Proven and reliable, RS-485 (EIA/TIA-485) stays a popular fieldbus communication interface, due to simple installation via low cost twisted pair copper cables, up to 1200m length. EKF introduces the SU1-TWIST, a peripheral slot card for CompactPCI Serial systems, based on PCI Express. The board is equipped with four isolated front panel RS-485 ports. High speed RS-485 balanced line transceivers with internal 5kV isolation barrier provide for optimum noise and EMC immunity.
The SU1-TWIST is equipped with an octal PCI Express to UART bridge. The 950-style UARTs are compatible with many asynchronous serial applications and protocols. Four isolated EIA/TIA-485 transceivers are wired to Micro-D front panel connectors, individually configurable for full or half-duplex operation, either point-to-point or multipoint (PartyLine) applications. Another four UART channels are available via the CompactPCI Serial backplane connector P4 for versatile rear I/O usage.