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Allen-Bradley MicroLogix 1000 User Manual

Allen-Bradley MicroLogix 1000
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T
able of Contents
toc–v
13 Using the Message Instruction 13–1.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Types of Communication 13–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Message Instruction (MSG)
13–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timing Diagram for a Successful MSG Instruction 13–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MSG Instruction Error Codes 13–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Examples that Use the MSG Instruction 13–12. . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting
14 Troubleshooting
Y
our System 14–1.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Understanding the Controller LED Status 14–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Error Recovery Model 14–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifying Controller Faults 14–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calling Allen-Bradley for Assistance
14–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference
A Hardware Reference A–1.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Specifications A–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Dimensions A–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement Parts
A–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B Programming Reference B–1.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Status File B–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instruction Execution T
imes and Memory Usage
B–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C Valid Addressing Modes and File Types for Instruction Parameters C–1.
. . . . . . .
Available File Types C–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A
vailable Addressing Modes
C–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D Understanding the Communication Protocols D–1.
. . . . . . . . . . . . . . . . . . . . . . . . . . .
RS-232 Communication Interface D–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DF1 Full-Duplex Protocol D–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DF1 Half-Duplex Slave Protocol D–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DH-485 Communication Protocol D–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents

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Allen-Bradley MicroLogix 1000 Specifications

General IconGeneral
Communication PortsRS-232
Power Supply24V DC or 120/240V AC
Programming SoftwareRSLogix 500
ManufacturerAllen-Bradley
CategoryController
SeriesMicroLogix
Programming LanguageLadder Logic
Input Voltage24V DC or 120/240V AC
I/O Points10 to 32 points
Processor Type8-bit
Operating Temperature0…55 °C (32…131 °F)
Processor8-bit

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