Loop checking is a vital pre-commissioning process in industrial automation that verifies signal integrity between field instruments and control systems like PLCs or DCS. It ensures accurate wiring, calibration, and control logic before startup, reducing downtime and improving plant reliability and safety.
Product Details
Product Description
The Allen-Bradley 1771-DB is a PLC-5 communication module designed to provide BASIC and C programming capabilities within the PLC-5 system architecture. It supports multiple serial communication protocols and integrates with the PLC processor through block-transfer operations. This module is conformally coated for durability and is suitable for industrial environments requiring flexible communication options.
Technical Specifications
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Manufacturer Allen-Bradley
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Product Line PLC-5
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Category PLC Communication Modules
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Part Number 1771-DB
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Weight 1.63 lbs (0.74 kg)
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Module Type Communication Module
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Description PLC BASIC Module
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Communication Protocols RS-232-C, RS-422-A, RS-485, DH-485
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Supported Operations BASIC programs and C programs
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Processor Communication Block-transfer with PLC-5 processor
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Wiring Arm 1771-WN
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Module Scan Time 1.3–5 ms
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Storage Temperature –40 to 185 °F (–40 to 85 °C)
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Protective Coating Conformal coat
Application Scenarios
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Integration of PLC-5 systems with external devices via RS-232, RS-422, or RS-485
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Industrial automation requiring BASIC or C program execution within PLC hardware
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Environments needing conformal-coated modules for extended durability
FAQ
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Q: What programming languages are supported? A: BASIC and C programs can be executed directly on the module.
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Q: How does the module communicate with the PLC processor? A: Through block-transfer operations with the PLC-5 processor.
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Q: Which wiring arm is compatible? A: The 1771-WN wiring arm.
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
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