| Data | RIO-471x0 Range |
|---|---|
| Discrete digital inputs | X0 - X15 |
| Discrete digital outputs | Y0 - Y15 |
| Digital output register (16 bits) | V0 |
| Digital input register (16 bits) | V100 |
| Current timer value | V200 - V207 |
| Current counter value | V250 - V257 |
| Analog inputs | V300 - V307 |
| Analog outputs | V400 - V407 |
| User variable space (4.2 format) | V500 - V524 |
| Control relays | C0 - C15 |
| Timers | T0 - T7 |
| Counters | CT0 - CT7 |
| K constants | No limit on total number.Galil 4.2 format (except where noted) |