The ProSoft MVI56-DH485 is a DH-485 communication module for the Rockwell Automation ControlLogix platform. It provides a high-speed interface between ControlLogix processors and DH-485 networks, allowing seamless integration with legacy Rockwell Automation PLCs (such as SLC 5/03) and other DH-485 compatible end devices.
Item No :
MVI56-DH485Order(MOQ) :
1Payment :
EXWProduct Origin :
USAShipping Port :
WuhanLead Time :
3-5daysWeight :
5KGPart Number: MVI56-DH485
Product Type: DH-485 Network Communication Module
Platform: Rockwell Automation ControlLogix (1756 backplane), single-slot
Communication Ports: Two isolated application ports + one configuration/debug port
Protocol Support: DH-485 (peer-to-peer), with additional support for Modbus, DF1, and ASCII
Baud Rates: 9600 or 19200 baud
Data Exchange: 4000-word register space between processor and DH-485 network
User-Defined Commands: Up to 100 per port, configurable via ladder logic
Common Interface File (CIF): 244 words accessible by remote DH-485 nodes
Configuration: ProSoft Configuration Builder (PCB) software
Operating Temperature: 0°C to 60°C (32°F to 140°F)
| Category | Model | Key Features |
|---|---|---|
| Remote Chassis Version | MVI56-DH485R | Same functionality, designed for remote rack applications where the module is located away from the processor |
| EtherNet/IP Gateway | 1756-ENET | Rockwell Automation Ethernet communication module; alternative to DH-485 networking |
| DH+ Communication | 1756-DHRIO | Rockwell Automation DH+ / Remote I/O module; alternative for legacy DH+ networks |
| ControlNet Gateway | 1756-CNB | Rockwell Automation ControlNet bridge module |
Q1: Is the MVI56-DH485 a gateway module?
No. It is designed for data transfer between a DH-485 network and a ControlLogix processor. It requires a ControlLogix processor to function and does not act as a standalone gateway like a 1756-ENET or 1756-DHRIO module.
Q2: Can I program DH-485 devices through this module?
No. Programming of DH-485 devices is not supported through the MVI56-DH485 module. A Rockwell AIC (Advanced Interface Converter) is recommended for programming purposes.
Q3: How do I configure the MVI56-DH485?
The module is configured using ProSoft Technology's Configuration Builder (PCB) software, and a sample ladder logic program is provided for integration with ControlLogix processors.
Q4: What is the difference between MVI56-DH485 and MVI56-DH485R?
The MVI56-DH485R is designed for remote chassis applications, where the module is physically located in a different rack from the ControlLogix processor. The core functionality remains the same.
Q5: What DH-485 command types does the module support?
The module supports read and write commands for file types including status, bit, timer, counter, control, integer, float, and Common Interface File (CIF) data.
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