1756-L71 | ControlLogix 2 MB Controller
1756-L71 | ControlLogix 2 MB Controller
Technical Specifications for 1756-L71
Manufacturer | Rockwell Automation |
Series | ControlLogix |
Integrated Motion | • SERCOS interface • Analog options (encoder input, LDT input, SSI input) • Integrated Motion on the EtherNet/IP network |
Redundancy | Full Support |
Optional Communication adapters | • EtherNet/IP • ControlNet • DeviceNet • Data Highway Plus • Remote I/O • SynchLink • Third-party process and device networks |
Built-in communication | 1 USB port |
Event Task | All Triggers |
Programs per task | 100 Programs |
No. of task | 32 |
Non-volatile memory | 1GB (ships with the controlelr) |
Product Type | Programmable Automation Controller |
Brand | Allen-Bradley |
Module Type | Processor Module |
Part Number/Catalog No. | 1756-L71 |
Maximum I-O | 128000 |
Maximum Analog I-O | 4000 |
I-O Memory | 0.98 MB |
User Memory | 2 MB |
Maximum Digital I-O | 128,000 |
Current Draw (1.2 Volts DC) | 5 milliamps |
Current Draw (5.1 Volts) | 800 milliamps |
Power Dissipation | 2.5 Watts |
Thermal Dissipation | 8.5 BTU per hour |
Isolation Voltage | 30 Volts Continuous |
Enclosure | None |
Communication | DeviceNet, ControlNet, EtherNet/IP, Remote I/O |
UPC | 10612598876010 |
UNSPSC | 32151705 |
About 1756-L71
This controller is part of the modern Logix controller platform which are classified as Programmable Automation Controller (PAC). This PAC product range is ideally used for medium to large automation requirements, particularly compatible in control requirements of Factory and Process Automation industries.
The 1756-L71 mainly feature 2MB user memory and 0.98 MB I/O memory. It is also shipped with a 1784-SD1 Secure Digital (SD) memory card amounting to 1 GB non-volatile memory which can be upgraded to 2GB by replacing with 1784-SD2 card. This controller can handle up to 128,000 Discrete input and output signals and 4000 Analog Input and output signals as well.
Being a modern controller, the 1756-L71 does not use battery to retain the contents of the Random Access Memory (RAM) or volatile memory instead, it is equipped with energy storage modules with catalog number 756-ESMCAP or 1756-ESMCAPK. This energy storage module is of removable type which is capacitor based.
For industrial communication, the 1756-L71 supports installation of communication adapters. Other supported communication protocols by the 1756-L71 are EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SynchLink, Third-party process and device networks.
This controller is a chassis based controller. Which means a specific ControlLogix chassis must be installed in order to mount the module. Compatible chassis include 1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K,1756-A17, 1756-A17 K.
FAQ for 1756-L71
Where can I send the 1756-L71 to be repaired?
we offers a variety of repair services for the 1756-L71.
What type of memory does the 1756-L71 have?
The 1756-L71 has a user memory of 2 MB and an I-O Memory of 0.98?
What is this module’s power dissipation?
The 1756-L71 has a dissipation of around 2.5 Watts.
What kind of enclosure does the 1756-L71 require?
The 1756-L71 does not require an enclosure.
What is the SD slot for on the 1756-L71
The memory card enables the user to keep a copy of the project on the controller without the need to maintain power to the controller. The memory card can be used to store the contents of the user memory when project is stored.
Do the 1756-L71 Controllers use battery to retain program?
Instead of batteries, the Logix 5570 family (including 1756-L71) uses Energy Storage Modules (ESM). The ESM allows this unit to save the program to the onboard nonvolatile storage (NVS) memory of the controller even after power is turned off to the rack or the controller is taken out of a powered on rack.
Does the 1756-L71 provided with embedded Ethernet I/P port?
No. It only has 1 USB port, however, Ethernet port may be added via optional communication adapters.
What is the size of the embedded user memory of this controller?
The 1756-L71 has 2 MB user memory, 0.98 I/O memory and 1 GB non-volatile memory.
Can I mount this controller to a DIN rail?
No. This controller requires a ControlLogix chassis to mount.