Tel: (65) 6746 3331
Monday to Friday
M.2 4-port RS-232/422/485 serial
The M.2-COM-4SM family of cards feature high performance 16C950-class UARTs. Available in 4-port and 2-port versions, each port is capable of communication speeds up to 921.6kbps in RS-232 (differential modes support speeds as high as 3Mbps) and has 128-byte deep transmit and receive FIFOs. Large FIFOs protect against data loss in multitasking operating systems, reduce CPU utilization, and improve data throughput, while reducing or eliminating inter-character or inter-packet pauses. The advanced integrated circuit with pre-scalar supports a wide variety of custom baud rates, and any rates not otherwise achievable can be supported via a custom factory-installed crystal oscillator (up to 10Mbps!).
RS-232, RS-422, or RS-485 can be software selected, per port, and the selection is stored in non-volatile memory for future use. If you don’t need that much flexibility you can order versions with only RS422/485 or even pure RS232. The RS232 ports provided by the card are 100% compatible with every other industry-standard serial COM device, supporting TX, RX, RTS, and CTS. RS422 mode uses the same transceivers as the RS-485 specification, allowing perfect 4-wire RS-422 and RS-485 compatibility – and the device supports full-duplex RS-485 4-wire.
Communication is possible either with custom application software, with off-the-shelf applications (such as HyperTerminal), or with provided samples and utilities, including WinRISC™ (“Windows Really Incredibly Simple Communication”).
The serial ports on the device are accessed using a low-profile, latching, 6-pin Hirose connector. Optional breakout cables are available, and bring each port connection to a panel-mountable DB9-M connector.
|Interface||M.2 2260/2280 with B & M key|
|Number of serial ports||4 or 2 ports|
|Protocols||“SM” model – RS-232/422/485
“S” model: RS-422/485
“COM232” model: RS-232 only
|Maximum baud rate||Up to 921.6k baud in RS-232
Up to 3MBaud in differential modes
Advanced-prescaler allows a wide variety of unusual baud rates to be achieved
Up to 10Mbps via custom crystal option
|FIFO||128-byte FIFO for each transmit & receive buffer|
|Power required||+3.3VDC @ 1.6W (typical)|
|Operating temperature||-40ºC to +85ºC|
|Operating humidity||5% to 95% noncondensing|
|ESD Protection||±15kV on all signal pins (IEC 61000)|
|M.2-COM-4SM||M.2 4-port RS-232/422/485 serial|
|M.2-COM-2SM||M.2 2-port RS-232/422/485 serial|
|M.2-COM-4S||M.2 4-port RS-422/485 serial|
|M.2-COM-2S||M.2 2-port RS-422/485 serial|
|M.2-COM232-4||M.2 4-port RS-232 serial|
|M.2-COM232-2||M.2 2-port RS-232 serial|
|CAB-M.2-COM4||Four port DB9 male cable accessory kit|
|CAB-M.2-COM2||Two port DB9 male cable accessory kit|
|M.2-HDW-KIT2||2mm mounting hardware kit|
|M.2-HDW-KIT2.5||2.5mm mounting hardware kit|