COM-4CN-USB RS-232C 4ch Serial I/O Unit for USB

COM-4CN-USB | 4ch USB to RS-232C Converter | Contec Americas Contact Sales Department for Pricing New COM-4CN-USB 4ch RS-232C USB 2.0 Bus Power 921,600 bps 9-pin D-SUB VCCI-A · FCC-A · CE · UKCA USB 2.0 unit expanding a PC USB port into four RS-232C serial communication ports. Supports up to 921,600 bps with 128/384 byte FIFO buffers per channel. Bus-powered, compact design with 9-pin D-SUB connectors, DIN rail mount, and -20 to +60°C operation. 4 RS-232C Ports 921.6k bps Max Baud Rate -20 to +60 °C Operating Temp 128/384 TX/RX Buffer (bytes) Contec Americas · Serial Communication 4ch USB to RS-232C Converter COM-4CN-USB · 921.6 kbps · Bus Power · DIN Rail View Collection 01 Four RS-232C Ports from One USB The COM-4CN-USB expands a single USB port of a PC into four RS-232C-standard serial communication ports. Each port features a 9-pin D-SUB connector, just like a PC, allowing the use of commercially available RS-232C cables. The product supports baud rates up to 921,600 bps and includes separate 128-byte transmit and 384-byte receive FIFO buffers per channel. Single USB-Serial Adapter 1 channel only Requires multiple adapters for 4 ports Consumes multiple USB ports Messy cabling COM-4CN-USB 4 RS-232C channels Single USB connection Compact all-in-one design Standard 9-pin D-SUB connectors Using the device driver COM-DRV, the product can be used in the same manner as standard COM ports of a PC, supporting Win32 API DCB structures and Linux standard system calls. A diagnostic program is included to confirm hardware operation and perform communication tests. 02 Compact & Versatile Design Engineered for industrial and commercial applications, the COM-4CN-USB offers flexible installation options and robust performance in a compact form factor. Compact design — 188.0(W) x 78.0(D) x 30.5(H) mm for space-saving installation. Wide operating temperature — -20 to +60°C for harsh environments. USB bus powered — No external power supply required. DIN rail mounting — Standard DIN rail mechanism for easy panel installation. Multiple mounting options — Screw fastening, magnet (option), rubber feet. Individual FIFO buffers — 128-byte transmit / 384-byte receive per channel, reducing CPU load. 03 Full Specifications Specification Detail Model COM-4CN-USB Number of Channels 4 channels Interface Type RS-232C Transfer Method Asynchronous serial transfer Baud Rate 300 – 921,600 bps (software selectable) Data Length 7, 8 bits Stop Bits 1, 2 bits Parity Even, Odd, None Controller Chip XR21V1414 or equivalent Buffer Memory 128-byte transmit / 384-byte receive FIFO (per channel) Connecting Distance 15 m (typical) USB Specification USB 2.0/1.1, Full Speed (12 Mbps) Power Supply Bus power only Current Consumption 5VDC 105 mA (max) USB Cable Length 1.8 m Dimensions (mm) 188.0 (W) x 78.0 (D) x 30.5 (H) Weight 230 g (excluding cable and attachments) Operating Temperature -20 to +60°C Operating Humidity 10 – 90% RH (no condensation) Certifications VCCI Class A, FCC Class A, CE (EMC Class A, RoHS), UKCA Connector (RS-232C) 9-pin D-SUB (male) x 4 Connector (USB) USB Type-A / USB mini-B 04 Connections & LED Indicators The COM-4CN-USB features four 9-pin D-SUB connectors (male) for RS-232C connections, with standard pin assignments compatible with PC COM ports. LED indicators provide visual status of power and communication activity. POWER (Green) — Indicates power status (ON = power supplied). RxD (Yellow) — Indicates reception status (ON = receiving data). TxD (Green) — Indicates transmission status (ON = sending data). Software control — RTS, CTS, DTR, DSR lines can be controlled and monitored via software. Cable selection — Use straight-through or crossed (null modem) cable depending on the connected device. 05 Certifications and Compliance VCCI Class A — Japanese voluntary control for electromagnetic interference (commercial and industrial environments). FCC Class A — U.S. emissions compliance for industrial use environments. CE (EMC Directive Class A + RoHS Directive) — European conformity for electromagnetic compatibility and restriction of hazardous substances. UKCA — UK Conformity Assessed marking for UK market compliance. 06 Optional Accessories Part Number Description Use CPS-MAG01-4 CONPROSYS Series Magnet (Four Piece Set) Alternative mounting option Ready to expand your serial ports? The COM-4CN-USB is available through Contec Americas on a quote basis. Contact our sales team to discuss your application, quantity requirements, and integration needs. Contact Sales Department for Pricing Tags COM-4CN-USB USB to RS-232C 4ch Serial Converter RS-232C Industrial Serial 921.6 kbps USB 2.0 Bus Powered DIN Rail Mount Contec Americas VCCI-A FCC-A CE UKCA