Catalogs > Automation Systems Catalog > Programmable Controllers > ControlLogix System > ControlLogix Controllers
ControlLogix Controllers
Available 1756 Controllers
| Cat. No. | Memory | Power Dissipation, Max. | Thermal Dissipation, Max. | Backplane Current (mA) at 5V | Backplane Current (mA) at 24V | ||
| Available User Memory (Kbytes)¬ | I/O Memory | Nonvolatile Memory | |||||
| 1756-L55M12 | 750 K bytes | 208 K bytesT | NA | 5.6 W | 19.1 BTU/hr | 1230 mA | 14 mA |
| 1756-L55M13 | 1536 K bytes | 208 K bytesT | NA | 5.6 W | 19.1 BTU/hr | 1230 mA | 14 mA |
| 1756-L55M14 | 3584 K bytes | 208 K bytesT | NA | 5.7 W | 19.4 BTU/hr | 1250 mA | 14 mA |
| 1756-L55M16 | 7680 K bytes ‡ |
208 K bytesT | NA | 6.3 W | 21.5 BTU/hr | 1480 mA | 14 mA |
| 1756-L55M22 | 750 K bytes | 208 K bytesT | 750 Kbytes | 5.6 W | 19.1 BTU/hr | 1230 mA | 14 mA |
| 1756-L55M23 | 1536 K bytes | 208 K bytesT | 1.5 Mbytes | 5.6 W | 19.1 BTU/hr | 1230 mA | 14 mA |
| 1756-L55M24 | 3584 K bytes | 208 K bytesT | 3.5 Mbytes | 5.7 W | 19.4 BTU/hr | 1250 mA | 14 mA |
| 1756-L61 | 2048 K bytes | 478 K bytesT | 64 Mbytes CompactFlash§ | 3.5 W | 11.9 BTU/hr | 1200 mA | 14 mA |
| 1756-L61S | 2048 KB Standard 1024 KB Safety |
478 KB | 64 MB CompactFlash | 3.5 W | 11.9 BTU/hr | 1200 mA | 14 mA |
| 1756-L62 | 4096 K bytes | 478 K bytesT | 64 Mbytes CompactFlash§ | 3.5 W | 11.9 BTU/hr | 1200 mA | 14 mA |
| 1756-L62S | 4096 KB Standard 1024 KB Safety |
478 KB | 64 MB CompactFlash | 3.5 W | 11.9 BTU/hr | 1200 mA | 14 mA |
| 1756-L63 | 8196 K bytes | 478 K bytesT | 64 Mbytes CompactFlash§ | 3.5 W | 11.9 BTU/hr | 1200 mA | 14 mA |
| 1756-L64 | 16,384 K bytes | 478 K bytesT | 64 Mbytes CompactFlash§ | 3.5 W | 11.9 BTU/hr | 1200 mA | 14 mA |
| 1756-L60M03SEv | 478 K bytesT | 64 Mbytes CompactFlash§ | 8.5 W | 11.9 BTU/hr | 1960 mA | 6 mA | |
| 1756-LSP | NA - Safety Partner | NA | NA | 3.5 W | 11.9 BTU/hr | 1200 mA | 14 mA |
| ¬ Data and Logic memory stores: tags other than I/O, produced, or consumed tags; logic routines; and communication with OPC/DDE tags that use RSLinx software. T I/O memory stores: I/O tags, produced tags, consumed tags, communication via Message (MSG) instructions, communication with workstations, and communication with OPC/DDE tags that use RSLinx software. ‡ No more than 3500 Kbytes of data. § Requires a 1784-CF64 Industrial CompactFlash card. v The 1756-L60M03SE is a 1756-L60 ControlLogix controller with an embedded 1756-M03SE SERCOS interface. This is a 2-slot module. |
|||||||
The 1756-L6x controller executes ladder scans almost twice as fast as the 1756-L55 controllers and executes function block, REAL data type math, and motion instructions four to five times faster than the 1756-L55 controllers.
The 1756-L60M03SE controller combines a 1756-L6x controller and a SERCOS motion module in a two-slot module. This controller is ideal for small motion systems and can control three SERCOS axes with the included interface. This controller can control as many as six axes if you add an additional motion module.
Select a Controller for a Redundant Controller System
If you are designing a redundant controller system, consider:
- redundant controller systems support one or two 1756-L55 controllers or one 1756-L6x controller in each redundant chassis.
- data is buffered in the secondary controller, so twice as much data memory space is required in the controller.
- the redundant controllers must be on a ControlNet network.
Select a Controller for a Safety System
If you are designing a safety controller system, consider:
- SIL 2 safety systems use standard ControlLogix controllers. See Using ControlLogix in SIL 2 Applications Safety Reference Manual, publication 1756-RM001.
- SIL 3 safety systems use GuardLogix controllers (1756-L61S, 1756-L62S) and the Safety Partner (1756-LSP). See GuardLogix Controllers Systems Safety Reference Manual, publication 1756-RM093.