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Publication 1762-RM001C-EN-P

Communications Instructions 21-9

Configuring a Local

Message

Message Setup Screen

The rung below shows a MSG instruction preceded by conditional logic.

Access the message setup screen by double-clicking Setup Screen.

The RSLogix Message Setup Screen is shown below. This screen is used to

setup “This Controller”, “Target Device”, and “Control Bits”. Descriptions

of each of the elements follow.

0000

B3:0

MSG

Read/Write Message

MSG File MG11:0

Setup Screen

MSG

Default Chapter7
- Table of Contents7
- Purpose of this Manual13
Who Should Use this Manual13
- Common Techniques Used in this Manual14
- Rockwell Automation Support15
Chapter 1 Embedded I/O17
- Micrologix 1200 Expansion I/O19
- Micrologix 1200 Expansion I/O Memory Mapping20
- Micrologix 1500 Compact™ Expansion I/O23
- Micrologix 1500 Compact™ Expansion I/O Memory Mapping25
- I/O Addressing29
- I/O Forcing30
- Input Filtering30
- Latching Inputs31
- Configuring Expansion I/O Using Rslogix 50034
Chapter 2 Controller Memory36
- Data Files39
- Protecting Data Files During Download40
- Static File Protection42
- Password Protection43
- Clearing the Controller Memory44
- Allow Future Access Setting (OEM Lock)44
Chapter 3 Overview46
- Real-Time Clock Function File47
- Trim Pot Information Function File49
- Memory Module Information Function File50
- DAT Function File (Micrologix 1500 Only)53
- Base Hardware Information Function File56
- Communications Status File57
- Input/Output Status File62
Chapter 4 Instruction Set63
- Using the Instruction Descriptions64
Chapter 572
- High-Speed Counter (HSC) Function File72
- High-Speed Counter Function File Sub-Elements Summary74
- HSC Function File Sub-Elements75
- HSL - High-Speed Counter Load96
- RAC - Reset Accumulated Value97
PTO - Pulse Train Output99
Chapter 6100
- Pulse Train Output Function100
- Pulse Train Outputs (PTO) Function File104
- Pulse Train Output Function File Sub-Elements Summary105
- PWM - Pulse Width Modulation116
- PWM Function116
- Pulse Width Modulation (PWM) Function File117
- Pulse Width Modulated Function File Elements Summary118
XIC - Examine if Closed XIO - Examine if Open125
Chapter 7127
- OTE - Output Energize127
- OTL - Output Latch OTU - Output Unlatch128
- ONS - One Shot129
- OSR - One Shot Rising OSF - One Shot Falling130
Chapter 8133
- Timer Instructions Overview133
- TON - Timer, On-Delay136
- TOF - Timer, Off-Delay137
- RTO - Retentive Timer, On-Delay138
- How Counters Work139
- CTU - Count up CTD - Count down141
- RES - Reset142
Chapter 9 Using the Compare Instructions144
- EQU - Equal NEQ - Not Equal145
- GRT - Greater than LES - Less than146
- GEQ - Greater than or Equal to LEQ - Less than or Equal to147
- MEQ - Mask Compare for Equal148
- LIM - Limit Test149
Chapter 10 Using the Math Instructions152
- Updates to Math Status Bits153
- ADD - Add SUB - Subtract154
- MUL - Multiply DIV - Divide155
- NEG - Negate156
- CLR - Clear156
- SCL - Scale157
- SCP - Scale with Parameters158
- SQR - Square Root159
- SWP - Swap160
Using Decode and Encode Instructions163
Chapter 11164
- DCD - Decode 4 to 1-Of-16164
- ENC - Encode 1-Of-16 to 4165
- FRD - Convert from Binary Coded Decimal (BCD)166
- TOD - Convert to Binary Coded Decimal (BCD)170
Chapter 12 Using Logical Instructions173
- Updates to Math Status Bits174
- AND - Bit-Wise and175
- OR - Logical or176
- XOR - Exclusive or177
- NOT - Logical NOT178
Chapter 13 MOV - Move179
