New Product Launch – PLC: Allen Bradley 1756-L61 Series B

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Hey there Contractors and fellow Service Professionals!

Today we are covering the Allen Bradley 1756-L61 Series B PLC.

This is a ControlLogix Logix5561 Processor with 2 MB user memory. This 1756-L61 controller comes with one RS-232 serial built-in communication port. The connections supported is 250 max.

Allen Bradley 1756-L61 ControlLogix Processor

The 1756-L61 Logix 5561 controller can be inserted into any slot of a chassis and multiple controller can be installed in the same chassis. This will allow the controllers to communicate with each other across the backplane but still operate independently.

ControlLogix Logix5561 Controller


Here is the Specifications table…

Allen Bradley 1756-L61 Series B
Available User Memory2048 KB
I/O Memory478 KB
Optional Nonvolatile Memory64 MB CompactFlash,
128 MB
Max Digital I/O128,000
Max Analog I/O4,000
Max Total I/O128,000
Current Draw1200 mA at 5 VDC
14 mA at 24 VDC
Controller Tasks32 Tasks
100 Programs / Task
Event TasksAll Event Triggers


Allen Bradley 1756-L61 controllers can also communicate across RS-232 Serial C (DF1/DH-485 protocol), DeviceNet, DH+, ControlNet, and EtherNet/IP networks. Also note that an appropriate communication interface module must be installed in the chassis to provide communication for a ControlLogix 1756-L61 controller.


Need one for your project?

Head on over to our >> online store here

Need help looking for the right item for your setup?

Call one of our knowledgeable team members at (800) 497-6225 ext. 1

Stay tuned for the next PLC item on our line up >> Allen Bradley 1756-L62S/B

PS: If you are curious to know more in depth about PLCs or any other items we have, then drop us a line here and we will get you more information on them.

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Catch you on the next post! 🙂

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