





MOXA CP-118U Universal PCI Multiport Serial Board
- Warranty: 365 days
- Quality: Original module
- Condition: New / Used
- Warehouse: Spot
- Delivery time: Shipped in 3 days after payment
- Mailbox:plcvarious@foxmail.com
Introduction
1.Core Functions
CP-118U is an industrial multi-serial PCI board, expanding a PC to own 8 independent serial COM ports for connecting field serial instruments.More products: www.plcva.com
- Multi-standard serial interface support Each port can be configured via jumper or software to run RS-232, RS-422, or 2-wire /4-wire RS-485. It supports complete modem control signals for RS232 (TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND).
- High-speed serial data transmission Baud rate ranges from 50 bps up to 921.6 kbps. Built-in 128-byte hardware FIFO buffer, supports hardware flow control (RTS/CTS) and software flow control (XON/XOFF), prevents data loss under high-speed continuous transmission.
- Universal PCI bus compatibility 32-bit Universal PCI, supports 3.3V and 5V PCI / PCI-X slots, can be installed in most industrial PCs and rack servers. Maximum 8 boards can be installed inside one single PC, expanding up to 64 serial ports.
- Cross-platform driver support Drivers available for Windows, Linux, UNIX. Moxa provides PComm Lite management utility for port monitoring, data logging, serial debugging and performance analysis.
- Onboard status diagnosis LED indicators on the card show Tx/Rx activity of each serial port, convenient for on-site troubleshooting.
- ADDC™ automatic RS485 direction control On-chip ADDC function automatically controls RS485 transceiver enable/disable, no extra delay setting required for multi-drop RS485 bus, simplifies wiring and commissioning.
- Hardware protection Built-in ESD protection for serial ports to resist electrostatic shock and minor surge interference.

MOXA CP-118U Universal PCI Multiport Serial Board
2. Applications & Purpose
Core Purpose
It expands an industrial PC or server with 8 independent serial COM ports. The PC can communicate with multiple field serial devices simultaneously, collecting measurement data and sending control commands in industrial sites. It converts PCI bus signal into multi-channel RS232/422/485 serial interfaces.
Typical Application Fields
- Industrial automation: Connect PLC, weighing instrument, temperature transmitter, flow meter, barcode scanner
- Power & substation: RTU, energy meter, protection relay serial communication
- Building automation: HVAC controllers, access control system
- Financial industry: POS terminal, ATM equipment
- Factory data acquisition, SCADA host, test bench control system
Working Flow
Industrial PC PCI slot → CP-118U board → DB62 breakout cable → 8 × DB9 serial ports → connect RS232/422/485 field instruments; PC application software reads data or sends commands via virtual COM ports created by the driver.www.plcva.com

MOXA CP-118U Universal PCI Multiport Serial Board
3. Key Specifications
- Port quantity: 8 independent serial ports
- Serial standards: RS-232, RS-422, 2-wire /4-wire RS-485
- Max baudrate: 921.6 kbps
- FIFO buffer: 128 bytes per port
- Bus: 32-bit Universal PCI (3.3V /5V, PCI-X compatible)
- External connector: DB62 female, paired with separate 8-port DB9 breakout cable
- Operating temperature (standard CP-118U): 0 ℃ ~ +55 ℃
- Max boards per PC: 8 pcs
- Supported OS: Windows, Linux, UNIX
- Utility software: PComm Lite for serial debugging & monitoring
Important distinction: CP-118U supports RS232/422/485; CP-138U only supports RS422/485 without RS232 function. This is an internal PCI board for industrial PC, not USB serial adapter or serial device server.

MOXA CP-118U Universal PCI Multiport Serial Board
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| More products: www.plcva.com |
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