The Allen-Bradley 1785-LT is a legacy PLC-5 programmable logic controller processor designed for demanding industrial automation and discrete control applications. As part of the highly reliable PLC-5 family, this controller provides robust processing performance, deterministic I/O scan execution, and versatile communication capabilities well-suited for medium-scale legacy architectures and migration planning.
This processor supports the installation of up to four local racks, including the resident rack. It features built-in communication interfaces designed to integrate seamlessly with wider plant networks, supporting legacy architectures and distributed control strategies without requiring complex auxiliary hardware.
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Type | PLC-5 Processor Module |
| Catalog Number | 1785-LT |
| Product Family | PLC-5 |
| User Memory | 6 kilowords SRAM (expandable to 14 kilowords) |
| Maximum Local Racks | 4 racks (including resident rack) |
| Maximum I/O Capacity | 3,072 total mixed I/O or 3,072 inputs / 3,072 outputs complementary |
| Communication Ports | 1 x Data Highway Plus (DH+), 1 x Remote I/O (RIO), 1 x RS-232-C/422-A/423-A Serial |
| I/O Scan Time (Per Rack) | 10 ms at 57.6 kbits/s; 7 ms at 115.2 kbits/s; 3 ms at 230.4 kbits/s |
| Country of Origin | United States |
The 1785-LT processor is equipped with multiple physical communication interfaces. The Data Highway Plus (DH+) port allows simultaneous communication with programming terminals, human-machine interfaces (HMIs), and supervisory control systems. The dedicated Remote I/O (RIO) port handles communication with remote chassis drops, while the serial port accommodates general ASCII devices, modems, or alternative programming links.
Install the 1785-LT processor into the designated primary slot (slot 0) of the compatible PLC-5 chassis. Ensure the chassis power supply is powered off before inserting or removing the module. Verify that backplane connectors are clean and undamaged. Configure communication addresses and memory switches in accordance with system software requirements prior to initial commissioning.
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Returns & Warranty
Manufacturer: Allen-Bradley
Product No.: 1785-LT
Country of origin:United States
Product Type: PLC Processors
Payment: T/T, Western Union
Weight: 1000g
Shipping port: Xiamen
Warranty: 12 months
The Allen-Bradley 1785-LT is a legacy PLC-5 programmable logic controller processor designed for demanding industrial automation and discrete control applications. As part of the highly reliable PLC-5 family, this controller provides robust processing performance, deterministic I/O scan execution, and versatile communication capabilities well-suited for medium-scale legacy architectures and migration planning.
This processor supports the installation of up to four local racks, including the resident rack. It features built-in communication interfaces designed to integrate seamlessly with wider plant networks, supporting legacy architectures and distributed control strategies without requiring complex auxiliary hardware.
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Type | PLC-5 Processor Module |
| Catalog Number | 1785-LT |
| Product Family | PLC-5 |
| User Memory | 6 kilowords SRAM (expandable to 14 kilowords) |
| Maximum Local Racks | 4 racks (including resident rack) |
| Maximum I/O Capacity | 3,072 total mixed I/O or 3,072 inputs / 3,072 outputs complementary |
| Communication Ports | 1 x Data Highway Plus (DH+), 1 x Remote I/O (RIO), 1 x RS-232-C/422-A/423-A Serial |
| I/O Scan Time (Per Rack) | 10 ms at 57.6 kbits/s; 7 ms at 115.2 kbits/s; 3 ms at 230.4 kbits/s |
| Country of Origin | United States |
The 1785-LT processor is equipped with multiple physical communication interfaces. The Data Highway Plus (DH+) port allows simultaneous communication with programming terminals, human-machine interfaces (HMIs), and supervisory control systems. The dedicated Remote I/O (RIO) port handles communication with remote chassis drops, while the serial port accommodates general ASCII devices, modems, or alternative programming links.
Install the 1785-LT processor into the designated primary slot (slot 0) of the compatible PLC-5 chassis. Ensure the chassis power supply is powered off before inserting or removing the module. Verify that backplane connectors are clean and undamaged. Configure communication addresses and memory switches in accordance with system software requirements prior to initial commissioning.
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Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|
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