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Prosoft MVI69L-MBS Overview

The MVI69L-MBS is a compact Modbus Serial Lite Communication Module built for CompactLogix™ controllers. It enables flexible integration of Modbus devices while reducing engineering time through its Add-On Profile and Add-On Instruction. With one configurable serial port, the module operates as either a Master or Slave, making it a versatile solution for industrial networks.

Integration and Configuration

You can configure the MVI69L-MBS with ProSoft Configuration Builder software. The module automatically creates UDTs, simplifying data mapping and diagnostics. Configuration is stored in the CompactLogix project file (ACD), ensuring backup and easy restoration. This co-processor design reduces PLC scan impact and optimizes system efficiency.

Technical Specifications

General Specifications

• Module Type: CompactLogix 1769 single-slot
• I/O Size: 240 words (16-bit integers)
• Current Load: 450 mA max at 5 VDC
• Operating Temperature: 0° C to 60° C
• Storage Temperature: -40° C to 85° C
• Humidity Range: 5% to 95% non-condensing

Communication Parameters

• Baud Rate: 110 to 115K baud
• Data Size: 7 or 8 bits
• Stop Bits: 1 or 2
• Parity: None, Even, Odd
• RTS Timing Delay: 0–65535 ms

Modbus Protocol Support

• Supported Modes: RTU (CRC-16), ASCII (LRC)
• Function Codes: Coils, Input Status, Holding Registers, Input Registers
• Advanced Codes: Diagnostics, Report Slave ID, Mask Write

Master and Slave Functions

• Master Mode: Up to 30 configurable commands
• Slave Mode: Address range 1–247, remote Master access
• Floating-Point Formats: Enron and Daniel-style supported

Hardware Interfaces

• Debug Port: 10/100 Ethernet
• Application Port: RS-232, RS-422, or RS-485
• Connector: RJ45 (DB-9F with included cable)
• Isolation: 500V optical from backplane

Indicators and Accessories

• LED Indicators: OK, ETH, P1, BP, CFG
• Accessories: RJ45-to-DB9M cable, DB-9F breakout board

Applications

The MVI69L-MBS is ideal for OEMs and machine builders needing reliable Modbus communication within CompactLogix architectures. Its compact footprint, integrated diagnostics, and support for both Master and Slave operations make it a practical choice for smaller systems.

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