GuardPLC 1600 Safety Controllers

Bulletin 1753 GuardPLC™ 1600 Controllers are among the fastest safety PLCs in the industry. They provide 10 milliseconds throughput and exceptionally high mean-time between failures, ensuring system safety and reliability. These cost-effective, packaged controllers are ideal for smaller applications and provide integrated digital I/O points.


  • TÜV-certified for use in applications to SIL 3 and to PLe/Category 4
  • Provides 28 safety digital I/O points (20 inputs and 8 outputs)
  • Contains an embedded 4-port Ethernet switch and an RS-485 port (for read-only ASCII communication)
  • Communicates over GuardPLC™ Ethernet and over EtherNet/IP™
  • Offers Modbus RTU slave and PROFIBUS DP slave communication options
  • Integrates with 1734 POINT Guard I/O™, 1753 GuardPLC Distributed Safety I/O, and 1791ES CompactBlock™ Guard I/O modules
  • DIN-rail mounting only