Allen-Bradley MicroLogix 1400 User Manual

Publication 1766-RM001A-EN-P - October 2008
664 Number Systems
Hexadecimal and binary numbers have the following equivalence.
Example
Decimal number -8586 in equivalent binary and hexadecimal form.
Hexadecimal number DE76 = 13x16
3
+14x16
2
+7x16
1
+6x16
0
= 56950. We
know this is a negative number because it exceeds the maximum positive
value of 32767. To calculate its value, subtract 16
4
(the next higher power
of 16) from 56950: 56950 - 65536 = -8586.
2x16
3
= 8192
1x16
2
= 256
8x16
1
= 128
10x16
0
= 10
2 1 8 A 8586
Hexadecimal 2 1 8 A = 8586
Binary 0 0 1 0 0 0 0 1 1 0 0 0 1 0 1 0 = 8586
8192
1x2
13
256
1x2
8
128
1x2
7
10
1x2
3
+1x2
1
Binary 1 1 0 1 1 1 1 0 0 1 1 1 0 1 1 0 = -8586
Hexadecimal D E 7 6 = 56950
(negative number, -8586)
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Allen-Bradley MicroLogix 1400 Specifications

General

Processor	32-bit
Expansion Modules	Up to 7 expansion I/O modules
Power Supply	24V DC or 120/240V AC
Programming Software	RSLogix 500
Communication Ports	Ethernet, RS-232/RS-485 combo port
Controller Type	Programmable Logic Controller (PLC)
Series	MicroLogix
Digital Outputs	12
Analog Inputs	6 (embedded)
Analog Outputs	2 (embedded)
High-Speed Counter	6 high-speed counters
Pulse Output	2 (embedded)
Ethernet Port	Yes