1. Product Overview

2. Main Features

1. Fully compliant with standard Rockwell DF1 serial communication protocol

2. Equipped with two independent isolated serial communication ports

3. Support RS-232 and RS-485 electrical interface selection

4. Each port can be independently configured as master station or slave station

5. Support full-duplex and half-duplex communication modes freely switchable

6. Built-in large-capacity register database up to 5000 words

7. Realize data interaction with SLC CPU through M0 and M1 data files

8. Provide complete ready-made ladder logic program for fast application

9. Support configuration via ProSoft Configuration Builder software

10. Independent protocol processing design will not occupy main controller operation resources

3. Technical Specifications

Communication Parameters

Power Specification

Environmental Performance

Physical Installation

4. LED Status Description

5. Installation and Configuration Steps

1. Cut off all power of SLC 500 control system

2. Insert MVI46-DFCM module into empty slot of 1746 chassis

3. Connect external DF1 communication equipment to corresponding serial interface

4. Power on the system and confirm the module is recognized successfully

5. Set communication mode, station address and serial port parameters via configuration tool

6. Configure internal data mapping relation according to actual transmission demand

7. Import matching ladder program to complete data area matching

8. Download all configurations and user programs to controller

9. Conduct online communication test to verify data receiving and sending normally

6. Application Scope

1. Data interconnection between multiple Allen-Bradley PLC equipments

2. On-site HMI man-machine interface DF1 serial connection communication

3. Industrial SCADA system remote data collection and monitoring

4. Transformation and upgrading of old equipment with traditional DF1 communication interface

5. Factory production line distributed control system data interaction

6. Building automatic control and mechanical equipment serial signal transmission

7. Product Advantages

1. Standard DF1 protocol design, excellent compatibility with AB series automation products

2. Dual-port independent design can build two sets of DF1 communication networks at the same time

3. Flexible master-slave mode switching meets diverse networking demands

4. Simple system integration, no complex secondary protocol development required

5. Stable industrial-grade performance, suitable for long-term continuous field operation

6. Complete diagnosis function, easy daily maintenance and rapid fault location

8. Safety Operation Notes

1. All plugging, wiring and maintenance operations must be done under power-off state

2. Correctly distinguish RS-232 and RS-485 wiring definitions to avoid interface damage

3. Keep consistent baud rate, parity and station address among all communication devices

4. Reasonably plan communication address to prevent address conflict and data confusion

5. Add terminal matching resistance for long-distance RS-485 transmission

6. Avoid using the module beyond specified temperature and humidity working range