With more than 30.000 high-quality spare parts, they can be sold immediately. Our large inventory allows us to quickly meet customer needs, thereby reducing downtime and protecting production schedules. Our timely delivery time provides you with security and save money.
The 1747-DCM is an SLC 500 Direct Communication Module that allows an SLC 500 controller to appear as a remote I/O adapter to a master PLC-5 or SLC 500 controller on an Allen-Bradley Remote I/O link. This module provides a direct interface between an SLC 500 fixed or modular controller and a remote scanner, behaving as a standard remote I/O rack on the communication network.
Remote I/O Adapter
Selectable Communication Rates/span>
Flexible Rack Addressing
The module supports communication rates of 57.6K, 115.2K, and 230.4K baud and can be configured as a full, half, or quarter rack via onboard DIP switches. It facilitates high-speed data transfer between a local SLC 500 and a remote scanner, using the SLC 500 processor's input and output image tables to exchange up to 8 words of input and 8 words of output data per rack address.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Allen-Bradley 1747-DCM Direct Communication Module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Oil and Gas
Allen-Bradley provides integrated control and safety systems for upstream production and midstream pipeline monitoring. These solutions ensure high availability and robust performance in hazardous environments, supporting critical emergency shutdown (ESD) and fire and gas (F&G) applications.
Aerospace and Defense
Automated systems are deployed in aircraft component manufacturing and precision assembly processes. The technology supports high-performance motion control and rigorous data tracking required for compliance with stringent aerospace quality standards and production tolerances.
Automotive and Tire
Rockwell Automation delivers end-to-end smart manufacturing solutions for powertrain assembly and vehicle body shops. By utilizing integrated architecture, plants achieve synchronized motion control and real-time diagnostic capabilities to maximize throughput and minimize downtime.
Food and Beverage
Solutions focus on batch processing, high-speed packaging, and maintaining food safety through precise environmental control. The hardware is designed to withstand frequent washdown procedures while providing comprehensive material tracking and genealogy across the production chain.
Mining and Metals
Ruggedized control platforms manage heavy-duty equipment such as crushers, conveyors, and smelting furnaces. These systems are engineered for extreme temperatures and high-vibration conditions, optimizing energy consumption and ensuring personnel safety in deep-mine operations.
Water Wastewater Treatment
Automation technology provides centralized monitoring and distributed control for pumping stations and chemical dosing systems. The platform supports remote access and secure data logging to ensure compliance with environmental regulations and reliable municipal water distribution.
The 1747-DCM must be installed in any slot of an SLC 500 modular chassis, except for slot 0, and requires a single-slot capacity. When connecting the module to the Remote I/O link, use Belden 9463 or equivalent cable to ensure a maximum link distance of 10,000 feet at 57.6K baud. To prevent communication errors, terminate both ends of the Remote I/O link with a resistor that matches the characteristic impedance of the cable The module uses an internal optical isolation of 1500V AC to protect the SLC backplane from external line transients and ground loops.
What is the primary function of the 1747-DCM module within an SLC 500 system?
The 1747-DCM allows an SLC 500 controller to appear as a remote I/O adapter to a master PLC-5 or SLC 500 controller on an Allen-Bradley Remote I/O link.
How is the 1747-DCM module addressed by the scanner or master controller?
The module supports discrete I/O rack addressing, where it can be configured as a full, half, or quarter rack using the onboard DIP switches for the starting rack address.
What are the communication rate options for the 1747-DCM on the Remote I/O link?
The 1747-DCM supports standard Remote I/O baud rates of 57.6k, 115.2k, and 230.4k baud, which are selected via the module's DIP switch settings.
How does the 1747-DCM transfer data between the SLC 500 processor and the master controller?
It uses an image table transfer method where the SLC 500 processor writes to the output image and reads from the input image to exchange data with the master scanner.
What is the maximum distance for a Remote I/O link using the 1747-DCM module?
The maximum cable distance is 10,000 feet (3,048 meters) at 57.6k baud using Belden 9463 cable, decreasing as the communication baud rate increases.
Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, modules and cards, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
Videos
News
Applications