DIO Expansion Modules DIO Expansion Modules 1. ◇:R ─ Relay output;T ─ Transistor SINK(NPN) output J ─ Transistor SOURCE (PNP) output 2. The unmarked frequencies of Digital Input (DI) or Digital Output (DO) are low speed FBs-8X FBs-8Y◇ FBs-8XY◇ FBs-16Y◇ FBs-16XY◇ FBs-20X FBs-24X FBs-24YT/J FBs-24XY◇ FBs-40XY◇ FBs-60XY◇