1756-L64

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1756-L64

Type

ControlLogix controller

Application

PLC controller

Used with

ControlLogix 1756 chassis

Controller family

ControlLogix 5560

Memory for data and logic

16 MB

I/O memory

478 KB

Back-up memory

CompactFlash card (optional, does not come with the controller)

Controller tasks

32 tasks; 100 programs/task; event tasks: all event triggers

Communication ports

1 port, RS-232 serial

Communication options

EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SynchLink, third-party process and device networks

Serial port communication

ASCII; DF1 full/half-duplex; DF1 radio modem; DH-485; Modbus via logic

Controller connections supported, max

250

Network connections, per network module

128 ControlNet (1756-CN2/B); 100 ControlNet (1756-CN2/A); 40 ControlNet (1756-CNB); 256 EtherNet/IP, 128 TCP (1756-EN2x); 128 EtherNet/IP, 64 TCP (1756-ENBT)

Controller redundancy

Full support except for motion applications

Integrated motion

Integrated Motion on the EtherNet/IP network; Sercos interface; analog options: encoder input, LDT input, SSI input

Programming languages

Relay ladder; structured text; function block; sequential function chart (SFC)

Clock support and memory retention at power-down

Battery

Status indicators

Six status indicators

Unconnected buffer defaults

10 (40, max)

Minimum programming software

Series B: RSLogix 5000 version 16.03.00 or later

Technical documents (1)

• Rockwell Automation publication 1756-UM001 (ControlLogix 5570 and 5560 controllers)

Key features

• 16 MB memory for data and logic
• Supports 32 tasks with 100 programs per task
• Ladder, structured text, function block and SFC programming
• Full redundancy support except for motion applications
• Optional CompactFlash card for back-up memory

About the Allen-Bradley 1756-L64

The Allen-Bradley 1756-L64 is a ControlLogix 5560 controller, which Rockwell Automation names the ControlLogix 16 MB Memory Controller. Rockwell publication 1756-UM001 lists 16 MB of memory for data and logic, 478 KB of I/O memory and one RS-232 serial port. The same publication gives 32 tasks, 100 programs per task and a maximum of 250 controller connections. Rockwell lists its lifecycle status as Discontinued.

What is the 1756-L64 used for?

In a ControlLogix system the 1756-L64 is the controller that connects to I/O and devices over networks including EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus and Remote I/O. It can be programmed in relay ladder, structured text, function block or sequential function chart, and supports Integrated Motion on the EtherNet/IP network and Sercos interface. Rockwell gives Series B: RSLogix 5000 version 16.03.00 or later as the minimum programming software.

Lifecycle and successor

Discontinued.

Before you order

What to photograph or confirm so the right unit is quoted.

Check that the catalog number on the module label reads 1756-L64, and note the series letter and firmware revision shown there. Send us a photo of the label if you want us to confirm the part before you order.