Used · Tested In stock
Allen Bradley 1756-L61 Series B Logix 5561 Controller Processor
SKU: 1756-L61 · Allen-Bradley
$375
Ships with actual-unit photos and the Network Orbitz warranty.
About this item
The Allen-Bradley 1756-L61 is the Logix5561 processor for the ControlLogix 1756 chassis, with 2 MB of user memory plus 478 KB of I/O memory for mid-size control applications. Programs load over the front RS-232 port (CH0 — DF1, DH-485 or ASCII), a keyswitch selects RUN, REM or PROG, and a CompactFlash slot takes a 1784-CF128 card for nonvolatile project storage.
This listing is a Series B unit.
Condition: Used, tested, as listed, covered by our warranty.
Used, tested unit: after Rockwell's reference render (shown with battery and keys), the photos show the exact processor that ships — front bezel and the side label/battery compartment.
Specifications
| Controller | Logix5561 (ControlLogix 1756 chassis) |
|---|---|
| User memory | 2 MB |
| I/O memory | 478 KB |
| Serial port | CH0 RS-232 (DF1, DH-485, ASCII; Modbus via logic) |
| Nonvolatile storage | CompactFlash slot (1784-CF128) |
| Front panel | Keyswitch (RUN/REM/PROG) + status LEDs |
| Controller tasks | 32 |
| Hardware series | B |
| Model | 1756-L61 |
|---|---|
| MPN | 1756-L61 |
| Brand | Allen-Bradley |
| Warranty | Network Orbitz warranty from delivery: repair, replacement, or refund on functional defects. Sealed units may also carry the manufacturer warranty. |
|---|---|
| Returns | Start an RMA with your order number — we respond with a number and prepaid return instructions. |
| Shipping | Tracked, insured carriers (DHL, FedEx, UPS) to 30+ countries. Freight crating for heavy items. |
| Duties & customs | International duties and taxes are billed by your local customs authority — we're happy to advise on documentation before you order. |
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