FLEX Ex I/O Terminal Bases

Bulletin 1797 FLEX Ex™ terminal bases snap onto the DIN rail to the right of the communication adapter module. The terminal bases provide terminal connection points for I/O wiring and plug together to form the backplane.


  • Provides the mounting base for FLEX™ Ex I/O modules and terminal locations for field wiring
  • Each terminal base snaps onto the DIN rail
  • Plug multiple terminal bases together to form the I/O backplane
  • Lets you add or remove I/O modules without disturbing field wiring or system power
  • Screw or spring terminations