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Industry 4.0 Stack Light Monitoring System  

The ICP DAS stack light monitoring system is an off the shelf solution for remote monitoring of MES (Manufacturing Execution System) machines. The system detects the status of each stack light, and supports rapid configuration of a visual representation of the facility or site being monitored. The solution supports both real-time and historical dashboards and reports, and can be used to improve machine utilization and throughput.

The hardware used in this solution is the ICP DAS tSL-P4R1/tSL-PA4R1 stack light monitoring module which includes 4-channel DC/AC digital input and 1-channel relay output. The module detects the status of each color segment of the stack light (OFF, ON, or flashing) as well as any combination of multiple color segments.  


  • Factory automation
  • Machine automation
  • Remote maintenance
  • Remote diagnosis
  • Testing equipment

Get Started

Turnkey Solution support by ICP DAS

Contact ICP DAS to get direct support for proof of concepts and full deployments!

Hardware Purchasing & Installation

See the Hardware Ordering section  and please feel free to contact the sales team to discuss your requirements.

Software Sign-up 

To get startetd, click "Sign Up" and follow the steps to deploy a full solution based on Exosite's ExoSense® cloud application.  The software is deployed with a data simulator which helps with configuration and testing prior to hardware installation.


This solution uses the ICP DAS ExoWise ( WISE-5231 series ) IIoT Edge Controller in conjunction with a tSL-P4R1/tSL-PA4R1 stack light monitoring module.  Please read below for details on the tSL-Px4R1 modules. 

The ExoWise IIoT Edge Controller can simultaneously support additional sensors via Modbus or its analog and digital I/O.  It uses Ethernet or 3G/4G cellular for cloud connectivity.


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Hardware Overview 

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Hardware Ordering

Please order the following hardware from the ICP DAS sales team:

  • Gateway: WISE-5231
  • Stack Light Monitoring Module: tSL-P4R1 or tSL-PA4R1 (depending on your requirements - please consult the table above)

Have Questions?

Contact Us