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MicroLogix 1200
Allen-Bradley MicroLogix 1200 User Manual
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MicroLogix™ 1200
Programmable
Controllers
Bulletin 1762 Controllers and
Expansion I/O
User Manual
2
Table of Contents
Default Chapter
5
Table of Contents
5
Preface
9
Purpose of this Manual
9
Related Documentation
10
Who Should Use this Manual
9
Common Techniques Used in this Manual
10
Chapter 1
11
Hardware Features
11
Hardware Overview
11
Component Descriptions
12
Micrologix 1200 Memory Module And/Or Real-Time Clock
12
1762 Expansion I/O
13
Communication Cables
14
Programming
14
Firmware Revision History
14
Communication Options
16
Agency Certifications
17
Chapter 2
17
Compliance to European Union Directives
17
EMC Directive
18
Low Voltage Directive
18
Installing Your Controller
17
Installation Considerations
18
Safety Considerations
19
Hazardous Location Considerations
19
Disconnecting Main Power
20
Safety Circuits
20
Power Distribution
21
Periodic Tests of Master Control Relay Circuit
21
Power Considerations
21
Isolation Transformers
21
Power Supply Inrush
22
Loss of Power Source
22
Input States on Power down
23
Other Types of Line Conditions
23
Preventing Excessive Heat
23
Master Control Relay
24
Using Emergency-Stop Switches
25
Schematic (Using IEC Symbols)
26
Schematic (Using ANSI/CSA Symbols)
27
Installing a Memory Module And/Or Real-Time Clock
28
Controller and Expansion I/O Spacing
29
Controller Mounting Dimensions
29
Mounting the Controller
30
DIN Rail Mounting
31
Panel Mounting
32
1762 Expansion I/O Dimensions
33
Mounting 1762 Expansion I/O
33
DIN Rail Mounting
33
Panel Mounting
34
Connecting Expansion I/O
35
Chapter 3 Wiring Requirements
37
Wiring Recommendation
37
Using Surge Suppressors
39
Recommended Surge Suppressors
41
Grounding the Controller
41
Wiring Diagrams
43
Terminal Block Layouts
43
Terminal Groupings
45
Sinking and Sourcing Wiring Diagrams
46
1762-L24AWA, 1762-L24BWA, 1762-L24BXB, 1762-L24AWAR, 1762-L24BWAR and 1762-L24BXBR Wiring Diagrams
47
1762-L40AWA, 1762-L40BWA, 1762-L40BXB , 1762-L40AWAR, 1762-L40BWAR and 1762-L40BXBR Wiring Diagrams
51
Controller I/O Wiring
53
Minimizing Electrical Noise
53
Expansion I/O Wiring
53
Discrete Wiring Diagrams
53
Analog Wiring
58
Supported Communication Protocols
65
Chapter 4
66
Default Communication Configuration
66
Using the Communications Toggle Push Button
66
Connecting to the RS-232 Port
68
Making a DF1 Point-To-Point Connection
69
Using a Modem
69
Isolated Modem Connection
70
Connecting to a DF1 Half-Duplex Network
72
Recommended Tools
73
DH-485 Communication Cable
73
Connecting to a DH-485 Network
73
Connecting the Communication Cable to the DH-485 Connector
74
Grounding and Terminating the DH-485 Network
76
Connecting the AIC
76
Cable Selection Guide
78
Recommended User-Supplied Components
80
Safety Considerations
81
Installing and Attaching the AIC
82
Powering the AIC
82
Devicenet Communications
84
Cable Selection Guide
84
Chapter 5 Trim Pot Operation
85
Trim Pot Information Function File
86
Error Conditions
86
Chapter 6
87
Removal/Insertion under Power
87
Writing Data to the Real-Time Clock
88
RTC Battery Operation
88
Real-Time Clock Operation
87
Memory Module Operation
89
User Program and Data Back-Up
89
Program Compare
90
Data File Download Protection
90
Memory Module Write Protection
90
Removal/Insertion under Power
90
Appendix A
91
Controller Specifications
91
Expansion I/O Specifications
96
Discrete I/O Modules
96
Analog Modules
102
Appendix B Micrologix 1200 Replacement Kits
111
Controller 40-Point Replacement Terminal Blocks
111
1762 Expansion I/O
112
Expansion I/O Replacement Doors
112
Expansion I/O Replacement DIN Latches
112
Expansion I/O Replacement Door Labels
112
Understanding the Controller LED Status
113
Appendix C
114
Normal Operation
114
Error Conditions
114
Controller Error Recovery Model
115
Analog Expansion I/O Diagnostics and Troubleshooting
116
Module Operation and Channel Operation
116
Power-Up Diagnostics
116
Critical and Non-Critical Errors
117
Module Error Definition Table
117
Error Codes
119
Calling Rockwell Automation for Assistance
120
Appendix D Preparing for Upgrade
121
Install Controlflash Software
121
Prepare the Controller for Updating
122
Missing/Corrupt os LED Pattern
122
Sequence of Operation
122
Appendix E
123
Communication Interface
123
DF1 Full-Duplex Protocol
123
DF1 Half-Duplex Protocol
124
Using Modems with Micrologix 1200 Programmable Controllers
125
Communication Protocol
127
Devices that Use the DH-485 Network
127
Important DH-485 Network Planning Considerations
128
Example DH-485 Connections
131
Ascii
134
Modbus Communication Protocol
134
Appendix F System Loading Example Calculations (24-Point Controller
135
System Loading Limitations
135
System Loading Worksheet
137
Current Loading
141
System Loading Worksheet
141
Calculating Heat Dissipation
143
Rockwell Automation Support
162
Installation Assistance
162
New Product Satisfaction Return
162
Other manuals for Allen-Bradley MicroLogix 1200
Reference Manual
424 pages
Installation Instructions
20 pages
5
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Allen-Bradley MicroLogix 1200 Specifications
General
Brand
Allen-Bradley
Model
MicroLogix 1200
Category
Control Unit
Language
English
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