CLX-PVX
May 18, 2026

CLX-PVX

Model: CLX-PVX Manufacturer: ProSoft Technology Product Type: In-chassis plug-in module for Allen-Bradley ControlLogix platform Function: This module is installed directly into ControlLogix chassis slots. It enables seamless communication between ControlLogix controllers and legacy Fisher PROVOX DCS I/O bus systems. It supports phased system upgrade and migration, allowing users to replace old PROVOX main controllers with modern Rockwell ControlLogix systems while retaining existing field PROVOX I/O hardware.

Description

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1. Product Overview

Model: CLX-PVX
Manufacturer: ProSoft Technology
Product Type: In-chassis plug-in module for Allen-Bradley ControlLogix platform
Function: This module is installed directly into ControlLogix chassis slots. It enables seamless communication between ControlLogix controllers and legacy Fisher PROVOX DCS I/O bus systems. It supports phased system upgrade and migration, allowing users to replace old PROVOX main controllers with modern Rockwell ControlLogix systems while retaining existing field PROVOX I/O hardware.

2. Main Features

  1. Standard ControlLogix backplane design, easy installation without extra external power supply

  2. Dual operation modes available for safe and non-stop system migration

  3. Fully compatible with all types of Fisher PROVOX remote I/O modules

  4. Support up to 64 PROVOX I/O cards on single communication bus

  5. High-capacity data transmission, 250 input words and 248 output words supported

  6. Automatic network scanning and I/O configuration identification

  7. Automatically convert PROVOX data points into standard ControlLogix controller tags

  8. Support primary and secondary dual redundant PROVOX bus connection

  9. Complete bus fault diagnosis and status monitoring function

  10. Stable industrial performance for long-term continuous operation in process industries

3. Operation Modes

Monitor Mode

ControlLogix runs simultaneously with original PROVOX host controller to realize real-time data comparison and logic verification. It will not interfere with normal production operation, mainly used for pre-migration testing, program debugging and function confirmation.

Master Mode

Cut off original PROVOX main control system, ControlLogix takes full control of PROVOX field I/O bus and all on-site process control logic, completing official system replacement and upgrade.

4. Technical Specifications

Power Consumption

Power Supply: Powered by ControlLogix chassis backplane
Operating Current: 675mA at 24VDC, 5mA at 5.1VDC
Maximum Power Dissipation: 20W

Physical & Environmental

Installation: Standard ControlLogix chassis slot mounting
Module Width: 35mm
Operating Temperature: 0°C ~ +60°C
Storage Temperature: -20°C ~ +70°C
Relative Humidity: 5% ~ 95%, non-condensing
Industry Certifications: CE, UL, FCC, RoHS

Communication Interfaces

Internal Port: ControlLogix high-speed backplane bus
External Port: Two BNC interfaces for primary and secondary PROVOX redundant bus

5. LED Status Definition

System Indicators: Show module power status and backplane communication condition
Bus Indicators: Display PROVOX bus link status and real-time data transmission
Fault Indicators: Light on to alarm communication failure, configuration error or bus abnormality

6. Installation and Configuration Steps

  1. Cut off total power supply of ControlLogix rack system

  2. Insert CLX-PVX module into vacant standard slot firmly

  3. Connect primary and secondary PROVOX field bus cables to corresponding BNC ports

  4. Restore system power supply and confirm the module is recognized by controller

  5. Finish network parameter setting and I/O point mapping via configuration software

  6. Select suitable operation mode according to project migration progress

  7. Download configuration data and conduct full-point input and output test

  8. Confirm data accuracy and control logic stability before formal operation

7. Application Scope

  1. Fisher PROVOX legacy DCS system renovation and upgrading projects

  2. Petrochemical, refining and energy industry large-scale process control system migration

  3. Old industrial control system reconstruction project which needs to retain field I/O devices

  4. Joint operation and seamless switching between new ControlLogix system and old PROVOX equipment

  5. Low-risk gradual replacement scheme to shorten production downtime

  6. Unified centralized monitoring of distributed PROVOX remote I/O stations

8. Product Advantages

  1. Realize non-stop phased migration to minimize production loss

  2. Maximize reuse of original field I/O devices and save project investment cost

  3. In-chassis module design brings lower communication delay than external gateway

  4. Native integration with Logix platform, convenient programming and daily maintenance

  5. Dual redundant bus design improves overall system operation stability

  6. Long-term firmware update service and professional technical support available

9. Safety Precautions

  1. All module insertion, removal and wiring work must be done under power-off state

  2. Standardize PROVOX bus wiring and ensure good connection of redundant lines

  3. Strictly distinguish monitor mode and master mode to avoid control logic conflict

  4. Regularly inspect bus connection status and module operating temperature

  5. Professional automation technicians are required to complete configuration debugging and system switching work


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