Get The ControlLogix Allen-Bradley 1756 | Marci Network Hardware
                     Get The ControlLogix 
Allen-Bradley 1756 
Marci Hardware purchases and sells Cisco 
equipment, switches, firewalls, routers, 
automation PLCs, Allen Bradley equipment, and 
test equipment. We assist businesses, 
consultants, and clients in purchasing or selling 
products such as the "product model." We are 
constantly on the lookout for new inventory. If 
you've recently upgraded your switching network 
or have excess inventory to sell, contact a buyer 
agent today for a quote!
What are the Benefits of ControlLogix Allen-Bradley 
1756  
Allen Bradley's primary controllers are ControlLogix Allen Bradley 1756 family) and 
CompactLogix (1768, 1769, and 5069 families) Programmable Automation Controllers. The 
ControlLogix is designed for large, complex applications, whereas the CompactLogix is 
designed for smaller, less complex applications. GuardLogix controllers are an add-on to 
the ControlLogix that adds a separate safety controller to the processor unit. 
The GuardLogix, and more specifically the 5580 GuardLogix controllers, are a standard 
5580 ControlLogix controller with an extra processor and programming dedicated to safety 
tasks. While the ControlLogix has memory sizes ranging from 3MB to 40MB, the 
GuardLogix is limited to 3MB-20MB of standard memory, with an additional 1.5MB-6MB of 
memory reserved for safety tasks.
The switch to a GuardLogix processor enables 
the control of automation functions as well as 
the simultaneous control of safety functions in 
a single processor unit. Prior to the 5580 
series, GuardLogix controllers required a 
safety partner, which meant that integrated 
safety required two separate processor cards. 
Without a safety partner, the 5580 series can 
achieve reduced safety certification, allowing 
all but the highest levels of safety to be 
achieved with a single processor unit. SIL2/PLd 
levels of protection can be achieved with a 
single GuardLogix 5580 processor. Because 
this level of safety covers the majority of risks, 
a single processor safety solution was 
developed. Because of the lower price point, 
more solutions are available.
The switch to a GuardLogix processor enables the control of automation 
functions as well as the simultaneous control of safety functions in a 
single processor unit. Prior to the 5580 series, GuardLogix controllers 
required a safety partner, which meant that integrated safety required 
two separate processor cards.
 Without a safety partner, the 5580 series can achieve reduced safety 
certification, allowing all but the highest levels of safety to be achieved 
with a single processor unit. SIL2/PLd levels of protection can be 
achieved with a single GuardLogix 5580 processor. Because this level of 
safety covers the majority of risks, a single processor safety solution 
was developed.
The CompactLogix (1769 and 5069 
family) and CompactGuardLogix 
controllers are related in the same way 
that the ControlLogix and GuardLogix 
controllers are. Each Compact 
GuardLogix controller consists of a 
standard CompactLogix controller plus 
an additional safety controller. The 
CompactGuardLogix is rated up to SIL2, 
PLd, Cat3 in the absence of a safety 
partner. CompactGuardLogix is an 
excellent controller choice for smaller 
systems that do not require the highest 
levels of safety.
About 
Us
The entire marci range is available for the best prices right here. 
Along with Full Marci Expert Services, Assessment, and Managed 
Services. You can get a quote. Marci Hardware is a privately held 
corporation that purchases and sells used, refurbished, and new 
surplus networking equipment, as well as industrial automation 
and test equipment. We are not an authorised distributor for Cisco, 
Rockwell Automation, Fluke Network, Exfo, Juniper, Siemens, or 
any of the other hardware manufacturers whose products we sell. 
Manufacturer warranties do not apply to our sales, and we provide 
our own warranty. We respect these OEMs' intellectual property 
and do not include licences with our sales.
Contact 
Us
www.marcinetworkhardware. 12705 S KIRKWOOD RD SUITE 100 
com STAFFORD, TX 77477
(832) 343-0718 [email protected]