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Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

Allen-Bradley MicroLogix 1100
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Publication 1763-RM001C-EN-P - October 2009
Table of Contents 7
EQU - Equal
NEQ - Not Equal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
GRT - Greater Than
LES - Less Than . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
GEQ - Greater Than or Equal To
LEQ - Less Than or Equal To . . . . . . . . . . . . . . . . . . . . . . . . 182
MEQ - Mask Compare for Equal . . . . . . . . . . . . . . . . . . . . . 182
LIM - Limit Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Chapter 9
Math Instructions Using the Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . 188
Updates to Math Status Bits . . . . . . . . . . . . . . . . . . . . . . . . . 189
Using the Floating Point (F) Data File . . . . . . . . . . . . . . . . . . 190
ADD - Add
SUB - Subtract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
MUL - Multiply
DIV - Divide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
NEG - Negate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
CLR - Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
ABS - Absolute Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
SCL - Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
SCP - Scale with Parameters . . . . . . . . . . . . . . . . . . . . . . . . . 197
SQR - Square Root . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Chapter 10
Conversion Instructions Using Decode and Encode Instructions . . . . . . . . . . . . . . . . . 201
DCD - Decode 4 to 1-of-16 . . . . . . . . . . . . . . . . . . . . . . . . . 202
ENC - Encode
1-of-16 to 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
FRD - Convert from Binary Coded Decimal (BCD) . . . . . . . . 204
TOD - Convert to Binary Coded Decimal (BCD) . . . . . . . . . . 208
GCD - Gray Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Chapter 11
Logical Instructions Using Logical Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Updates to Math Status Bits . . . . . . . . . . . . . . . . . . . . . . . . . 212
AND - Bit-Wise AND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
OR - Logical OR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
XOR - Exclusive OR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
NOT - Logical NOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Chapter 12
Move Instructions MOV - Move . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
MVM - Masked Move . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
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Allen-Bradley MicroLogix 1100 Specifications

General IconGeneral
Processor32-bit
Programming SoftwareRSLogix 500
MountingDIN rail or panel mount
Power Supply24V DC
TypeCompact PLC
Digital Inputs12
Digital Outputs8
Analog Inputs4 (depending on model)
Analog OutputsOptional with expansion module
Programming LanguageLadder Logic
Operating Temperature0 to 55 °C (32 to 131 °F)
SeriesMicroLogix

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