Rockwell Automation Allen-Bradley 1769-BOOLEAN User manual

Compact
Combination24Vdc
Sink Input/Source
Output BOOLEAN
Control Module
1769-BOOLEAN
Reference Manual

Important User Information
Solid state equipment has operational characteristics differing from those of
electromechanical equipment. Safety Guidelines for the Application,
Installation and Maintenance of Solid State Controls (publication SGI-1.1
available from your local Rockwell Automation sales office or online at
http://literature.rockwellautomation.com) describes some important
differences between solid state equipment and hard-wired electromechanical
devices. Because of this difference, and also because of the wide variety of uses
for solid state equipment, all persons responsible for applying this equipment
must satisfy themselves that each intended application of this equipment is
acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect
or consequential damages resulting from the use or application of this
equipment.
The examples and diagrams in this manual are included solely for illustrative
purposes. Because of the many variables and requirements associated with any
particular installation, Rockwell Automation, Inc. cannot assume responsibility
or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to
use of information, circuits, equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without
written permission of Rockwell Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of
safety considerations.
Allen-Bradley, Compact I/O, MicroLogix 1500, RSLogix 500, CompactLogix, RSLogix 5000, RSNetWorx, and RSLinx are trademarks of
Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
WARNING Identifiesinformationaboutpracticesorcircumstancesthatcancause
an explosion in a hazardous environment, which may lead to personal
injury or death, property damage, or economic loss.
IMPORTANT Identifies information that is critical for successful application and
understanding of the product.
ATTENTION Identifiesinformationaboutpracticesorcircumstancesthatcan
lead to personal injury or death, property damage, or economic
loss. Attentions help you identify a hazard, avoid a hazard, and
recognize the consequence
SHOCK HAZARD
Labelsmaybelocatedonorinsidetheequipment,forexample,adrive
or motor, to alert people that dangerous voltage may be present.
BURN HAZARD Labelsmaybelocatedonorinsidetheequipment,forexample,adrive
or motor, to alert people that surfaces may be dangerous
temperatures.

3Publication 1769-RM016A-EN-P - July 2006
Table of Contents
Important User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Preface
Who Should Use This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
How to Use This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Related Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Conventions Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Chapter 1
Module Operation
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
About the 1769-BOOLEAN Module. . . . . . . . . . . . . . . . . . . . . . . . . . 10
Module Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Boolean Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1769-BOOLEAN Module Block Diagram. . . . . . . . . . . . . . . . . . . . . . 13
Wire the 1769-BOOLEAN Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Input and Output Circuit Diagrams . . . . . . . . . . . . . . . . . . . . . . . . 14
Control Outputs Using Boolean Expressions . . . . . . . . . . . . . . . . . . . 15
Format of Boolean Expression . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Boolean Expression Configuration Restrictions. . . . . . . . . . . . . . . . . . 15
Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Output Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Output Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Output Delay and Duration Operation . . . . . . . . . . . . . . . . . . . . . 18
Boolean Control Mode Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Example 1: Duration > 0, Delay > TRUE Time . . . . . . . . . . . . . . 19
Example 2: Duration > 0, Delay < TRUE Time . . . . . . . . . . . . . . 21
Example 3: Duration > 0, Delay < TRUE Time,
Retriggering Ignored. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Example 4: Duration > 0, Delay = 0, Duration > TRUE Time . . 23
Example 5: Duration > 0, Delay = 0, Duration < TRUE Time . . 24
Example 6: Duration = 0, Delay < TRUE Time . . . . . . . . . . . . . . 25
Example 7: Duration = 0, Delay > TRUE Time . . . . . . . . . . . . . . 26
Chapter 2
Installation and Wiring
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Compliance to European Union Directives . . . . . . . . . . . . . . . . . . . . . 27
EMC Directive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Low Voltage Directive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Hazardous Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . 29
Prevent Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Remove Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

