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Description
The Allen-Bradley 1756-DHRIO is a ControlLogix communication interface module that supports Data Highway Plus (DH+) and Remote I/O (RIO) protocols. It facilitates information exchange among various devices such as PLCs, SLCs, and ControlLogix controllers across different networks.
Key Features:
- Dual Channels:
- Two channels with selectable communication speeds of 57.6 Kbps, 115.2 Kbps, or 230.4 Kbps (depending on cable length).
- Communication Protocols:
- Remote I/O (RIO): Supports communication with remote I/O devices.
- Data Highway Plus (DH+): Messaging between compatible devices.
- CIP Messaging: For Control and Information Protocol communication.
- Connection Capabilities:
- Up to 32 Logix connections.
- Functions as an adapter or scanner for RIO networks, transferring data types such as analog, digital, block, and specialty data without requiring message instructions.
- Network Configuration:
- Daisy-chain topology for DH+ and RIO networks.
- Requires terminating resistors at the first and last nodes, with values depending on network speed:
- 82 Ohms for 230.4 Kbps.
- 150 Ohms for 57.6 Kbps and 115.2 Kbps.
- Uses Belden 89463 twinaxial cable with specific wiring for RIO and DH+ protocols.
- Hot-Swappable:
- Modules can be installed or removed with chassis power applied (in nonhazardous environments and with proper precautions).
- Compatibility:
- Compatible with Flex IO, POINT IO systems, and messaging functions for PLC 5, SLC, CompactLogix, and ControlLogix controllers.
- Safety Considerations:
- Static discharge precautions must be observed to protect the module from electrostatic damage.
Technical Specifications
| Attribute | Details |
|---|---|
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Catalog Number | 1756-DHRIO |
| Series | ControlLogix |
| Module Type | Data Highway/Remote I/O Communication Module |
| Chassis Location | 1756 ControlLogix Chassis |
| Communication Speeds | 57.6 Kbps, 115.2 Kbps, 230.4 Kbps |
| Maximum Cable Length | 3048 m (10,000 ft), 1524 m (5,000 ft), 762 m (2,500 ft) |
| Recommended Cable | Belden 89463 twinaxial, 0.52 mm² (20 AWG), rated at 200 °C (392 °F) |
| Backplane Current (5V) | 1.7 mA |
| Backplane Current (24V) | 850 mA |
| Power Dissipation (Max) | 4.5 Watts |
| Thermal Dissipation (Max) | 15.4 BTU/hour |
| Enclosure Type | Open |
| Operating Temperature Range | 0–60 °C (32–140 °F) |
| Slot Width | 1 |
| Weight | 0.64 pounds (0.293 kilograms) |
| Spare Connector Kit | Phoenix MVSTBR2.5/3-ST BK AU |
Revisions
| Revision Part Number | Alternate Names |
|---|---|
| 1756-DHRIO Ser A | 1756-DHRIO/A, Series A, Rev A |
| 1756-DHRIO Ser B | 1756-DHRIO/B, Series B, Rev B |
| 1756-DHRIO Ser C | 1756-DHRIO/C, Series C, Rev C |
| 1756-DHRIO Ser D | 1756-DHRIO/D, Series D, Rev D |
| 1756-DHRIO Ser E | 1756-DHRIO/E, Series E, Rev E |
Installation and Wiring Guidelines
- Network Termination:
- Install terminating resistors based on network speed across Line 1 and Line 2.
- For RIO:
- Line 1 connects to the bottom pin (Terminal 1).
- Shield cable connects to the middle pin.
- Line 2 connects to the last pin.
- For DH+:
- Reverse the connections of Line 1 and Line 2.
- Power and Chassis Requirements:
- Install and connect a ControlLogix power supply and chassis before installing the module.
- Ensure power requirements are met for multiple module installations in the same chassis.
- Static Discharge Protection:
- Discharge any static before handling the module to avoid damage.
Applications
The 1756-DHRIO is ideal for industrial automation and communication tasks, supporting various network types and enabling reliable data exchange between devices across different systems and protocols.
About Us
Meloauto – Your Trusted Supplier for Original, Brand-New PLC and DCS Parts Meloauto offer a vast selection of products from globally recognized brands, including Allen Bradley, Bently Nevada, Honeywell, ABB, GE Fanuc, Siemens, Invensys Triconex, ICS Triplex, Foxboro, Yokogawa, Schneider, and Hima, among others. With tens of thousands of new parts ready to ship, Meloauto has successfully served customers across over 50 countries worldwide. We focus on supplying discontinued and hard-to-find items, ensuring each product is in brand-new, original condition.Contact Us
- Phone: +86-15915488782
- Email: [email protected]
- WhatsApp: +8615915488782
- Business Hours: 24/7 service
- Address: Unit 601, Powerlong International Center, No. 1599 Luling Road, Siming District, Xiamen City, Fujian, China
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