ControlLogix Controllers
1756 ControlLogix Controllers
|
The ControlLogix controller provides a scalable controller solution that is capable of addressing a large amount of I/O points.
The ControlLogix controller can be placed into any slot of a ControlLogix I/O chassis and multiple controllers can be installed in the same chassis. Multiple controllers in the same chassis communicate with each other over the backplane (just as controllers can communicate over networks) but operate independently.
ControlLogix controllers can monitor and control I/O across the ControlLogix backplane, as well as over I/O links. ControlLogix controllers can communicate with computers or other processors across RS-232-C (DF1/DH-485 protocol), DeviceNet, DH+, ControlNet, and EtherNet/IP networks. To provide communication for a ControlLogix controller, install the appropriate communication interface module into the chassis.
The multitasking operating system supports 32 configurable tasks that can be prioritized. One task can be continuous. The others must be periodic or event tasks. Each task can have as many as 100 programs, each with its own local data and logic, allowing virtual machines to operate independently within the same controller.
| Specification | Description |
| Battery | 1756-BA1 for series A controllers 1756-BA2 for 1756-L6x, series B controllers 1756-BATM (contains a 1756-BATA battery assembly) for series A controllers |
| Programming cable | 1756-CP3 or 1747-CP3 serial cable |
| Certifications: UL, CSA (Class I, Division 2, Group A, B, C, D), CE, FM (1756-L6x controllers only), C-Tick, EEx ATEX | |
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.
Controller Memory Use
The following equations provide an estimate of the memory needed for a controller.
| Controller Tasks | _____ * 4000 | = | _____ bytes (minimum 1 task) |
| Digital I/O points | _____ * 400 | = | _____ bytes |
| Analog I/O points | _____ * 2600 | = | _____ bytes |
| Communication modules¬ | _____ * 2000 | = | _____ bytes |
| Motion axes | _____ * 8000 | = | _____ bytes |
| ¬ When estimating memory use by communication modules, count all the communication modules in the system, not just those in the local chassis. This includes device connection modules, adapter modules, and ports on PanelView terminals. | |||
Additional 1756-L55 Memory
The 1756-L55 controllers do not operate standalone. Choose one of these memory boards to come already assembled with the controller. You can also order additional memory boards either for spare parts or to upgrade existing 1756-L55 controllers.
The 1756-L6x controllers have a fixed RAM size and do not use a memory board. Use a CompactFlash card for nonvolatile storage.
| Catalog Number | Supported Controller | Battery-backed Static RAM | Nonvolatile RAM |
| 1756-M12¬ | 1756-L55 | 750 KB | None |
| 1756-M13 | 1756-L55 | 1.5 MB | None |
| 1756-M14 | 1756-L55 | 3.5 MB | None |
| 1756-M16 | 1756-L55 | 7.5 MB 3.5 MB for tag data |
None |
| 1756-M22¬ | 1756-L55 | 750 KB | 750 KB |
| 1756-M23T | 1756-L55 | 1.5 MB | 1.5 MB |
| 1756-M24T | 1756-L55 | 3.5 MB | 3.5 MB |
| 1784-CF64 | 1756-L6x‡ | None RAM contents are written to internal Flash during power down |
Same as the memory limit for the controller |
| ¬ The 1756-L55 controller must have firmware revision 10 or later. T The 1756-L55 controller must have firmware revision 8 or later. ‡ You can use CompactFlash with the 1756-L61, 1756-L62, 1756-L63, and 1756-L60M03SE controllers. The 1756-L61, 1756-L62 controllers require firmware revision 12 or later. The 1756-L63 controller requires firmware revision 11 or later. The 1756-L60M03SE controller requires firmware revision 13 or later. |
|||
CompactFlash Memory
The CompactFlash card offers nonvolatile memory (flash) to permanently store a user program and tag data on a controller.
- 1784-CF64 has 64 MB of memory.
- 1784-CF128 has 128 MB of memory.
The 1756-L55M2x controllers have fixed internal nonvolatile memory.
The 1756-L6x controllers support a removable CompactFlash card for nonvolatile memory. You install the 1784-CF64 card in a socket on the controller. The CompactFlash card stores the user program, tag data, and controller firmware. This lets you upgrade firmware on a 1756-L6x controllers without using RSLogix 5000 software or ControlFlash software.