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4
Reduce Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Protect the Circuit Board from Contamination . . . . . . . . . . . . . . . 30
System Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Mount the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Minimum Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Panel Mount. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
DIN Rail Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Replace a Single Module Within a System . . . . . . . . . . . . . . . . . . . . . . 34
Field Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
System Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Label the Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Remove the Finger-safe Terminal Block . . . . . . . . . . . . . . . . . . . . 37
Wire the Finger-safe Terminal Block . . . . . . . . . . . . . . . . . . . . . . . 37
Wire the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Input and Output Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Chapter 3
Module Data, Status, and
Configuration
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Module Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Module Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
1769-BOOLEAN Module Addressing . . . . . . . . . . . . . . . . . . . . . . . . . 42
1769-BOOLEAN Module Input Image. . . . . . . . . . . . . . . . . . . . . 43
1769-BOOLEAN Module Output Image . . . . . . . . . . . . . . . . . . . 43
1769-BOOLEAN Module Configuration File . . . . . . . . . . . . . . . . 43
1769-BOOLEAN Module Input Data File . . . . . . . . . . . . . . . . . . . . . 44
1769-BOOLEAN Module Output Data File . . . . . . . . . . . . . . . . . . . . 44
Direct Control of Module Outputs. . . . . . . . . . . . . . . . . . . . . . . . . 44
Virtual Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
1769-BOOLEAN Module Configuration Data File . . . . . . . . . . . . . . 46
Input Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Input Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Program to Fault Enable (PFE) . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Program State. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Program Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Fault State. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Fault Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Output Control (DB). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Output Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Output Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Output Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

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5
Chapter 4
Module Diagnostics and
Troubleshooting
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Stand Clear of the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Program Alteration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Safety Circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Power Cycle Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Module Error Definition Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Module Error Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Extended Error Information Field . . . . . . . . . . . . . . . . . . . . . . . . . 61
Hardware Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Configuration Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Module Inhibit Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Contacting Rockwell Automation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Appendix A
1769-BOOLEAN Module
Specifications
Temperature Derating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Transistor Output Transient Pulses . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Appendix B
Module Addressing and
Configuration with MicroLogix
1500
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Module Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Input Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Output Image. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Configure the 1769-BOOLEAN Module in a MicroLogix 1500 System
76
Appendix C
Configuration Using the RSLogix
5000 Generic Profile for
CompactLogix Controllers
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Configure the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Configure I/O Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Configure the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Appendix D
Configure Modules in a Remote
DeviceNet System with a
1769-ADN DeviceNet Adapter
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Configuration Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Add the DeviceNet Adapter to the Scanlist . . . . . . . . . . . . . . . . . . . . . 86
Configure the 1769-BOOLEAN Module Example . . . . . . . . . . . . . . . 88
Index
Rockwell Automation Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Installation Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
New Product Satisfaction Return . . . . . . . . . . . . . . . . . . . . . . . . . . 96

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6
Notes:

7Publication 1769-RM016A-EN-P - July 2006
Preface
Read this preface to familiarize yourself with the rest of the manual. This
preface covers the following topics:
•Who should use this manual
•How to use this manual
•Related publications
•Conventions used in this manual
Who Should Use This
Manual
Use this manual if you are responsible for designing, installing, programming,
or troubleshooting control systems that use the Allen-Bradley Compact I/O
system.
How to Use This Manual
As much as possible, we organized this manual to explain, in a task-by-task
manner, how to install, configure, program, operate, and troubleshoot a
control system using the 1769 BOOLEAN module.

Publication 1769-RM016A-EN-P - July 2006
8
Related Documentation
The table below provides a listing of publications that contain important
information about using Compact I/O modules.
If you would like a manual, you can:
•download a free electronic version from the Internet at
http://literature.rockwellautomation.com
•purchase a printed manual by contacting your local distributor or
Rockwell Automation representative.
Conventions Used in This
Manual
We use the following conventions throughout this manual.
•Bulleted lists (like this one) provide information, not procedural steps.
•Numbered lists provide sequential steps or hierarchical information.
•Bold type is used for emphasis.
For Read this document Document number
A user manual containing information on how to install,
use and program your MicroLogix 1500 controller. MicroLogix 1500 User Manual 1764-UM001
A user manual containing information on how to install,
and use your 1769-ADN DeviceNet adapter. DeviceNet Adapter User Manual 1769-UM001
A user manual containing information on how to install,
use and program your 1769-L20 and 1769-L30
CompactLogix controllers.
CompactLogix User Manual 1769-UM007
A user manual containing information on how to install,
use and program your 1769-L31, 1769-L32C, 1769-L32E,
1769-L35CR and 1769-L35E CompactLogix controllers.
CompactLogix System User Manual 1769-UM011
An overview of 1769 Compact I/O modules. Compact I/O System Selection Guide 1769-SG002
In-depth information on grounding and wiring
Allen-Bradley programmable controllers. Allen-Bradley Programmable Controller Grounding and Wiring Guidelines 1770-4.1

