RDM (Remote Device Management, ANSI E1.20) uses the same 5-pin XLR as DMX512 but adds bidirectional communication allowing lighting consoles to discover, configure, and monitor DMX devices on the same cable.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | GND | Shield and ground | GND |
| 2 | DATA- | RDM/DMX data negative | BUS |
| 3 | DATA+ | RDM/DMX data positive | BUS |
| 4 | NC | Reserved | I/O |
| 5 | NC | Reserved | I/O |
RDM (Remote Device Management, ANSI E1.20) uses the same 5-pin XLR as DMX512 but adds bidirectional communication allowing lighting consoles to discover, configure, and monitor DMX devices on the same cable.