COM-4C-PE

PCI Express 4‑channel RS‑232C serial I/O board. Supports up to 921,600 bps with 128‑byte FIFO buffers per channel. Operates as standard Windows/Linux COM ports. Up to 16 boards can be installed in a single system.

The COM‑4C‑PE provides four RS‑232C serial ports on a PCI Express board. It supports data rates up to 921,600 bps and includes 128‑byte FIFO buffers for transmit and receive per channel. The board operates as standard Windows/Linux COM ports using the included COM‑DRV driver.

• High speed — supports baud rates from 30 to 921,600 bps (depending on board revision).
• FIFO buffers — 128 bytes each for transmit and receive per channel; reduces CPU load during high‑speed communication.
• Software control — RTS, CTS, DTR, DSR lines can be controlled and monitored via software.
• High density — 4 ports on a single board; up to 16 boards per system (64 ports).
• COM port range — supports COM1 through COM256.

The board uses a 37‑pin on‑board connector. Optional conversion cables are available to split into four 9‑pin D‑SUB (PCE37/9PS) or four 25‑pin D‑SUB (PCE37/25PS) male connectors. A DIN‑rail mountable conversion unit (CCU‑78F/25M) is also available.

• Optional conversion cables — PCE37/9PS (37‑pin to 9‑pin D‑SUB ×4), PCE37/25PS (37‑pin to 25‑pin D‑SUB ×4).
• Optional conversion unit — CCU‑78F/25M (DIN‑rail or wall mount, 78‑pin to 25‑pin D‑SUB ×8).
• Signal lines — TD, RD, RTS, CTS, DTR, DSR, DCD, SG, RI.
• Cable types — use straight cable for modem connection, crossed (null modem) for PC‑to‑PC connection.

• VCCI Class A — Japanese EMC for commercial/industrial environments.
• FCC Class A — U.S. emissions compliance for industrial use.
• CE (EMC Directive Class A + RoHS) — European conformity.
• UKCA — UK conformity assessed.