Digital Outputs

Digital Outputs Overview

Radonix control boards’ digital outputs are labeled O[nn], where nn is a positive integer indicating the output number. Each output is protected against short-circuits and overcurrent (≈300 mA max per output on PC-Pro; ≈1 A on PC-Smart). On fault, the red O-Error LED lights and all outputs are disabled—never tie outputs together or use them to drive high-current loads directly; always use a relay for loads >300 mA (Pro) or >1 A (Smart).

Output type: NPN sink (Low-Active) — active = pulled to GND.

Figure 9 – Internal wiring of digital outputs

ℹ️

All peripherals (PLCs, inverters, etc.) must share the same 0 V reference, even if powered by separate supplies.

Wiring Examples

NPN (sink) wiring:

PNP (source) wiring:

Configuration

Under:

Setting → System → OutPort[nn]

Each output has:

• Enabled: enable/disable the output
• Link: assign to a function/pin

Common Link Options

Table 3 – Output link options