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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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4.8 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Love it!
Size: XX-Large, Color: Lavender/White Stripe
I am a cheapskate and try hard to find bargains, but i have no problem with paying this price for a quality piece of clothing! Loving the fit and especially the lavender color. Very classy wearing it fully buttoned or open collared. Looks and feels great!! I like this so much I bought the Aqua stripe and green stripe also!
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Reviewed in the United States on April 24, 2026
★★★★★ 4
Very solid option for comfort but the pattern of the shirt I received was off-putting
Size: Small, Color: Grey White Stripe
The shirt itself is great, sizing is spot on with an athletic tapered fit which I always prefer in a polo. The material is classic maelreg cotton feeling without the heaviness and water holding of typical cotton shirts. You can run in these polos, workout, go out to lunch or dinner, or simply sleep in these they are so comfortable. It's the patterns offered that made me return this and another I tried out. Colors are spot on with descriptions but the patters are small enough to play tricks on eyes, I received complaints from both my wife and daughter (separately) about the pattern hurting their eyes hence the 4 star instead of 5. Others may love the patter but know that it isn't as universally pleasing as more other shirts offered by this brand
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Good
Size: Medium, Color: Navy Stripe
Good, soft material
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Comfortable, and good quality
Size: X-Large, Color: Cobalt Stripe
Nice quality for the $
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Looks decent, doesn’t cook me in summer
Size: Medium, Color: Grey White Stripe
Bought this mainly as another golf shirt and wasn’t expecting much. Material is lightweight and comfortable enough during warmer days. Fit was pretty close to expected sizing.
Sometimes inexpensive golf shirts end up feeling stiff or cheap after washing. This one has held up fine so far. Good everyday option.
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Reviewed in the United States on May 26, 2026