PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1747-DCM is a Direct Communication Module designed for the SLC 500 platform. It enables an SLC 500 controller to act as an adapter on a Remote I/O network. This unit transfers data between supervisory scanners and distributed SLC 500 processors. It occupies one slot in any fixed or modular SLC 500 chassis. Internal circuits draw 360 mA at 5V DC from the backplane.
Front panel indicators include FAULT and COMM LEDs for immediate status diagnostics. The assembly features a 6-pin Phoenix connector port wired with Belden 9463 cable. Two onboard DIP switch banks provide direct network addressing and configuration settings. Supported transmission speeds include 57.6k, 115.2k, and 230.4k baud. Operating temperatures range from 0°C to 60°C with non-condensing relative humidity from 5% to 95%.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Category | PLCs |
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| Product Line | SLC 500 |
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| Weight | 1.31 lbs (0.60 kg) |
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| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
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| Module Type | Direct Communication Module (DCM) |
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| Supported Protocol | Remote I/O (RIO) |
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| Transmission rate | 57.6K baud at 10,000 ft; 115.2K baud at cable length of 5000 feet |
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| Communication cable | Belden 9463 or any equivalent |
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| Terminating resistor | 82 Ohms; 150 Ohms |
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| Compatible controllers | SLC 500 Fixed and Modular style |
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| Operation modes | Standard and non-extended node |
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| LED indicators | FAULT; COMM |
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| Backplane Current | 360 mA @ 5VDC |
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| Communication Port | Universal Remote I/O Adapter |
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| Backplane Current (5 Volts) | 360 milliamps |
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| Cable | Belden 9463 |
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| Connectors | 6-Pin Phoenix Connector |
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| UPC | 10662073601941 |
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TECHNICAL INFORMATION
Features
- Operates as a Remote I/O adapter node within distributed SLC 500 systems.
- Draws 360 mA of backplane current at 5V DC in a single slot.
- Supports transmission speeds of 57.6k, 115.2k, and 230.4k baud.
- Provides front panel FAULT and COMM LED indicators for real-time status monitoring.
- Uses dual 8-switch DIP banks on the circuit board for network addressing.
TECHNICAL INFORMATION
Applications
- Interfacing SLC 500 modular racks to PLC-5 Remote I/O scanner networks.
- Distributed machine data exchange across Remote I/O communication links.
- Data concentration from remote SLC 500 processors to central automation hosts.
TECHNICAL INFORMATION
Connections / Interfaces
- Equipped with a 6-pin Phoenix connector interface for Remote I/O link wiring.
- Supports Belden 9463 shielded twinaxial communication cable.
- Requires terminating resistors of 82 Ohms or 150 Ohms depending on network baud rate.
- Provides two onboard DIP switch banks with 8 switches each for configuration.
TECHNICAL INFORMATION
Installation Guidelines
- Insert the module into any available slot in an SLC 500 chassis.
- Disconnect all backplane power before inserting or removing the module.
- Configure node address and baud rate switches prior to hardware installation.
- Install terminating resistors at the physical start and end nodes of the link.
TECHNICAL INFORMATION
Configuration Guidelines
- Set the dual 8-position DIP switch banks to match the supervisory scanner configuration.
- Select standard or extended node operation based on system addressing requirements.
- Match communication baud rate settings to all other nodes on the Remote I/O network.
TECHNICAL INFORMATION
Compatibility
- Compatible with SLC 500 Fixed and Modular style programmable logic controllers.
- Interoperates with PLC-5 and SLC Remote I/O scanner modules.
- Connects across Allen-Bradley Remote I/O networks using Belden 9463 cable.
TECHNICAL INFORMATION
Compliance and Certifications
- CSA certified
- NEMA ICS 2-230
- EN 50081-2 Class A
- IEC 1000-4-2
- IEC 1000-4-3
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with SLC 500 Fixed and Modular style programmable logic controllers. Interoperates with PLC-5 and SLC Remote I/O scanner modules. Connects across Allen-Bradley Remote I/O networks using Belden 9463 cable.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the primary function of the Allen-Bradley 1747-DCM module?
The 1747-DCM allows an SLC 500 processor to function as an adapter on a Remote I/O network.
How much backplane current does the 1747-DCM consume?
The 1747-DCM draws 360 mA at 5V DC from the SLC 500 backplane.
What communication cable is required for the 1747-DCM?
The module connects to the network using standard Belden 9463 shielded twinaxial cable.
What is the market reference price for the 1747-DCM?
Observed market reference pricing is approximately $79.00 USD. This figure is an indicative reference price only, not a final quotation.
