1756-L72 AB PLC CPU 4 MB Memory USB Chassis Mount

Parameters

• Product type: Modular PLC controller
• User memory: 4 MB
• I/O memory: 0.98 MB
• Built-in engineering port: USB 2.0
• Ethernet connection: Via a compatible chassis communication module
• Mounting: 1756 chassis
• Power arrangement: Powered through the chassis backplane
• Local field I/O: Separate I/O modules required
• Backup storage: Compatible SD card
• Retention system: Energy storage module; confirm installed option
• Programming: Compatible RSLogix 5000 or Logix Designer version

The AB 1756-L72 is a modular PLC controller with 4 MB of user memory and a USB engineering port. Separate chassis modules provide field I/O and industrial network connections. The controller uses an energy storage arrangement and supports an SD card for project storage, with the actual accessories to be confirmed for the offered unit. For replacement work, compare the complete controller reference, firmware and project memory requirements. Preserve the existing rack configuration and specify whether the quote must include a key, SD card or energy storage module.

Supply and Quotation

Request a quotation for AB 1756-L72 with quantity, destination and preferred condition. Send the installed unit label and required firmware information. We will confirm availability, included parts, inspection scope, delivery terms and warranty for the specific offer. Programming software, machine projects and optional system components require separate confirmation.

Compatibility

Match the catalog number, hardware series, firmware and original project. Check the chassis communication modules and confirm the installed energy storage and SD-card options.

FAQ

Q1. How much user memory does 1756-L72 have?

This reference has 4 MB of user memory and 0.98 MB of I/O memory. Check project capacity separately from SD-card storage.

Q2. Is the USB port an Ethernet connection?

No. USB is used for engineering access. Ethernet operation requires a compatible communication module in the chassis.

Q3. Is the SD card capacity the same as program execution memory?

No. The SD card stores project images, while execution uses the controller user memory. Confirm both the required memory capacity and the included card.

Q4. How can I request a quotation for 1756-L72?

Send the complete model, quantity, preferred condition and destination. Include the hardware series and firmware if matching an installed unit. Price and availability are confirmed in the offer.

Q5. Does the supply include the machine program or software license?

Hardware supply does not automatically include application files, passwords or software licenses. Confirm access to the original project and compatible engineering software before replacement.

Q6. What inspection information can be requested?

Request clear label and connector photos, firmware identification and an agreed power-up or communication check where applicable. Confirm accessories, packaging, dispatch timing and warranty before shipment.