Some ProSoft cards paired with the 1454-9F can be jumpered for (4‑wire) or RS‑485 (2‑wire). In that case, the pinout changes completely:
The 4-wire configuration isolates the drive array from the receiver network array, allowing simultaneous bi-directional data pipelines. prosoft 1454-9f pinout
Tie the outer woven copper or foil shielding drain wire directly to . Some ProSoft cards paired with the 1454-9F can
RS-485 (2-wire half-duplex), RS-485 (4-wire full-duplex), and RS-422 RS-485 (4-wire full-duplex)
Check ProSoft Technology’s official product documentation for your specific gateway model (e.g., MVI56E, MVI71) as some modules allow software-swapping of TX/RX pins, which would require a straight-through cable instead. Always cross-reference the pinout with your module’s user manual.