9Publication 1769-RM016A-EN-P - July 2006
Chapter 1
Module Operation
Overview
This chapter contains information about the following.
•Module description
•Module block diagram
•Input and output circuit diagrams
•Controlling outputs using Boolean expressions
–Format of Boolean expression
–Allowed variations of Boolean expressions
–Operands
–Operators
–Output delay control
–Output duration control
–Delay/Duration control rules and examples
Topic Page
About the 1769-BOOLEAN Module 1
Module Description 11
Boolean Expressions 12
1769-BOOLEAN Module Block Diagram 13
Wire the 1769-BOOLEAN Module 14
Control Outputs Using Boolean Expressions 15
Boolean Expression Configuration Restrictions 15
Boolean Control Mode Examples 19

Publication 1769-RM016A-EN-P - July 2006
10 Module Operation
About the 1769-BOOLEAN
Module
The 1769-BOOLEAN module is a 24V dc combination input/output module.
The module outputs can be either directly controlled from your program or
independently controlled by the module using configured Boolean
expressions. These Boolean expressions are simple, logical combinations of
the module hardware input states and soft inputs controlled by your program.
When controlled by Boolean expression, the 1769-BOOLEAN module output
states can be conditioned using configured delay and duration settings. The
1769-BOOLEAN module supports interrupts to the system controller on
both input and output change of states(1).
The Compact I/O system is suitable for use in an industrial environment
when installed in accordance with these instructions. Specifically, this
equipment is intended for use in clean, dry environments (Pollution degree
2(2)) and to circuits not exceeding Over Voltage Category II(3) (IEC
60664-1)(4).
(1) Interrupts from the module to the controller may not be supported by all controllers. Refer to your controller's
user manual for more information.
(2) Pollution Degree 2 is an environment where, normally, only nonconductive pollution occurs except that occasionally a
temporary conductivity caused by condensation is expected.
(3) Over Voltage Category II is the load-level section of the electrical distribution system. At this level, transient voltages are
controlled and do not exceed the impulse voltage capability of the product’s insulation.
(4) Pollution Degree 2and Over Voltage Category II are International Electrotechnical Commission (IEC) designations.

Publication 1769-RM016A-EN-P - July 2006
Module Operation 11
Module Description
Hardware Features
The 1769-BOOLEAN module contains a removable terminal block. The
module input circuits are isolated from the output circuits. Single-ground
applications can be supported by wiring the IN DC COM and the OUT DC
COM terminals together; however, this eliminates the isolation between the
input and output circuits provided by the module.
Module configuration is normally done via the controller programming
software. In addition, some controllers support configuration via the user
program. In either case, the controller memory stores the module
configuration. Refer to your controller's user manual for more information.
10a
10b 4
10
2b
3
2a
1
5
a
95
b
6
7a
7b
8b
7b
8a
7a
1769-BOOLEAN
DANGER
Do Not Remove RTB Under Power
Unless Area is Non-Hazardous
Ensure Adjacent
Bus Lever is Unlatched/Latched
Before/After
Removing/Inserting Module
OUT 2
IN 4
IN 7
IN DC
COM
OUT DC
COM
IN 0
IN 2
IN 6
OUT 0 +VDC
OUT 3
N.C.
IN 3
OUT 1
N.C.
IN 1
IN 5
N.C.
IN OUT
0
0246
7531
2
13
BOOLEAN
IN OUT
0
0246
7531
2
13
BOOLEAN
IN OUT
0
0246
7
5
3
1
2
13
Boolean
0
1
2
3
0
1
2
3
4
5
6
7
Item Description
1Bus lever (with locking
function)
2a Upper panel mounting tab
2b Lower panel mounting tab
3Module status LED
4Module door with terminal
identification label
5a Movable bus connector
with female pins
5b Stationary bus connector
with male pins
6Nameplate label
7a Upper
tongue-and-groove slots
7b Lower
tongue-and-groove slots
8a Upper DIN rail latch
8b Lower DIN rail latch
9Write-on label (user ID tag)
10 Removableterminalblock(RTB)
with finger-safe cover
10a RTB upper retaining screw
10b RTB lower retaining screw

Publication 1769-RM016A-EN-P - July 2006
12 Module Operation
Boolean Expressions
An expression is any legal combination of symbols that represents a value. An
expression that results in a value of either TRUE or FALSE is called a Boolean
expression. Every Boolean expression (except a null expression) consists of at
least one operand and can have one or more operators. Operands are values,
whereas operators are symbols that represent particular logical actions. For
example, in the expression
OUT = A AND B,
the value of OUT is either TRUE or FALSE and is determined by the value of
the expression “A AND B”. A and B are operands that also have a value of
TRUE or FALSE. The operator in the expression is the logical operator AND.
Other examples of logical operators are OR and XOR (exclusive-OR).
The 1769-BOOLEAN module outputs can be controlled based upon the
value of Boolean expressions configured by the program. An output state
(when in Boolean control mode) is determined by the state of that output’s
configured Boolean expression, with a value of TRUE corresponding to the
ON state and a value of FALSE corresponding to the OFF state.
Refer to Chapter 3, Module Data, Status, and Configuration on page 41, for
information on configuring control of the 1769-BOOLEAN module outputs
using Boolean expressions.

