Allen Bradley 1756-L55M23/A ControlLogix Logix5555 Processor Module

FAQ

Q1: What is the Allen-Bradley 1756-L55M23/A?
A: It is a ControlLogix Logix5555 processor module used for executing control programs and managing I/O data.

Q2: How much user memory does the 1756-L55M23/A have?
A: It provides 1.5 MB of data and logic memory and 208 KB of I/O memory.

Q3: Does the 1756-L55M23/A have nonvolatile memory?
A: Yes. The processor provides 1.5 MB of nonvolatile memory.

Q4: What is the maximum I/O capacity?
A: The controller supports up to 128,000 I/O points, including up to 4,000 analog input and 2,000 analog output points.

Q5: What communication networks can it support?
A: With the appropriate communication modules, the controller can communicate through RS-232-C, DeviceNet, DH+, ControlNet, and EtherNet/IP networks.

Q6: What is the program scan time?
A: The typical program scan time is approximately 0.08 ms.

Q7: Is the 1756-L55M23/A discontinued?
A: Yes. Rockwell Automation lists the Series A 1756-L55M23 as discontinued.

Q8: What are the dimensions and weight?
A: The approximate dimensions are 145 × 35 × 140 mm, and the manufacturer-specified approximate weight is 0.35 kg.

1756-L55M23/A Allen Bradley

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