Allen-Bradley MicroLogix 1200 Reference Manual page 24

1-8 I/O Configuration
Publication 1762-RM001C-EN-P
Figure 1.2 Horizontal Orientation
Embedded I/O = Slot 0
In most cases, you can use the following address format:
NOTE
X:s/b (X = file type letter, s = slot number, b = bit number)
See I/O Addressing on page 1-13 for complete
information on address formats.
Expansion Power Supplies and Cables
To use a MicroLogix 1500 controller with a 1769 Expansion I/O Power
Supply, verify that you have the following:
• MicroLogix 1500 Processor:
Catalog Number 1764-LSP, FRN 3 and higher
Catalog Number 1764-LRP, FRN 4 and higher
• Operating System Version: You can check the FRN by looking at word
S:59 (Operating System FRN) in the Status File.
If your processor is at an older revision, you must
IMPORTANT
upgrade the operating system to FRN 3 or higher to use
an expansion cable and power supply. On the Internet,
go to http://www.ab.com/micrologix to download the
operating system upgrade. Enter MicroLogix 1500; go to
Tools and Tips.
LIMIT OF ONE EXPANSION POWER SUPPLY AND CABLE
ATTENTION
The expansion power supply cannot be connected
!
directly to the controller. It must be connected using one
of the expansion cables. Only one expansion power
supply may be used in a MicroLogix 1500 system.
Exceeding these limitations may damage the power
supply and result in unexpected operation.
Expansion
I/O Bank 0
Expansion
I/O Bank 1