Product Id: 19474092
Description: Black Box Async RS-232<->RS-485 Interface Converter - Serial adapter - RS-232 - RS-485
Mfr Part #: IC1476A-F
MSRP: $118.42Get 115.2-kbps speed for transmissions over short distances or 19.2-kbps speed at distances up to 4000 feet (1219.2 m).
If the RS-232 side uses DB25 pinning… Black Box IC1476A-F converts unbalanced, full-duplex RS-232 signals to balanced half- or full-duplex RS-485 signals. It uses two user-selectable methods to enable the RS-485 driver, either by toggling Request to Send (Pin 4) of the RS-232 side or by automatic sensing of the data on the Transmit Data (Pin 2) of the RS-232 side. By removing both sets of jumpers, you can constantly enable the RS-485 driver and receiver. In other words, it can act like an RS-422 converter, unlike the other converters here, which use data to control the RS-485 transmitter.