Allen Bradley 1769-ARM CompactLogix Address Reserve Module The Allen Bradley 1769-ARM, also cataloged as the 1769-ARM Address Reserve Module, operates...
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Allen Bradley 1769-ARM CompactLogix Address Reserve Module
The Allen Bradley 1769-ARM, also cataloged as the 1769-ARM Address Reserve Module, operates as a dedicated hardware component for I/O address reservation within CompactLogix and MicroLogix controller systems.
Hardware Specifications
Parameter
Specification
Model
1769-ARM
Brand
Allen Bradley
Origin
USA
Weight
0.25 lbs (0.11 kg)
Power Consumption
0.3 W maximum heat dissipation
Product Type
Address Reserve Module
Product Line
CompactLogix
Controller Compatibility
CompactLogix and MicroLogix processors
Series
A and B
Module Function
I/O address reservation
Backplane Current
60 mA at 5.1 V
Isolation Voltage
30 Volts continuous
Enclosure Type
Open
EtherNet/IP and Backplane Bus Integration
The 1769-ARM module operates as a CompactLogix system component that reserves I/O addresses without providing field signal conversion. Therefore, it maintains the configured I/O layout while allowing future module expansion within the controller architecture.
Additionally, the module supports backplane bus communication through the 1769 platform interface. This configuration enables consistent I/O density scaling because the controller retains predefined address locations during system modification.
The module does not process analog or digital field signals. Instead, it provides a hardware position placeholder that preserves the controller memory map and I/O configuration structure.
Frequently Asked Questions
Q: What is the primary function of the 1769-ARM module? A: The 1769-ARM reserves an I/O address position in CompactLogix and MicroLogix systems without performing field signal input or output operations.
Q: What backplane power does the 1769-ARM require? A: The module requires 60 mA current draw at 5.1 V through the backplane connection.
Q: Can the 1769-ARM provide additional I/O channels? A: No. The module only reserves an address location and does not add physical I/O channels to the controller system.
Field Installation Guidelines
Install the 1769-ARM module on the 1769 CompactLogix I/O bus according to the controller installation manual.
Verify that the module connector is fully seated before applying system power. Keep the backplane connection free from contamination and mechanical stress.
Route control wiring separately from high-voltage power conductors to reduce electrical interference. Maintain proper grounding practices for the control cabinet and verify that unused I/O positions match the configured controller project.
Confirm the controller I/O configuration after installation to ensure that the reserved address location matches the programmed system layout.
