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User manual - ICP DAS USA

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8. Introduction of LinPAC-8x4x Serial PortsThis section describes the function of the three serial ports (RS-232/RS-485 interface)in the LinPAC-8x4x embedded controller (see Fig 8-1 for LP-8841 and Fig 8-2 for LP-8141).The information in this section is organized as follows:• COM1 Port ─ Internal communication with the I-87KW modules in slots• COM2 Port ─ RS-485 (D2+, D2-; self-tuner ASIC inside)• COM3 Port ─ RS-232/RS-485(RXD, TXD, CTS, RTS and GND for RS-232, Data+ and Data- for RS-485)• COM36 Port ─ RS-232 (RXD, TXD, CTS, RTS, DSR, DTR, CD, RI and GND)COM port Definitions in LinPAC-8000 SDK Device name Default baudrateNone COM1 None 1152001 (console) None None 1152002 (RS-485) COM2 ttyS0 96003 (RS-232/485) COM3(LP-8114/8841 only) ttyS1 96004 (RS-232) COM36(LP-8114/8841 only) ttyS34 9600Fig. 8-1<strong>User</strong> can try the stty command to query or setting COM port. For example, to modifybaudrate 9600 to 115200 via COM3 port:# stty -F /dev/ttyS1 ispeed 115200 ospeed 115200LinPAC-8x4x SDK:269

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