Allen-Bradley 1785-L11B/E PLC-5 Processor Module
$123.00
$320.00
Description
Allen-Bradley 1785-L11B/E PLC-5 Processor Module
The Allen-Bradley 1785-L11B/E serves as the primary 1785-L11B PLC-5 Processor Module utilized to execute logic processing, I/O coordination, and communication management across PLC-5 controller platforms. The module provides processor control through a 1771 I/O chassis backplane with DH+, RS-232, and Remote I/O communication interfaces.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1785-L11B/E |
| Brand | Allen-Bradley |
| Origin | USA |
| Module Type | PLC-5 Processor Module |
| Product Line | PLC-5 |
| Weight | 3.00 lbs |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 2.3 A at 5 VDC backplane current |
| User Memory | 1K words battery-backed |
| Processor Type | PLC-5/11 Standard Processor |
| Communication Ports | 1 x RS-232, 1 x DH+, 1 x Remote I/O scanner |
| Maximum I/O Capacity | 512 points |
| Chassis Compatibility | 1771 I/O chassis |
| Battery Type | Lithium battery for memory retention |
| I/O Scan Time | 10 ms at 57.6 kbps, 7 ms at 115.2 kbps, 3 ms at 230.4 kbps |
| Status Indicators | Power, fault, and communication LEDs |
PLC-5 Processor Backplane and Communication Characteristics
The 1785-L11B/E processor module performs PLC-5 control execution through the 1771 chassis backplane interface. The processor manages user program execution, local and remote I/O scanning, and communication exchange through DH+, RS-232, and Remote I/O channels.
For Allen-Bradley PLC architecture, the module operation depends on backplane bus communication behavior and processor firmware compatibility. The processor supports I/O density scaling within PLC-5 system limits and maintains program storage through battery-backed memory.
The module supports legacy deterministic networks through DH+ and Remote I/O communication paths. Firmware flash compatibility and processor revision matching are required when integrating the module into existing PLC-5 configurations.
Frequently Asked Questions
Q: What communication interfaces are available on the 1785-L11B/E processor module?
A: The module provides one RS-232 serial interface, one Data Highway Plus (DH+) interface, and one Remote I/O scanner interface.
Q: How is the user program retained during power loss?
A: The processor uses battery-backed memory with a lithium battery to maintain stored user program data.
Q: What chassis is required for installation of the 1785-L11B/E?
A: The processor module is installed in a compatible 1771 I/O chassis and receives operating power through the chassis backplane.
Field Installation Guidelines
Install the 1785-L11B/E processor module into the designated 1771 I/O chassis slot and verify proper backplane connector engagement before applying system power. Confirm processor revision compatibility with connected PLC-5 modules and communication devices.
Connect DH+, RS-232, and Remote I/O wiring according to the PLC-5 installation requirements. Route communication cables separately from high-voltage power conductors and apply proper shield grounding practices to reduce electromagnetic interference.
Verify battery condition, chassis power availability, and processor status LEDs during commissioning. Confirm I/O addressing, communication configuration, and user program operation before placing the controller system into service.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
Featured
Complementary products
Express Delivery
Fast shipping for your urgent needs.
Large Inventory
Extensive stock ensures quick availability.
Premium Quality
Genuine, high-grade PLC & DCS components.
24/7 Customer Support
Reliable service for clients worldwide.