Battery Requirements
Each controller ships with a battery.
| Cat. No. | Description | Estimated Worst Case Battery Life |
| 1756-BA1 | Lithium battery (0.59 g) installed in each ControlLogix controller. Order only if you need a replacement. |
Estimate @ 25 °C (77 °F) • 1756-L55M12: 63 days • 1756-L55M13: 63 days • 1756-L55M14: 30 days • 1756-L55M16: 13 days • 1756-L55M22: 63 days • 1756-L55M23: 63 days • 1756-L55M44: 30 days • Series A 1756-L6x: 21 days • 1756-L60M03SE: 21 days |
| 1756-BATM | Externally mounted battery assembly. Provides longer battery life than the 1756-BA1. Contains: • One 1756-BATA assembly • 1 m (3.28 ft) cable to connect housing to controller |
Estimate @ 25 °C (77 °F) • 1756-L55M12: 299 days • 1756-L55M13: 299 days • 1756-L55M14: 213 days • 1756-L55M16: 133 days • 1756-L55M22: 299 days • 1756-L55M23: 299 days • 1756-L55M24: 213 days • Series A 1756-L6x: 146 days |
| 1756-BATA | Lithium battery assembly (maximum of 5 g lithium per each D cell; assembly contains 2 D cells) included with the 1756-BATM. Order only if you need a replacement. |
|
| 1756-BA2 | Lithium battery (0.59 g) installed in each 1756-L6x series B controller. Order only if you need a replacement. |
Estimate @ 60 °C (140 °F) • Series B 1756-L6x: 8 months |
The 1756-BATM battery module is recommended for use with all 1756-L55 and series A 1756-L6x controllers.
| Controller | 1756-BATM | 1756-BATA | 1756-BA1 | 1756-BA2 |
| 1756-L55M12 | Recommended | For a replacement | For a replacement | Not supported |
| 1756-L55M13 | Recommended | For a replacement | For a replacement | Not supported |
| 1756-L55M14 | Highly recommended | For a replacement | For a replacement | Not supported |
| 1756-L55M16 | Highly recommended | For a replacement | Not recommended for long-term use | Not supported |
| 1756-L55M22¬ | Recommended | For a replacement | For a replacement | Not supported |
| 1756-L55M23¬ | Recommended | For a replacement | For a replacement | Not supported |
| 1756-L55M24¬ | Highly recommended | For a replacement | Not recommended for long-term use | Not supported |
| 1756-L60M03SE | Highly recommended | For a replacement | For a replacement | Not supported |
| 1756-L61T | Highly recommended Series A only |
For a replacement Series A only |
Series A only | Series B only |
| 1756-L61S | Not supported | Not supported | Not supported | Only battery supported |
| 1756-L62T | Highly recommended Series A only |
For a replacement Series A only |
Series A only | Series B only |
| 1756-L62S | Not supported | Not supported | Not supported | Only battery supported |
| 1756-L63T | Highly recommended Series A only |
For a replacement Series A only |
Series A only | Series B only |
| 1756-L64 | Not supported | Not supported | Not supported | Only battery supported |
| 1756-LSP Safety partner | Not supported | Not supported | Not supported | Only battery supported |
| ¬ These controllers have nonvolatile memory and can be used without a battery. T The 1756-L6x controllers have nonvolatile memory if you install a 1784-CF64 CompactFlash card. With nonvolatile memory, the controller can be used without a battery. If you do not use a battery, current tag data will be at the state they were when the nonvolatile memory was saved. |
||||
Compatibility
Control Distributed I/O Modules
The ControlLogix controller can control these distributed I/O modules using the I/O Configuration tree in RSLogix 5000 programming software.
| I/O Modules | EtherNet/IP | ControlNet | DeviceNet | Remote I/O |
| 1732 ArmorBlock I/O | Yes | No | Yes | No |
| 1734 POINT I/O | Yes | Yes | Yes | No |
| 1734D POINTBlock I/O | No | No | Yes | No |
| 1738 ArmorPoint I/O | Yes | Yes | Yes | No |
| 1746 SLC I/O | No | No | No | Yes |
| 1756 ControlLogix I/O | Yes | Yes | No | No |
| 1769 Compact I/O | No | No | Yes | No |
| 1771 Universal I/O | No | YesT | No | Yes |
| 1790 CompactBlock LDX I/O | No | No | Yes | No |
| 1791D CompactBlock I/O | No | No | Yes | No |
| 1792D ArmorBlock MaXum I/O | No | No | Yes | No |
| 1794 FLEX I/O | Yes | Yes | Yes | Yes |
| 1797 FLEX Ex I/O | No | Yes | No | No |
| 1798 FLEX Armor I/O | No | No | Yes | No |
| 1799 Embedded I/O | No | No | Yes | No |
| ¬ Requires RSLogix 5000 programming software version 11 or later. Use the generic FLEX profile. T Use a 1771-ACN15, 1771-ACNR15 adapter module. Version 10 and later of RSLogix 5000 Enterprise Series software supports 1771 digital, analog, and specialty I/O modules. Previous versions of the software support only 1771 digital I/O modules. |
||||
Communicate with Display Devices
The ControlLogix controller can communicate with these display devices.
