Moxa Technologies CP-118EL manual CP-118EL

PCI Express Board User’s Manual Pin Assignments

CP-118EL

The CP-118EL board has a female SCSI VHDCI68 connector on the board, with various connection options available for connecting from the board to your serial devices. In this chapter, we provide pin assignments for the board side connector, as well as pin assignments for device side connectors for the different connection options.

The CP-118EL board supports RS-232, RS-422, 4-wire RS-485, and 2-wire RS-485. Note that the RS-422 standard uses a balanced voltage digital interface to allow 9600 bps communication over cables of up to 4000 feet in length. You can connect ten receivers to one driver for broadcasting systems. The RS-485 standard is an enhanced version of the RS-422 balanced line standard. It allows multiple drivers and receivers to work on a multidrop network. A maximum of 32 drivers and 32 receivers can be set up on a multidrop network. The CP-118EL board supports both 2-wire half-duplex and 4-wire full-duplex RS-485 communications. In 2-wire RS-485, Data+/- pins are used for both data transmitting and receiving.

Board Side Pin Assignments—Female SCSI VHDCI68

1 34

				35					68
RS-232
	Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal
	1	RxD6	13	DCD4	25	TxD2	37	RI7	49	RI5	61	TxD1
	2	CTS6	14	RTS4	26	GND	38	RTS7	50	CTS5	62	DSR1
	3	RI6	15	RI4	27	TxD0	39	DCD7	51	RxD5	63	DTR1
	4	RTS6	16	CTS4	28	DSR0	40	DTR7	52	RxD3	64	DCD1
	5	DCD6	17	RxD4	29	DTR0	41	DSR7	53	CTS3	65	RTS1
	6	DTR6	18	RxD2	30	DCD0	42	TxD7	54	RI3	66	RI1
	7	DSR6	19	CTS2	31	RTS0	43	GND	55	RTS3	67	CTS1
	8	TxD6	20	RI2	32	RI0	44	TxD5	56	DCD3	68	RxD1
	9	GND	21	RTS2	33	CTS0	45	DSR5	57	DTR3
	10	TxD4	22	DCD2	34	RxD0	46	DTR5	58	DSR3
	11	DSR4	23	DTR2	35	RxD7	47	DCD5	59	TxD3
	12	DTR4	24	DSR2	36	CTS7	48	RTS5	60	GND

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