Allen-Bradley 1768-L43 PLC Processors
The 1768-L43 is a CompactLogix L43 Programmable Automation Controller (PAC) engineered by Allen-Bradley for mid-sized industrial automation applications requiring integrated control and multi-protocol networking. Featuring 2.0 MB of onboard user memory and support for up to 16 task configurations, the processor executes complex logic and data manipulation over an isolated internal system bus.
Memory Allocation and System Processing
Equipped with 2.0 MB of user memory, the 1768-L43 coordinates real-time control across up to 16 local 1769 Compact I/O expansion modules. Program execution supports standard Logix programming environments, including ladder logic, structured text, function block diagrams, and sequential function charts. The module features an isolated RS-232 serial communication port supporting DF1 or ASCII protocols for direct connections to programming terminals, human-machine interfaces (HMIs), or serial field equipment.
Modular Expansion and System Architecture
The 1768 system architecture utilizes high-speed 1768 expansion modules alongside standard 1769 I/O banks. The 1768-L43 processor supports option modules attached to its left side for expanded network connectivity, including EtherNet/IP (such as the 1768-ENBT), ControlNet (such as the 1768-CNB), and DeviceNet modules.
The unit operates on system power supplied by a dedicated 1768 power supply module (such as the 1768-PA3 or 1768-PB3), with a total module power consumption of 31.1 W and maximum thermal dissipation of 6.3 W. It mounts onto standard DIN rail or panel surfaces within an industrial enclosure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1768-L43 |
| Brand | Allen-Bradley |
| Product Family | CompactLogix |
| Product Type | Processor Module |
| User Memory | 2 MB |
| Maximum Configured Tasks | 16 tasks |
| Local I/O Capacity | Up to 16 x 1769 Compact I/O modules |
| Serial Communication Port | 1 x RS-232 (DF1 or ASCII) |
| Communication Protocols Supported | EtherNet/IP, ControlNet, DeviceNet (via 1768 modules) |
| Isolation Voltage | 30 V (continuous) |
| Power Consumption | 31.1 W |
| Power Dissipation | 6.3 W |
| Mounting Style | DIN Rail / Panel Mount |
| Weight | 0.34 kg (0.75 lbs) |
Frequently Asked Questions
Q: What power supply options are required to operate the 1768-L43 processor? A: The 1768-L43 processor requires a 1768-series power supply module, such as the 1768-PA3 (AC power) or 1768-PB3 (DC power), installed directly adjacent to the controller.
Q: How many local I/O modules can the 1768-L43 processor support? A: The controller supports up to 16 local 1769 Compact I/O modules distributed across valid system expansion banks.
Q: What network protocols can be added to the 1768-L43? A: Additional communication capabilities including EtherNet/IP, ControlNet, and DeviceNet can be integrated by adding compatible 1768 network bridge modules to the left side of the processor.
Allen-Bradley 1768-L43 PLC Processors
Allen-Bradley 1768-L43 PLC Processors
The 1768-L43 is a CompactLogix L43 Programmable Automation Controller (PAC) engineered by Allen-Bradley for mid-sized industrial automation applications requiring integrated control and multi-protocol networking. Featuring 2.0 MB of onboard user memory and support for up to 16 task configurations, the processor executes complex logic and data manipulation over an isolated internal system bus.
Memory Allocation and System Processing
Equipped with 2.0 MB of user memory, the 1768-L43 coordinates real-time control across up to 16 local 1769 Compact I/O expansion modules. Program execution supports standard Logix programming environments, including ladder logic, structured text, function block diagrams, and sequential function charts. The module features an isolated RS-232 serial communication port supporting DF1 or ASCII protocols for direct connections to programming terminals, human-machine interfaces (HMIs), or serial field equipment.
Modular Expansion and System Architecture
The 1768 system architecture utilizes high-speed 1768 expansion modules alongside standard 1769 I/O banks. The 1768-L43 processor supports option modules attached to its left side for expanded network connectivity, including EtherNet/IP (such as the 1768-ENBT), ControlNet (such as the 1768-CNB), and DeviceNet modules.
The unit operates on system power supplied by a dedicated 1768 power supply module (such as the 1768-PA3 or 1768-PB3), with a total module power consumption of 31.1 W and maximum thermal dissipation of 6.3 W. It mounts onto standard DIN rail or panel surfaces within an industrial enclosure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1768-L43 |
| Brand | Allen-Bradley |
| Product Family | CompactLogix |
| Product Type | Processor Module |
| User Memory | 2 MB |
| Maximum Configured Tasks | 16 tasks |
| Local I/O Capacity | Up to 16 x 1769 Compact I/O modules |
| Serial Communication Port | 1 x RS-232 (DF1 or ASCII) |
| Communication Protocols Supported | EtherNet/IP, ControlNet, DeviceNet (via 1768 modules) |
| Isolation Voltage | 30 V (continuous) |
| Power Consumption | 31.1 W |
| Power Dissipation | 6.3 W |
| Mounting Style | DIN Rail / Panel Mount |
| Weight | 0.34 kg (0.75 lbs) |
Frequently Asked Questions
Q: What power supply options are required to operate the 1768-L43 processor? A: The 1768-L43 processor requires a 1768-series power supply module, such as the 1768-PA3 (AC power) or 1768-PB3 (DC power), installed directly adjacent to the controller.
Q: How many local I/O modules can the 1768-L43 processor support? A: The controller supports up to 16 local 1769 Compact I/O modules distributed across valid system expansion banks.
Q: What network protocols can be added to the 1768-L43? A: Additional communication capabilities including EtherNet/IP, ControlNet, and DeviceNet can be integrated by adding compatible 1768 network bridge modules to the left side of the processor.
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