Product Details
Overview:
The 1785-L11B is a PLC-5/11 series processor from Allen-Bradley, designed for mid-range automation tasks. It provides network connectivity via the 1785-ENET module and supports flexible I/O expansion for industrial applications.
Technical Specifications:
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Model: 1785-L11B
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Series: PLC-5
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Processor Type: PLC-5/11 Standard Processor
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User Memory: 8 K words, battery-backed static RAM
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EEPROM Backup: Supported with 1785-ME16, ME32, ME64, ME100
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Protected Memory: No
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Maximum Total I/O: 512 points (any mix) or 384 in + 384 out (complementary)
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Maximum Analog I/O: 512 points
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I/O Scan Time per Rack: 10 ms @ 57.6 kbps, 7 ms @ 115.2 kbps, 3 ms @ 230.4 kbps
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Maximum I/O Chassis Total: 5
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Maximum Extended Local I/O Chassis: 0
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Maximum Universal Remote I/O Chassis: 4
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Communication Ports: 1 RS-232-C / 422-A / 423-A
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Expansion Ports: Control coprocessor expansion port
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Weight: 3.00 lbs (1.36 kg)
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Power Dissipation: 6.2 W
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Input Voltage: Standard PLC-5 chassis supply
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Enclosure: Rack-mounted, open-style (requires chassis)
Compatible Chassis:
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1785-A4 / A4K
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1785-A7 / A7K
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1785-A10 / A10K
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1785-A13 / A13K
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1785-A17 / A17K (Series B)
Application Scenarios:
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Mid-range automation tasks
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Process monitoring and control
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Legacy system integration
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Networked I/O with 1785-ENET
FAQ:
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Q: Can this processor support remote racks?
A: Yes, up to 4 universal remote racks are supported. -
Q: Is the user memory battery-backed?
A: Yes, 8 K words are battery-backed. -
Q: Does it support EEPROM backup?
A: Yes, compatible with 1785-ME16, ME32, ME64, ME100 modules.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.
Mastering Wire Identification in Industrial Automation: The Power of Ferrules and Cross-Ferruling
Proper wire labeling forms the cornerstone of reliable control system installation and long-term maintenance. In complex industrial automation environments, technicians terminate thousands of conductor ends inside control panels, marshalling racks, and field junction boxes. Ferrules serve as individual tube-shaped sleeve markers slipped onto conductors before final termination. While technicians historically relied on pre-printed individual letter rings, modern control panel builders utilize automated ferrule printing machines. These thermal-transfer printers generate durable, single-sleeve heat-shrink tags directly matching approved wiring schematics, significantly accelerating cabinet assembly workflows.