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MicroLogix 1200
Allen-Bradley MicroLogix 1200 Reference Manual
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M
icroLogix™
1
200
and M
icroLogi
x
1500
Progr
am
m
able
Co
ntro
lle
rs
(Bul
l
et
ins
1762 and
1764)
In
str
uct
io
n
Set
Refer
ence Manual
2
Table of Contents
Default Chapter
7
Table of Contents
7
Purpose of this Manual
13
Who Should Use this Manual
13
Common Techniques Used in this Manual
14
Rockwell Automation Support
15
Chapter 1 Embedded I/O
17
Micrologix 1200 Expansion I/O
19
Micrologix 1200 Expansion I/O Memory Mapping
20
Micrologix 1500 Compact™ Expansion I/O
23
Micrologix 1500 Compact™ Expansion I/O Memory Mapping
25
I/O Addressing
29
I/O Forcing
30
Input Filtering
30
Latching Inputs
31
Configuring Expansion I/O Using Rslogix 500
34
Chapter 2 Controller Memory
36
Data Files
39
Protecting Data Files During Download
40
Static File Protection
42
Password Protection
43
Clearing the Controller Memory
44
Allow Future Access Setting (OEM Lock)
44
Chapter 3 Overview
46
Real-Time Clock Function File
47
Trim Pot Information Function File
49
Memory Module Information Function File
50
DAT Function File (Micrologix 1500 Only)
53
Base Hardware Information Function File
56
Communications Status File
57
Input/Output Status File
62
Chapter 4 Instruction Set
63
Using the Instruction Descriptions
64
Chapter 5
72
High-Speed Counter (HSC) Function File
72
High-Speed Counter Function File Sub-Elements Summary
74
HSC Function File Sub-Elements
75
HSL - High-Speed Counter Load
96
RAC - Reset Accumulated Value
97
PTO - Pulse Train Output
99
Chapter 6
100
Pulse Train Output Function
100
Pulse Train Outputs (PTO) Function File
104
Pulse Train Output Function File Sub-Elements Summary
105
PWM - Pulse Width Modulation
116
PWM Function
116
Pulse Width Modulation (PWM) Function File
117
Pulse Width Modulated Function File Elements Summary
118
XIC - Examine if Closed XIO - Examine if Open
125
Chapter 7
127
OTE - Output Energize
127
OTL - Output Latch OTU - Output Unlatch
128
ONS - One Shot
129
OSR - One Shot Rising OSF - One Shot Falling
130
Chapter 8
133
Timer Instructions Overview
133
TON - Timer, On-Delay
136
TOF - Timer, Off-Delay
137
RTO - Retentive Timer, On-Delay
138
How Counters Work
139
CTU - Count up CTD - Count down
141
RES - Reset
142
Chapter 9 Using the Compare Instructions
144
EQU - Equal NEQ - Not Equal
145
GRT - Greater than LES - Less than
146
GEQ - Greater than or Equal to LEQ - Less than or Equal to
147
MEQ - Mask Compare for Equal
148
LIM - Limit Test
149
Chapter 10 Using the Math Instructions
152
Updates to Math Status Bits
153
ADD - Add SUB - Subtract
154
MUL - Multiply DIV - Divide
155
NEG - Negate
156
CLR - Clear
156
SCL - Scale
157
SCP - Scale with Parameters
158
SQR - Square Root
159
SWP - Swap
160
Using Decode and Encode Instructions
163
Chapter 11
164
DCD - Decode 4 to 1-Of-16
164
ENC - Encode 1-Of-16 to 4
165
FRD - Convert from Binary Coded Decimal (BCD)
166
TOD - Convert to Binary Coded Decimal (BCD)
170
Chapter 12 Using Logical Instructions
173
Updates to Math Status Bits
174
AND - Bit-Wise and
175
OR - Logical or
176
XOR - Exclusive or
177
NOT - Logical NOT
178
Chapter 13 MOV - Move
179
MVM - Masked Move
181
Chapter 14 COP - Copy File
184
FLL - Fill File
185
BSL - Bit Shift Left
186
BSR - Bit Shift Right
188
FFL - First In, First out (FIFO) Load
190
