Allen-Bradley 1756-L64 ControlLogix standard controller

The Allen-Bradley 1756-L64 is a ControlLogix standard controller. It has a 16 MB user memory available for data and logic and an I/O memory of 478 kb. An optional CompactFlash memory card can be used as an additional non-volatile memory of this controller. Note that the only memory card compatible with the 1756-L64 is the 128 MB 1764-CF128 model. The 1756-L64 controller can handle a maximum of 250 controller connections. It should be mentioned that the scan time for a project loaded in this controller may be slower compared to other 1756-L6x controllers loaded with the same project. It also has full support for controller redundancy.

Technical specifications for 1756-L64

ManufacturerRockwell Automation

BrandAllen-Bradley

Part Number/Catalog No.1756-L64

SeriesControlLogix

Module TypeProcessor Module

I-O Memory478 Kilobytes

User Memory16 MB

Maximum I-O128,000

Maximum Analog I-O4,000

Maximum Digital I-O128,000

Current Draw (5.1 Volts DC)1200 milliamps

Current Draw (24 Volts DC)14 milliamps

Power Dissipation3.5 Watts

Thermal Dissipation11.9 BTU per hour

Isolation Voltage30 Volts Continuous

EnclosureNone

ControlLogix 5560 controllers, like the 1756-L64 controller, have three controller tasks available and these are 100 programs/task, 32 tasks, and event tasks: all event triggers. Serial port communications available with this controller are DH-485, DF1 full/half-duplex, DF1 radio modem, ASCII, and Modbus via logic. The 1756-L64 controller also supports various communication options, particularly EtherNet/IP, Data Highway Plus, SynchLink, DeviceNet, ControlNet, Remote I/O, and Third-party process and device networks.