Communications Processor


  • Industrial Internet of Things (IIoT) integration
  • Big Data applications integration
  • Connect serial devices to an IP based Ethernet LAN

About the PMC-1304-3 Communications Processor

The PMC-1304-3 Communcations Processor is a fully integrated solutions for the Industrial Internet of Things (IIoT) and Big Data applications.

It is an ideal instrument to connect serial devices to an IP based Ethernet LAN for any industrial automation systems that require isolation protection as well as high reliability. The Basic Model provides Modbus TCP to RTU Gateway function and supports interrogation from multiple Modbus TCP Masters. The optional RTU Model features 2GB On-Board Memory for local data caching and logging to enhance overall system performance and provides data  redundancy.



  • Designed to withstand the harshest industrial environments
  • 15kV (contactless) & 6kV (contact) ESD protection and 3kV isolation protection for all Serial signals
  • 1.5kV isolation protection for Ethernet ports
  • Simple port configuration via built-in web interface
  • DIN-Rail or Surface Mounting
  • Dual 10/100BaseT (RJ45)
  • Standard 2xRS-485, optional 4xRS-485
  • Modbus Gateway function
  • Multiple Upstream Applications support

Outstanding Warranty

Three Year Warranty. A warranty reflects the quality of a product. CET provides Industrial grade products that are Tropicalized for use within humid environments. Unlike other many vendors whose products have limited warranties, products that are not built to last, CET products are rugged and have the warranty to match.


Parameters Accuracy
Operating Temperature -25oC - 70oC
Storage Temperature -40oC - 85oC
Humidity 5% to 95% non-condensing
Atmospheric Pressure 70kPa to 110kPa  
Unit Dimensions 115x63x145mm
CET PMC-1304-3

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