- MVM - Masked Move181
Chapter 14 COP - Copy File184
- FLL - Fill File185
- BSL - Bit Shift Left186
- BSR - Bit Shift Right188
- FFL - First In, First out (FIFO) Load190
- FFU - First In, First out (FIFO) Unload193
- LFL - Last In, First out (LIFO) Load196
- LFU - Last In, First out (LIFO) Unload199
Sequencer Instructions201
Chapter 15 SQC- Sequencer Compare202
- SQO- Sequencer Output205
- SQL - Sequencer Load208
Chapter 16 JMP - Jump to Label211
- LBL - Label212
- JSR - Jump to Subroutine212
- SBR - Subroutine Label213
- RET - Return from Subroutine213
- SUS - Suspend214
- TND - Temporary End214
- END - Program End215
- MCR - Master Control Reset215
Chapter 17219
- IOM - Immediate Output with Mask219
- REF- I/O Refresh220
Chapter 18 Information about Using Interrupts222
- User Interrupt Instructions227
- INT - Interrupt Subroutine227
- STS - Selectable Timed Start228
- UID - User Interrupt Disable229
- UIE - User Interrupt Enable230
- UIF - User Interrupt Flush231
- Using the Selectable Timed Interrupt (STI) Function File232
- Using the Event Input Interrupt (EII) Function File237
User Program for more Access Information237
- Read Only237
Chapter 19 The PID Concept243
- The PID Equation244
- PD Data File244
- PID - Proportional Integral Derivative245
- Input Parameters246
- Output Parameters249
- Tuning Parameters250
  - Read Only253
- Runtime Errors258
- Analog I/O Scaling259
- Application Notes260
- Application Examples264
Chapter 20 General Information269
- Instruction Types and Operation270
- Protocol Overview272
- String (ST) Data File273
- Control Data File274
- ACL - ASCII Clear Buffers275
- AIC - ASCII Integer to String276
- AWA - ASCII Write with Append277
- AWT - ASCII Write279
- ABL - Test Buffer for Line282
- ACB - Number of Characters in Buffer283
- ACI - String to Integer284
- ACN - String Concatenate286
- AEX - String Extract287
- AHL - ASCII Handshake Lines288
- ARD - ASCII Read Characters290
- ARL - ASCII Read Line291
- ASC - String Search293
- ASR - ASCII String Compare294
- Timing Diagram for ARD, ARL, AWA, and AWT Instructions296
- Using In-Line Indirection297
- ASCII Instruction Error Codes298
- ASCII Character Set299
ASCII Instructions269
Chapter 21303
- MSG - Message303
- The Message File304
  - Read/Write305
- Local Messages307
- Configuring a Local Message309
- Remote Messages316
- Configuring a Remote Message318
- MSG Instruction Error Codes321
- Timing Diagram for the MSG Instruction323
- SVC - Service Communications326
- MSG Instruction Ladder Logic328
- Local Messaging Examples329
Chapter 22 Queues and Records334
- Configuring Data Log Queues338
- DLG - Data Log Instruction340
- Data Log Status File341
- Retrieving (Reading) Records343
- Accessing the Retrieval File343
- Conditions that will Erase the Data Retrieval File345
- Programming Instructions Memory Usage and Execution Time347
Appendix A Micrologix 1200 Scan Time Worksheet353
- Programming Instructions Memory Usage and Execution Time355
Appendix B Micrologix 1500 Scan Time Worksheet360
Appendix C Status File Overview362
- Status File Details363
- Identifying Controller Faults383
Appendix D Contacting Rockwell Automation for Assistance391
Appendix E Communication Protocol394
- DF1 Full-Duplex Protocol397
- DF1 Half-Duplex Protocol398
- Modbus™ RTU Slave Protocol401
- ASCII Driver405
Glossary407

Brand	Allen-Bradley
Model	MicroLogix 1200
Category	Control Unit
Language	English

Allen-Bradley MicroLogix 1200 Reference Manual

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