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Description
1756-L55M23 1756-L55/A 1756-M23/A Allen BradleyThe Allen Bradley 1756 L55M23 is a ControlLogix Controller in the Logix5000 family of controllers. It has 1. 5 KB of data and logic memory, 208 KB of I O memory, and an integrated nonvolatile backup memory. The 1756 L55M23 has a Logix CPU as well as a backplane CPU to divide its resources. Application codes and messages are executed by the Logix CPU and the backplane CPU sends and receives data from the backplane and it communicates with I O. The 1756
The Allen-Bradley 1756-L55M23 is a ControlLogix Controller in the Logix5000 family of controllers. It has 1.5 KB of data and logic memory, 208 KB of I/O memory, and an integrated nonvolatile backup memory. The 1756-L55M23 has a Logix CPU as well as a backplane CPU to divide its resources. Application codes and messages are executed by the Logix CPU and the backplane CPU sends and receives data from the backplane and it communicates with I/O. The 1756-L55M23 controller is connected to the workstation or another controller via the serial port. A 1756-CP3 serial cable is used to connect the controller to the workstation. For communication with other devices, it uses various networks like Ethernet/IP, ControlNet, DeviceNet, etc. The 1756-L55M23 can produce and consume system-shared tags over the EtherNet/IP or the ControlNet networks. One connection each is required for both the producer and the consumer. The 1756-L55M23 controller has a multitasking feature which lets processing time be allocated to different operations in the application. It also contains programs for the group data and logic. It provides routines for encapsulating executable code in a single programming language. It supports Logix5000 programming languages both online and offline. In case of any I/O communication failure, it has an I/O LED that flashes green. It also contains a fault handler for diagnostics. The 1756-L55M23 supports the 1756-BA1 or the 1756-BATM battery, either of which need to be regularly maintained.
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Exchange/Return Notes
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4.9 ★★★★★
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Product Reviews
★★★★★ 5
Taxau Men's watch
Color: Silver-gold Watch-G8405
very handsome watch, looks dressy or casual
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Handsome Watch!
Color: Grey Watch-Grey Face-G8406
This is a stunning watch. Masculine and nice enough for a more formal occasion. Great value and comfortable fit.
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Reviewed in the United States on March 29, 2026
★★★★★ 4
Nice size and look
Color: Silver Face-G8470
Nice watch and great expansion band . Nice value for the money
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Reviewed in the United States on February 9, 2026
★★★★★ 5
. BUT the problem is I received Two I don’t want Two now what?
Color: Silver-gold Watch-G8405
Looks good But I don’t want two which I received. Now what I do NOT want billed for Two.
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Reviewed in the United States on February 17, 2026
★★★★★ 5
Nice watch
Color: Blue Face-G8470
Very nice. Easy to adjust wristband. Great price.
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Reviewed in the United States on February 9, 2026