1769-L32C Allen-Bradley CompactLogix 750KB ControlNet Processor

Availability: 99 left in stock

Allen-Bradley 1769-L32C CompactLogix Controller The Allen-Bradley 1769-L32C, also cataloged as the 1769-L32C Programmable Automation Controller, operates as a dedicated hardware...

SKU: 1769-L32C

Manufacturer: Allen Bradley
Product No.: 1769-L32C
Product Type: CPU Processors
Product Origin: USA
Payment:T/T, Western Union
Weight: 360g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Allen-Bradley 1769-L32C CompactLogix Controller

The Allen-Bradley 1769-L32C, also cataloged as the 1769-L32C Programmable Automation Controller, operates as a dedicated hardware component for deterministic, high-speed scheduled data transfers within ControlNet network architectures. This processing unit features a 750 KB embedded user memory capacity and directly executes local and remote logical sequences via an integrated BNC coaxial connector. Operating as a core module within the CompactLogix 5332C platform, the unit drives field-level I/O configurations while coordinating multi-node messaging topologies over serial and network layers.

Hardware Specifications

Parameter	Specification
Model	1769-L32C
Brand	Allen-Bradley
Origin	USA
Weight	0.36 kg (Standard 1769 controller chassis)
Dimensions	Standard 1769 module footprint
Operating Temp	0 to 60 deg C
Power Consumption	650 mA at 5.1 VDC backplane current draw
User Memory	750 KB
Local I/O Capacity	Up to 16 modules (3 banks maximum)
Integrated Ports	1 x ControlNet (BNC Coaxial), 1 x RS-232 Serial Port
ControlNet Throughput	5 Mbps deterministic scheduling
Max ControlNet Nodes	99 Nodes
I/O Distance Rating	4 modules max separation from power supply
Isolation Voltage	30 V continuous (Basic Insulation Type); tested at 500 VAC for 60 s
Real-Time Clock Backup	Internal clock with 1769-BA battery backup

Deterministic Networks and I/O Density Scaling

This Allen-Bradley controller utilizes an integrated 5 Mbps ControlNet communication subsystem to execute scheduled, repeatable data exchanges across deterministic networks. The synchronous medium access control ensures that critical I/O updates and interlocking signals bypass standard packet collisions common to non-deterministic topologies. For I/O density scaling, the processing architecture expands across up to three discrete module banks linked by expansion cables, supporting up to 16 local 1769 I/O modules. Firmware flash compatibility across RSLogix 5000 and Studio 5000 environments ensures steady task prioritization and execution scheduling during large-scale network updates.

Frequently Asked Questions

Q: What specific mechanical or electrical limitations govern the physical placement of I/O modules relative to the controller power supply?

A: The hardware enforces a strict I/O module distance rating, meaning no 1769 module can be installed more than four slots away from a system power supply, preventing excessive voltage drops across the internal backplane traces.

Q: How is the non-volatile retention of the 750 KB application memory executed if the internal 1769-BA battery fails?

A: Application code and user data can be permanently retained by inserting an external CompactFlash card into the integrated slot, allowing non-volatile restoration during power cycles regardless of battery condition.

Q: What serial data transport layers are supported via the integrated RS-232 connection port?

A: The physical RS-232 interface natively supports DF1 and DH-485 automation protocols, and it can execute Modicon Modbus architectures through user-programmed ladder logic routines.

Field Installation Guidelines

Engineers must slot the controller module onto the DIN rail or panel mount backing within a de-energized enclosure assembly. Ensure that all system power sources are completely isolated before engaging the bus connectors with adjacent 1769 components to avoid damaging the internal electronics.

Fasten the adjacent module slide locks securely to complete the internal backplane data loop. Connect the ControlNet BNC cable using high-grade RG-6 coaxial media, ensuring the locking collars are twisted and engaged fully to maintain a 5 Mbps link speed.

For standard noise mitigation, route the serial and network coaxial cables through independent low-voltage conduits. Technicians must land the enclosure ground wires directly onto a low-impedance copper earth bus to satisfy the 500 VAC dielectric isolation and protection parameters.

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