| Display Devices | EtherNet/IP | ControlNet | DeviceNet | DH+ | Remote I/O | RS-232 (DF1) | DH-485 |
| 2711P PanelView Plus terminal | Yes | Yes | Yes | Yes | Yes | Yes | No¬ |
| 6182H VersaView CE computer | Yes | Yes | Yes | Yes | Yes | Yes | No¬ |
| 2711 PanelView terminal | Yes | Yes | Yes | YesT | Yes | YesT | YesT |
| 2711 e PanelView terminal | No | Yes | No | YesT | Yes | No | No |
| 800E, 800T RediSTATION/RediPANEL operator module | No | No | Yes | No | Yes | No | No |
| 2706 InView message display | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| 2706 DL40 Dataliner message display | No | No | No | No | Yes | Yes | No |
| 2706 DL, DL50 DataLiner message display | No | No | No | No | No | Yes | No |
| 2707 DTAM Plus operator interface | No | No | Yes | No | Yes | YesT | YesT |
| ¬ These devices support DH-485 communication to FlexLogix and CompactLogix controllers. T Use PLC/SLC mapping. |
|||||||
Communicate with Other Controllers
The ControlLogix controller can communicate with these controllers.
| Controller | EtherNet/IP | ControlNet | DeviceNet | DH+ | RS-232 (DF1) | DH-485§ |
| 1756 ControlLogix 1756 GuardLogix |
Yes | Yes | Yes | Yes | Yes | Yes |
| 1768, 1769 CompactLogix | Yes | Yes | Yes | No | Yes | Yes |
| 1789 SoftLogix5800 | Yes | Yes | Yes | No | Yes | No |
| 1794 FlexLogix | Yes | Yes | Yes | No | Yes | Yes |
| 5720 PowerFlex 700S with DriveLogix | Yes | Yes | Yes | No | Yes | Yes |
| 1785 PLC-5 | Yes¬ T | Yes | Yes‡ | Yes | Yes | N/A |
| 1747 SLC | Yes§ | Yes | Yes‡ | Yes§ | Yes | Yes |
| 1761 MicroLogix | Yes | No | Yes‡ | No | Yes | Yes |
| 1762 MicroLogix | Yes | No | Yes‡ | No | Yes | Yes |
| 1763 MicroLogix | Yes | No | Yes‡ | No | Yes | Yes |
| 1764 MicroLogix | Yes | No | Yes‡ | No | Yes | Yes |
| 1772 PLC-2 | N/A | N/A | N/A | YesØ | Yesz | N/A |
| 1775 PLC-3 | N/A | N/A | N/A | Yesª | Yesv | N/A |
| 5250 PLC-5/250 | N/A | N/A | No | Yes | Yes | N/A |
| ¬ The Ethernet PLC-5 controller must be series C, firmware revision N.1 or later; series D, firmware revision E.1 or later; or series E, firmware revision D.1 or later. T The 1785-ENET Ethernet communication interface module must be series A, firmware revision D or later. ‡ The PLC-5, SLC, and MicroLogix processors appear as I/O points to the Logix controller. Use the appropriate DeviceNet interface for the controller. § Use a 1747-L55x controller with OS501 or greater. Ø The PLC-2 controller requires a 1785-KA module for DH+ communications. z The PLC-2 controller requires a 1771-KG module for serial (DF1) communications. ª The PLC-3 controller requires a 1775-S5 module for DH+ communications. v The PLC-3 controller requires a 1775-KA module for serial (DF1) communications. § The 1756-DH485 module supports full DH-485 functionality. |
||||||
Communicate with Other Communication Devices
The ControlLogix controller can communicate with these communication devices.
| Communication Device | EtherNet/IP | ControlNet | DeviceNet | DH+ | RS-232 (DF1) | DH-485 |
| 1770-KFD | N/A | N/A | Yes | N/A | N/A | N/A |
| 9355 RSLinx software | Yes | Yes | No | Yes | Yes | No |
| 1784-KTC, 1784-KTCx, 1784-KTCx15, 1784-PCIC(S), 1784-PCC | N/A | Yes | N/A | N/A | N/A | N/A |
| 1784-PCIDS, 1784-PCD | N/A | N/A | Yes | N/A | N/A | N/A |
| 1784-KTX, 1784-KTXD, 1784-PCMK | N/A | N/A | N/A | Yes | N/A | N/A |
| 1788-CN2DN | N/A | Yes | Yes | N/A | N/A | N/A |
| 1788-EN2DN | Yes | N/A | Yes | N/A | N/A | N/A |
| 1788-CN2FF | N/A | Yes | N/A | N/A | N/A | N/A |
| 1203-CN1 ControlNet module | N/A | Yes¬ | N/A | N/A | N/A | N/A |
| 1203-FM1/FB1 SCANport | N/A | YesT | N/A | N/A | N/A | N/A |
| ¬ Use the generic module configuration to configure the 1203-CN1 module and a CIP generic MSG instruction to communicate with the module. T Use a CIP generic MSG instruction to communicate with the 1203-FM1 SCANport module on a DIN rail that is remote to the controller. The remote DIN rail also requires a 1794-ACN(R)15 ControlNet adapter module. |
||||||