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Module Operation 13
1769-BOOLEAN Module
Block Diagram
The following figure is the block diagram for the 1769-BOOLEAN module.
1769-BOOLEAN Module Block Diagram

Publication 1769-RM016A-EN-P - July 2006
14 Module Operation
Wire the 1769-BOOLEAN
Module
Each terminal accepts as many as two wires with these restrictions.
Input and Output Circuit Diagrams
The following figures illustrate the simplified input and output circuits.
Simplified Input Circuit Diagram
Simplified Output Circuit Diagram
Wire Type Wire Size Terminal
Screw Torque Retaining Screw Torque
Solid Cu-90 °C (194 °F) 2.08…0.34 mm2
(14…22 AWG) 0.68 Nm (6 lb-in) 0.46 Nm (4.1 lb-in)
Stranded Cu-90 °C (194 °F) 1.31…0.34 mm2
(16…22 AWG) 0.68 Nm (6 lb-in) 0.46 Nm (4.1 lb-in)
+VDC
OUT x
OUT DC COM

Publication 1769-RM016A-EN-P - July 2006
Module Operation 15
Control Outputs Using
Boolean Expressions
You can configure the 1769-BOOLEAN module outputs to be controlled by
Boolean expression (Boolean control mode).
Format of Boolean Expression
Each output is controlled with a separate expression. The fixed format of each
Boolean expression is assumed to be of the form:
Output State = (A xB) yC
where A, B, and C are operands and xand yare logical operators you select.
The location of the parentheses in the fixed format indicates that the logical
operation represented by xis performed on operands A and B first, with the
result of that operation then used as the first operand for the logical operation
represented by y(with C being the second operand).
The parameter names assigned in the 1769-BOOLEAN module configuration
file that correspond to the operands and operators of the fixed format
Boolean expression above are:
A: Operand_A_#
B: Operand_B_#
C: Operand_C_#
x: Operator_1_#
y: Operator_2_#
where the # symbol indicates the module output (OUT0 through OUT3).
Boolean Expression
Configuration Restrictions
The Boolean expressions controlling the output states have default values
assigned to each operand and operator. These default values assign “None” to
each operand and operator resulting in a “Null” expression. A “Null”
expression will be accepted by the module but will result in an output that will
always be in the OFF state.
The module will only accept the following variations of Boolean expressions
as valid (based on the fixed format expression (A x B) y C).

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Variations of Boolean Expressions
Operands
The operands in each output's Boolean expression can be configured to be
one of the following.
•None (default)
•Current state of one of the module's eight, real inputs
•Inverted, current state of one of the module's eight, real inputs
•Current state of one of the module's eight, virtual inputs (controlled by
the user program via the module's output data file)
•Inverted, current state of one of the module's eight, virtual inputs
Refer to Chapter 3, Module Data, Status, and Configuration on page 41, for
details on configuring the Boolean expression operands.
Operators
The operators in each output Boolean expression can be configured to be one
of the following (the operator's effect on a pair of operands is described).
Boolean Expression and the Related Operator Effect
Refer to Chapter 3, Module Data, Status, and Configuration on page 41, for
details on configuring the Boolean expression operators.
Variation Description
Null All operands and operators assigned a value of “None”.
A Onlythefirstoperandassignedanon-defaultvalue,allother
operands and all operators assigned a value of “None”.
A xB Onlythe first twooperandsand the firstoperatorassigneda
non-defaultvalue,final operand and final operator assigned
a value of “None”
(A x B) y C All operands and operators assigned non-default values)
Expression Operator Effect
None Default, no logical operation performed.
OR If either operand in TRUE, the result is TRUE.
AND Both operands must be TRUE for the result to be TRUE.
XOR Exclusive - OR, one operand must be TRUE and the other
FALSE for the result to be TRUE.

