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Allen-Bradley 1756-L55 ControlLogix5555 processor with 1756-M12/A 750 KB memory board, the 1756-L55M12 pairing. Single-slot 1756 chassis controller, 208 KB I/O.
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| MFR / Brand | Allen Bradley |
|---|---|
| MPN | 1756-L55 with 1756-M12/A |
| Model | 1756-M12/A & 1756-L55 |
| Type | PLC Processor Module |
|---|---|
| Industry Terms | PLC processor, controller module, CPU module, Logix controller, ControlLogix processor, memory expansion board, Logix5555 |
| Common Misspellings | 1756-L5S; 1756-M1Z; 1756 L55M1Z; Control Logix 5555; ControlLogix 5555 L55; Allen Bradly 1756L55 |
| Application Types | ControlLogix control system spares and rebuilds, large machine and process control, legacy ControlLogix line support |
| Controller Platform | ControlLogix |
| Mpn Variants | 1756-L55; 1756L55; 1756-M12; 1756M12; 1756-M12/A; 1756-L55M12; 1756L55M12; 1756 L55 M12; Logix5555 |
| Manufacturer Status | Discontinued; superseded by ControlLogix 1756-L6x and 1756-L7x |
| Compatible With Replaces | 1756 ControlLogix chassis; 1756-M12 memory board on 1756-L55 base processors; 1756-BA1 backup battery |
| Part Number | 1756-L55 with 1756-M12/A |
The Allen-Bradley 1756-L55 is a ControlLogix5555 (Logix5555) processor, hardware Series A, with a 1756-M12/A memory expansion board fitted. The pairing is catalogued as the 1756-L55M12. It occupies one slot in a 1756 ControlLogix chassis and runs ladder, function block, structured text and sequential function chart programs. Sold as 1 piece.
1756 — ControlLogix platform.
L55 — Logix5555 controller.
M12 — memory expansion board, 750 KB.
1756-L55M12 — combined catalogue number for the L55 processor with the M12 board fitted.
SER A — hardware series A on the processor.
Controller: ControlLogix5555 (Logix5555). User Memory: 750 KB, supplied by the fitted 1756-M12 board. I/O Memory: 208 KB. Memory Type: volatile, battery-backed. Backup Battery: 1756-BA1 lithium. Slots Occupied: 1. Hardware Series: A. Programming Software: RSLogix 5000 or Studio 5000 Logix Designer, firmware-compatible revision. Condition: Seller refurbished, tested. Manufacturer Status: discontinued; superseded by the 1756-L6x and 1756-L7x controllers. Part Number: 1756-L55 with 1756-M12/A. Unit Quantity: 1 Pc.
Mounting: one slot in a 1756 ControlLogix chassis. The 1756-M12 memory board is fitted to the processor.
The 1756-M12 memory board fits 1756-L55 base processors. The L55 memory board range is M12, M13, M14, M16, M22, M23 and M24 in ascending capacity. The 1756-L6x and 1756-L7x controllers have integral memory. Controller firmware major revision matches the RSLogix 5000 or Studio 5000 project major revision. Searchable variants: 1756-L55, 1756L55, 1756-M12, 1756M12, 1756-M12/A, 1756-L55M12, 1756L55M12, 1756 L55 M12, Logix5555.
750 KB user memory and 208 KB I/O memory.
Volatile, battery-backed memory with a 1756-BA1 lithium battery.
The combined catalogue number for a 1756-L55 processor with a 1756-M12 memory board fitted.
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