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Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

Allen-Bradley MicroLogix 1100
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Publication 1763-RM001B-EN-P - April 2007
Communications Instructions 369
PLC5 O, I, B, N 1-word 103
F
(2)
, L
2-word 51
T5-word20
ST
(1)
42-word 1
Modbus
Commands
B, N (command 5) 1-bit 1
B, N (command 6) 1-word 1
B, N
(commands 1, 2, and 15)
1-bit 1920 Modbus bit elements
(120 words)
(Commands 1 and 2 are read
only, 15 is write only.)
B, N
(commands 3, 4, and 16)
multi-register 120 Modbus register elements
(120 words)
(Commands 3 and 4 are read
only, 16 is write only.)
(1) MicroLogix 1100 Series B FRN 4 or later.
(2) Message Type must be 500CPU or PLC5. The Local File Type and Target File Type must both be Floating Point.
(3) MicroLogix 1100 OS Series A FRN3
Message Type File Type Element Size Maximum Number
of Elements per Message
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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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