FFU - First In, First out (FIFO) Unload
193
LFL - Last In, First out (LIFO) Load
196
LFU - Last In, First out (LIFO) Unload
199
Sequencer Instructions
201
Chapter 15 SQC- Sequencer Compare
202
SQO- Sequencer Output
205
SQL - Sequencer Load
208
Chapter 16 JMP - Jump to Label
211
LBL - Label
212
JSR - Jump to Subroutine
212
SBR - Subroutine Label
213
RET - Return from Subroutine
213
SUS - Suspend
214
TND - Temporary End
214
END - Program End
215
MCR - Master Control Reset
215
Chapter 17
219
IOM - Immediate Output with Mask
219
REF- I/O Refresh
220
Chapter 18 Information about Using Interrupts
222
User Interrupt Instructions
227
INT - Interrupt Subroutine
227
STS - Selectable Timed Start
228
UID - User Interrupt Disable
229
UIE - User Interrupt Enable
230
UIF - User Interrupt Flush
231
Using the Selectable Timed Interrupt (STI) Function File
232
Using the Event Input Interrupt (EII) Function File
237
User Program for more Access Information
237
Read Only
237
Chapter 19 The PID Concept
243
The PID Equation
244
PD Data File
244
PID - Proportional Integral Derivative
245
Input Parameters
246
Read/Write
246
Read/Write
247
Read Only
247
Output Parameters
249
Tuning Parameters
250
Read Only
253
Runtime Errors
258
Analog I/O Scaling
259
Application Notes
260
Application Examples
264
Chapter 20 General Information
269
Instruction Types and Operation
270
Protocol Overview
272
String (ST) Data File
273
Control Data File
274
ACL - ASCII Clear Buffers
275
AIC - ASCII Integer to String
276
AWA - ASCII Write with Append
277
AWT - ASCII Write
279
ABL - Test Buffer for Line
282
ACB - Number of Characters in Buffer
283
ACI - String to Integer
284
ACN - String Concatenate
286
AEX - String Extract
287
AHL - ASCII Handshake Lines
288
ARD - ASCII Read Characters
290
ARL - ASCII Read Line
291
ASC - String Search
293
ASR - ASCII String Compare
294
Timing Diagram for ARD, ARL, AWA, and AWT Instructions
296
Using In-Line Indirection
297
ASCII Instruction Error Codes
298
ASCII Character Set
299
ASCII Instructions
269
Chapter 21
303
MSG - Message
303
The Message File
304
Read/Write
305
Local Messages
307
Configuring a Local Message
309
Remote Messages
316
Configuring a Remote Message
318
MSG Instruction Error Codes
321
Timing Diagram for the MSG Instruction
323
SVC - Service Communications
326
MSG Instruction Ladder Logic
328
Local Messaging Examples
329
Chapter 22 Queues and Records
334
Configuring Data Log Queues
338
DLG - Data Log Instruction
340
Data Log Status File
341
Retrieving (Reading) Records
343
Accessing the Retrieval File
343
Conditions that will Erase the Data Retrieval File
345
Programming Instructions Memory Usage and Execution Time
347
Appendix A Micrologix 1200 Scan Time Worksheet
353
Programming Instructions Memory Usage and Execution Time
355
Appendix B Micrologix 1500 Scan Time Worksheet
360
Appendix C Status File Overview
362
Status File Details
363
Identifying Controller Faults
383
Appendix D Contacting Rockwell Automation for Assistance
391
Appendix E Communication Protocol
394
DF1 Full-Duplex Protocol
397
DF1 Half-Duplex Protocol
398
Modbus™ RTU Slave Protocol
401
ASCII Driver
405
Glossary
407
Other manuals for Allen-Bradley MicroLogix 1200
User Manual
162 pages
Installation Instructions
20 pages
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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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