 state when the device is in Operator control.
Default is false.
State0Perm BOOL State 0 permissive. Unless in Hand or Override mode, this input must be true for
the device to enter the 0 state. This input has no effect if the device is already in
the 0 state.
Default is true.
State1Perm BOOL State 1 permissive. Unless in Hand or Override mode, this input must be true for
the device to enter the 1 state. This input has no effect if the device is already in
the 1 state.
Default is true.
State2Perm BOOL State 2 permissive. Unless in Hand or Override mode, this input must be true for
the device to enter the 2 state. This input has no effect if the device is already in
the 2 state.
Default is true.
FB0 BOOL The first feedback input available to the instruction.
Default is false.
FB1 BOOL The second feedback input available to the instruction.
Default is false.
FB2 BOOL The third feedback input available to the instruction.
Default is false.
FB3 BOOL The fourth feedback input available to the instruction.
Default is false.
HandFB0 BOOL Hand feedback state 0. This input from a field hand/off/auto station shows the
requested state of the field device. True indicates the field device is being
requested to enter the 0 state; false indicates the field device is being requested to
enter some other state.
Default is false.

Allen-Bradley LOGIX 5000 Specifications

General

Brand	Allen-Bradley
Model	LOGIX 5000
Category	Controller
Language	English