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Allen Bradley ControlLogix 1756-L6X

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1756-L6X

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The 1756-L6X by Allen Bradley is a robust Central Processing Unit (CPU) within the ControlLogix series. It features high I/O point capacity with 128,000 digital I/O points and 4,000 analog I/O points, suitable for demanding applications.

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2 Year DO Supply Warranty
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1756-L6X

ManufacturerAllen Bradley
Product TypeCentral Processing Unit
Product LineControlLogix
Part Number1756-L6X
Weight0.13 lbs (0.06 kg)
Backplane Current Draw at 5.1 Volts DC1200 mA
Backplane Current Draw at 24 Volts DC14 mA
Built-In Communication Port1× RS-232 Serial Port
Compatible Cables1756-CP3 or 1747-CP3 Cables
Digital I/O Points128,000 I/O
Analog I/O Points4,000 I/O
Min. Operating Temperature0°C
Max. Operating Temperature60°C
Min. Storage Temperature-40°C
Max. Storage Temperature85°C
Min. Relative Humidity5% (Non-Condensing)
Max. Relative Humidity95% (Non-Condensing)
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The Allen Bradley 1756-L6X serves as a pivotal component in the ControlLogix series as a Central Processing Unit (CPU). Designed for efficient performance, it supports a significant digital input/output capacity of 128,000 I/O points, along with an analog I/O capacity of 4,000 points, catering to extensive control requirements.

For connectivity, the unit is equipped with a built-in RS-232 serial port, allowing seamless communication with external devices using compatible 1756-CP3 or 1747-CP3 cables. This functionality enhances the flexibility of integration into existing systems.

Power consumption is well-managed with a current draw of 1200 mA at 5.1 Volts DC and a minimal draw of 14 mA at 24 Volts DC. Operating temperatures range from 0°C to a maximum of 60°C, allowing the CPU to function in moderate environments.

When it comes to storage, the CPU can endure temperatures from -40°C to 85°C, ensuring reliability even in extreme conditions. Additionally, it accommodates a relative humidity range of 5% to 95%, without condensation, which adds to its adaptability for various industrial settings.