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Output Delay
When configured for Boolean control, the module's outputs are directed ON
when the Boolean expression for each output channel is TRUE. The module
can be configured to add a delay between an output's Boolean expression
becoming TRUE and the output being placed into the ON state. The length of
this delay time for an output operating in Boolean control mode can be
configured to be between 0 (default) and 1 second in 1 ms increments.
Refer to Chapter 3, Module Data, Status, and Configuration on page 41, for
details on configuring the Boolean expression output delay.
Output Duration
When configured for Boolean control, if an output is directed ON as the result
of the output's Boolean expression becoming TRUE, and the Output Delay
time for that output has been satisfied, then the length of time an output stays
ON can be controlled by designating an Output Duration. The length of this
duration time for an output operating in Boolean control mode can be
configured to be either a fixed amount of time between 1 ms and 1 second (in
1 ms increments), or, the output can be configured to remain ON only as long
as its Boolean expression remains TRUE (duration time set to 0, this is the
default setting).
Refer to Chapter 3, Module Data, Status, and Configuration on page 41, for
details on configuring the Boolean expression output duration.

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18 Module Operation
Output Delay and Duration Operation
Since an output's Boolean expression can change in real time, configuring a
delay and/or duration time when an output is in Boolean control mode could
cause confusion.
The module shall operate in the following manner when output delay and/or
duration times are configured to non-default values (while an output is
configured for Boolean control).
When the Boolean expression controlling an output transitions from FALSE
to TRUE, the output will be directed ON after the delay time has expired only
if:
Case 1
•The output's duration time is not equal to 0. In this case the output
should be directed ON for the length of the duration time regardless of
the state of the output's Boolean expression and then should be directed
OFF regardless of the state of the Boolean expression.
•In Case 1 a “One-shot” type of function has been configured. The
output will be turned ON with a single pulse of configured delay time
and duration time when the output's Boolean expression becomes
TRUE. The length of time the Boolean expression remains TRUE does
not determine whether the “One-shot” pulse occurs. As long as the
duration time of the output has been configured to a value greater than
0, then a “One-shot” ON pulse will occur and the output will remain
ON for the length of the duration time. The output will then turn OFF
regardless of the state of the output's Boolean expression.
•Retriggering of the output is not supported. Any additional transitions
of the output's Boolean expression from FALSE to TRUE after the
initial transition to TRUE are ignored for a length of time equal to the
configured delay time added to the configured duration time. Once the
output's “One-shot” pulse duration is complete, and the output is
turned OFF, a FALSE to TRUE transition of the Boolean expression
will cause another “One-shot” ON pulse to occur.
Case 2
•The output's duration is equal to 0 and the output's Boolean expression
has maintained a state of TRUE for the entire delay time. The output
should then be directed OFF when the output's Boolean expression
becomes FALSE.

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Module Operation 19
•In Case 2 the output will follow the state of the Boolean expression as
long as the configured delay time has expired and the Boolean
expression has maintained a TRUE state. When an output's Boolean
expression transitions from FALSE to TRUE, the output will be turned
ON only if the Boolean expression has maintained a state of TRUE for
the entire length of the delay time. If the output's Boolean expression
transitions to FALSE before the configured delay time expires, then the
delay time should be terminated and the output should not be turned
ON. If the output's Boolean expression has maintained a TRUE state
for the full length of the delay time, the output will be turned ON and
will remain ON until the Boolean expression becomes FALSE.
•If an output's Boolean expression is configured with both the delay and
duration times set to 0, then the output simply follows the state of the
Boolean expression, ON when the expression is TRUE and OFF when
it is FALSE.
Boolean Control Mode
Examples
The following examples illustrate the module's operation when an output is
configured in Boolean control mode. Examples 1…5 show module output
operation for Case 1 where the configured duration time is greater than 0.
Examples 6 and 7 show module operation for Case 2 where the configured
duration time is equal to 0.
Example 1: Duration > 0, Delay > TRUE Time
In this example, the output is configured with a duration time greater than 0, a
delay time greater than 0, and the configured delay time is longer than the time
that the Boolean expression remains TRUE.
Since the configured duration time is greater than 0, a “One-shot” pulse
occurs on the output. The pulse starts an amount of time after the FALSE to
TRUE transition of the Boolean expression equal to the configured delay time.
The “One-shot” pulse lasts as long as the configured duration time even
though the Boolean expression transitions to FALSE. The second “One-shot”
pulse occurs on the output since there was a FALSE to TRUE transition in the
Boolean expression after the first “One-shot” pulse is completed.

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20 Module Operation