GuardPLC Safety I/O

Bulletin 1753 GuardPLC™ Safety I/O provides the benefits of traditional distributed I/O for Allen-Bradley® GuardPLC systems. Built-in GuardPLC 100 Mbps Ethernet network connectivity provides one of the fastest safety networks and machine stop times in the industry. The GuardPLC digital and analog I/O blocks are TÜV-certified up to SIL 3, Cat. 4, PLe.


  • Built-in GuardPLC™ 100 Mbps Ethernet network connectivity
  • Built-in two-port Ethernet switch makes it easy to connect I/O modules to the GuardPLC controller
  • Works with GuardPLC 1600 and GuardPLC 1800 safety controllers
  • GuardPLC Hand-held Terminal speeds commissioning of new or replacement GuardPLC I/O modules


  • 1753 GuardPLC Digital I/O Blocks
  • 24V DC safety I/O circuits
  • Up to 28 points per block
  • Input, output, relay and combination blocks available
  • 1753 GuardPLC Analog I/O Blocks
  • Combination I/O block
  • Includes eight safety inputs and four standard outputs