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1756-L55M23 1756-L55/A 1756-M23/A Allen Bradley

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 bac ... Show More
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Technical specifications

Manufacturer

Rockwell Automation

Brand

Allen-Bradley

Controller

CONTROLLOGIX LOGIX5555

Part Number/Catalog No.

1756-L55M23

I/O Count

Input Type

Memory:

1.5 KB of data and logic memory, 208 KB of I/O memory, and an integrated nonvolatile backup memory

Communication port:

Analog Circuits

Protocol:

* The Allen Bradley 1756-L55M23 has been discontinued by the manufacturer, however we specialize in obsolete parts and can likely still supply surplus and/or refurbished replacement 1756-L55M23 units instead of migration.

Rockwell Disclaimer:The product is used surplus. EcoTech Solutions Inc. is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because EcoTech Solutions Inc. is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, EcoTech Solutions Inc. makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. EcoTech Solutions Inc. also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. EcoTech Solutions Inc. also makes no representations as to your right to install any such firmware on the product. EcoTech Solutions Inc. will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Description

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.

Revisions

Revision Part #

Also known as

Don't see your particular revision? Contact us now.

Alternative names

Common Typos

1756-155M23

1756-155MZ3

1756-15SM23

1756-15SMZ3

1756-1S5M23

1756-1S5MZ3

1756-1SSM23

1756-1SSMZ3

1756-I55M23

1756-I55MZ3

1756-I5SM23

1756-I5SMZ3

1756-IS5M23

1756-IS5MZ3

1756-ISSM23

1756-ISSMZ3

1756-L55MZ3

1756-L5SM23

1756-L5SMZ3

1756-LS5M23

1756-LS5MZ3

1756-LSSM23

1756-LSSMZ3

175G-L55M23

175G-L55MZ3

175G-L5SM23

Appended Numbers

1756-L55M23-A

1756-L55M23-B

1756-L55M23-C

1756-L55M23-D

1756-L55M23-E

1756-L55M23-F

1756-L55M23-G

1756-L55M23-H

1756-L55M23-I

1756-L55M23-J

1756-L55M23-K

1756-L55M23-L

1756-L55M23-M

1756-L55M23-N

1756-L55M23-O

1756-L55M23-P

1756-L55M23-Q

1756-L55M23-R

1756-L55M23-S

1756-L55M23-T

1756-L55M23-U

1756-L55M23-V

1756-L55M23-W

1756-L55M23-X

1756-L55M23-Y

1756-L55M23-Z

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EcoTech Solutions sells used surplus products. EcoTech Solutions is not an authorized distributor, affiliate, or representative for the brands we carry. Products sold by EcoTech Solutions come with EcoTech Solution's 2-Year Warranty and do not come with the original manufacturer's warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. This website is not sanctioned or approved by any manufacturer or tradename listed.

Rockwell Disclaimer:The product is used surplus. EcoTech Solutions is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because EcoTech Solutions is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, EcoTech Solutions makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. EcoTech Solutions also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. EcoTech Solutions also makes no representations as to your right to install any such firmware on the product. EcoTech Solutions will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.