Rated 4.7 with 15 reviews


Revisions: Ser A Ser B

Description:  Allen Bradley CompactLogix L43 additional Processor, 2.0MB Standard capacity of memory, 0.5MB additional capacity of memory Module

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Warranty: 1 year DO Supply Warranty Included
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Repairs: We offer repair service for the 1768-L43S.
Exchange: Exchange credit for your defective unit available.

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About 1768-L43S

The Allen-Bradley 1768-L43S compact GuardLogix controller is a powerful controller module. It provides unmatched scalability and flexibility across applications. This module has a standard memory of 2 MB and a 0.5 MB safety memory. The power dissipation of this module is 4 to 7.5 W. The operating temperature of this module is 0 to 60 degrees Celsius and the storage temperature of the 1768-L43S is -4 to 85 degrees Celsius. It has a relative humidity of 5 to 95% non-condensing. The vibration of this module is 5 g at a frequency of 10 to 500 Hertz. The operating and nonoperating shock of this module are 30 g and 50 g, respectively. This module has a radiated RF immunity of 10V/m with 1 kHz sine-wave 80% AM from 80 to 2000 MHz.

The 1768-L43S is ideal for controllable systems on EtherNet/IP™ or ControlNet™. This module functions well in an economical platform and it has rackless input and output to simplify the installation. The 1768-L43S controller has security controls and fully-integrated motion. If you connect or disconnect the serial cable with the power supplied to this module or serial device at the end of the cable, an electric arc may occur. Be sure to remove the power first.

Technical specifications:

Manufacturer:Rockwell Automation
Part Number/Catalog No.:1768-L43S
Product Line:Compact GaurdLogix
Module Type:Processor Module
Module Type:Controller
Memory:2 MB
Weight:15.9 ounces
Dimensions (HxWxD):5.18 x 3.55 x 4.8 inches
Series:A and B
Isolation Voltage:30 Volts Continuous
Backplane Current:1.4 Amps at 24 Volts
Power Consumption:33.6 Watts
Power Dissipation:7.5 Watts


Question: Which controller modes can I use on my 1768-L43S Compact GuardLogix Controller?

Answer: The 1768-L43S Compact GuardLogix Controller has three modes: RUN, PROGram, and REMote. 


Question: How many 1768 modules can the 1768-L43S Compact GuardLogix Controller support?

Answer: The 1768-L43S Compact GuardLogix Controller can support up to 2 local 1786 modules and up to 16 local and remote I/O modules. 


Question: What is the price of a 1768-L43S Compact GuardLogix Controller?

Answer: Submit a quote request, send us an email, or call 800-730-0292 for our best price.


Question: Does DO Supply offer repair services for the 1768-L43S Compact GuardLogix Controller?

Answer: Yes, DO Supply offers repair services for a variety of Allen-Bradley products, such as the 1768-L43S. For more information or to request a repair quote, please click here

Type Lead Time Price Action
Repair Service 2-4 weeks $1970.10Add to Cart

Our highly skilled technicians can repair your 1768-L43S. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Please refer to the manual for more information about the 1768-L43S such as the wiring diagrams, data sheets, firmware information and migration or obsolescence details.

Revision Part # Also Known as Availability
1768-L43S Ser A
1768-L43S/A, Series A, Rev A Request Quote
1768-L43S Ser B
1768-L43S/B, Series B, Rev B Request Quote

Common misspellings: 1768L43S