ProSoft MVI56-BAS Module | BASIC Programming

Legacy BASIC Program Control with the MVI56-BAS

The MVI56-BAS adds BASIC programming capability to Rockwell ControlLogix controllers as a single-slot module. This module runs custom logic routines alongside the main PLC program. System integrators therefore apply it when legacy BASIC code must stay operational after platform upgrades. Its single-slot format fits standard ControlLogix chassis without extra adapters.

Detailed Technical Parameters

Program execution defines the MVI56-BAS, because the module runs BASIC routines on dedicated firmware independently from the ControlLogix processor. The backplane interface exchanges data with the PLC program. Meanwhile, the serial port accepts standard RS-232 wiring for terminal access. Review the essential specifications in the table below.

Parameter	Specification
Function	BASIC language program execution for ControlLogix
Serial port	One RS-232 port with DB9 connector
Dimensions (W × H × D)	40 × 180 × 130 mm
Weight	Approximately 0.5 kg
Interface	ControlLogix backplane connector plus RS-232 port
Component count	Program processor board plus serial interface stage
Energy storage	Local decoupling capacitor array
Operating temperature	0 °C to 60 °C

Integration into Control Systems

The MVI56-BAS fits into a standard ControlLogix slot and connects through the backplane connector. Commissioning engineers load BASIC programs through the serial port. Consequently, legacy routines return to service quickly after module replacement. The module executes program cycles within fixed timing windows. Furthermore, the metal faceplate shields the circuitry from interference in electrical rooms.

Why Plants Choose This Module

Many facilities still operate ControlLogix platforms for their proven control reliability. Hence, the MVI56-BAS serves as a dependable spare for keeping legacy programs online. Its standardized slot format simplifies stock management across multiple sites. In addition, the compact design reduces panel space requirements inside cabinets. This module keeps custom routines running and production schedules on track.