| RS423 | |
|---|---|
| Standard | EIA RS-423 |
| Protocol information | |
| Physical media | Group of copper cables |
| Network topology | Point-to-point, Multi-dropped |
| Maximum devices | 10 (1 driver & 10 receivers) |
| Maximum distance | 1200 meters (4000 feet) |
| Mode of operation | Single-ended (unbalanced) |
| Maximum baud rate | Up to 100kbit/s |
| Voltage | -6V to +6V (maximum) |
| Mark(1) | -4V to -6V |
| Space(0) | +4V to +6V |
| Available signals | Tx, Rx, GND |
| Connector types | Not specified |
RS-423, also known as TIA/EIA-423, is a technical standard originated by the Electronic Industries Alliance that specifies electrical characteristics of a digital signaling circuit. Although it was originally intended as a successor to RS-232C offering greater cable lengths, it is not widely used.
RS-423 systems can transmit data on cables as long as 1,200 meters (3,900 ft).[dubious – discuss] It is closely related to RS-422, which used the same signaling systems but on a different wiring arrangement: RS-423 differed primarily in that it had a single return pin instead of one for each data pin.[1]
RS-423 specifies an unbalanced (single-ended) interface, similar to RS-232, with a single, unidirectional sending driver, and allowing for up to 10 receivers.[2] It is normally implemented in integrated circuit technology and can also be employed for the interchange of serial binary signals between DTE & DCE.