Allen Bradley 1756-L71K ControlLogix Logix5571 Controller

FAQ

Q1: What is the main function of the 1756-L71K controller?
The 1756-L71K is a ControlLogix 5571 programmable automation controller used for high-performance industrial automation and process control applications.

Q2: What does the “K” suffix mean in 1756-L71K?
The “K” version includes conformal coating to protect the electronics in harsh or corrosive industrial environments.

Q3: How much memory does the controller have?
The controller provides 2 MB of user memory and 0.98 MB of I/O memory.

Q4: Does the 1756-L71K include built-in Ethernet?
No. EtherNet/IP communication requires separate communication modules such as 1756-EN2T, EN2TR, or EN3TR.

Q5: What type of nonvolatile memory is supported?
The controller supports Secure Digital (SD) memory cards for project and firmware storage.

Q6: Which energy storage module is used with this controller?
The compatible capacitor energy storage module is 1756-ESMCAP or 1756-ESMCAPK.

Q7: Is the 1756-L71K still available?
Yes. Rockwell Automation currently lists the product lifecycle status as “Active Mature.”

Q8: What is the difference between the 1756-L71 and 1756-L71K?
Functionally they are the same controller; the L71K adds conformal coating protection for harsh environments.

1756-L71K Allen Bradley

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