Open Protocol vs Closed Protocol UPS Systems

Power Control
03 Feb 2025

Open Protocol vs Closed Protocol UPS Systems

Power Control offer a range of both Open Protocol and Closed Protocol UPS systems.  

Open and closed protocols refer to the two different communication and data exchange methods used to transmit information from the UPS to other connected devices or software.    

The below highlights the differences between the two standards and the pros and cons associated with each: 

  

Open Protocol UPS Systems 

An open protocol UPS system uses standardised communication methods and data formats so can be openly accessed and understood by a variety of manufacturers, software developers and users. 

 

Pros of an Open Protocol UPS System: 

Open protocol systems are ideal for environments where flexibility, interoperability and easy integration are essential.  

  • Flexible and transparent communication standard for effortless monitoring and management of the power system  
  • Integrates easily with third-party or customised network monitoring and management solutions, including BMS platforms that monitor and control a variety of functions 
  • Supports a wide range of communication protocols including Modbus, SNMP, BACnet and HTTP/HTTPS 
     
  • Offers real-time alerts and monitoring in relation to power health, battery status and system performance to allow for quick diagnosis and issue resolution 
  • Cost-effective, easy to maintain and upgrade 
  • Scalable across locations 
  • Suitable for use in: data centres, IT infrastructure management, telecommunications and network operations centres, commercial buildings, manufacturing centres, universities, industrial sites, healthcare and research facilities 

  

Cons of an Open Protocol UPS System: 

  • Open protocol UPS offer easier access to unauthorised parties making them more vulnerable to the risks of hacking and cyberattacks if not properly secured 
  • Variations in how different manufacturers implement ‘universal’ protocols can lead to compatibility and integration challenges  
  • May not be suitable for some types of hardware resulting in slower response times, limited diagnostic capabilities and performance limitations 
  • Lacks advanced functionality in terms of performance and data  
  • Higher maintenance needs 
  • Less suited to environments that require stringent security, highly customised functionality or dedicated vendor support  

  

Closed Protocol UPS Systems

Closed protocol UPS systems are not disclosed publicly. Communication interface, data format and management functions are therefore typically only accessible through the manufacturer's own specific software or hardware. 

  

Pros of a Closed Protocol UPS System

Offers enhanced security and reliability. External access to data and system controls are limited, reducing the risk of unauthorised access.   

  • Limited flexibility in comparison to open protocol UPS systems 
  • Advanced reliability and optimised performance  
  • Ensures uninterrupted operation of mission-critical systems  
  • Offers compliance with specific security standards and protocols 
  • Secure and standardised management across multiple locations  
  • Plug and play functionality affords a simplified user experience - minimal customisation options  
  • Dedicated manufacturer support  
  • Suitable for use in: high-security environments (including government buildings, military installations, financial institutions), hospitals and healthcare settings with critical life-saving facilities, manufacturing and industrial automated production lines, retail and banking, high-end residential and commercial installations with single-vendor eco-systems  

 

Cons of a Closed Protocol UPS System 

Closed protocol UPS may not integrate easily with third-party or cross-vendor systems, resulting in a dependency on the manufacturer for monitoring, control, scalability and in some cases upgrades and repairs. 

  • Lack of flexibility and customisation  
  • Limited ability to integrate with some BMS and network monitoring infrastructure  
  • Reduced compatibility with remote monitoring tools – not ideal for organisations with distributed infrastructure or remote sites   
  • Restricted access to UPS insights, data and analytics with certain manufacturers  
  • Higher total cost of ownership due to vendor lock-in   
  • Reliance on manufacturer driven updates may result in a lack of adaptability to new technologies  
  • Risk of obsolescence should the manufacturer withdraw support of particular models