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Allen-Bradley CompactLogix 5380 User Manual

Allen-Bradley CompactLogix 5380
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6 Rockwell Automation Publication 1756-RM100F-EN-P - October 2018
Table of Contents
Data Alignment and Memory Allocation Rules for
User-defined Data Types (UDTs) That Contain LINTs. . . . . 120
Instruction Error and Fault Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Subscript Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
TRN Operator and Math Status Flags. . . . . . . . . . . . . . . . . . . . . . 124
Math Status Flags are Valid Only in One Rung. . . . . . . . . . . . . . 125
AVE and STD Instruction Accuracy . . . . . . . . . . . . . . . . . . . . . . . 126
BTD, FAL, FSC, and CMP No Longer Generate
Math Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Math Status Flags Not Permitted in Structured Text . . . . . . . . 127
Minor Fault on Overflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Manually Set Math Overflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
TOD Instruction Flags and Math Status Flags . . . . . . . . . . . . . . 130
Add-On Instructions Do Not Propagate Math Status Flags . . 130
Subroutines Do Not Affect Math Status Flags . . . . . . . . . . . . . . 131
Carry Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Store NAN in an Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Compare NAN Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Operand Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Converting +/- Infinity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Copy/File Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
COP and CPS Into Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
JSR and RET Parameters Passing Into Structures. . . . . . . . . . . . 136
JSR passing Atomic Data type into an Array or Structure . . . . 137
Instructions That Operate On Arrays . . . . . . . . . . . . . . . . . . . . . . 139
GSV/SSV Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
MCT/MCTP Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Chapter 7
Diagnostics and Status Indicators
with ControlLogix Systems
Controller Status Display and Indicators . . . . . . . . . . . . . . . . . . . . . . . 141
4-Character Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Status Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Ethernet Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Controller Web Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Home Web Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Tasks Web Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Diagnostics Web Pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Advanced Diagnostics Web Pages. . . . . . . . . . . . . . . . . . . . . . . . . . 146
Browse Chassis Web Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

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Allen-Bradley CompactLogix 5380 Specifications

General IconGeneral
BrandAllen-Bradley
ModelCompactLogix 5380
CategoryController
LanguageEnglish

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