1756-L61 AB PLC CPU 2 MB Memory RS232 Chassis Mount

Parameters

• Product type: Modular PLC processor
• User memory: 2 MB for data and logic
• I/O memory: 478 KB
• Built-in serial port: RS-232
• 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: Optional compatible CompactFlash card
• Battery selection: Match controller hardware series
• Programming: Compatible RSLogix 5000 version

The AB 1756-L61 is a chassis-mounted PLC processor with 2 MB of user memory for application logic and data. Its built-in RS-232 interface supports serial engineering and communication tasks. The controller works with separate I/O and network modules, allowing an installed rack to retain its existing field connections when a properly matched processor is replaced. Review the project memory requirement, hardware series and firmware before ordering. Any CompactFlash card, battery, key or communication cable should be identified individually in the quotation.

Supply and Quotation

Request a quotation for AB 1756-L61 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

Check the controller series, firmware major revision, project file, chassis and installed communication modules. Match the backup battery and optional memory card to the actual hardware series.

FAQ

Q1. How much user memory does 1756-L61 provide?

It provides 2 MB for data and logic, with 478 KB of separate I/O memory. Verify the existing project fits the controller target.

Q2. Is Ethernet built into the processor?

No. The built-in communication port is RS-232. Ethernet access uses an appropriate communication module in the chassis.

Q3. Can any battery or memory card be used?

No. Battery selection depends on the hardware series, and the backup card must be a supported CompactFlash option. Check the offered unit and original system requirements.

Q4. How can I request a quotation for 1756-L61?

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.