Moxa Technologies CP-168U user manual Connection Cables and Cable Wiring, RS-232 Cable Wiring

5

Connection Cables and Cable Wiring

In this chapter, we illustrate the possible connections and cable wiring for the CP-168U boards.

In serial data communications, DTE stands for Data Terminal Equipment, such as a PC’s COM1/2, serial printers, and terminals, and DCE stands for Data Communication Equipment, such as modems.

RS-232 Cable Wiring

DB62 Female Connector Pinouts

Port	1	2		3	4	5	6		7	8	Signal
No.
	1	25		6	30	33	14		38	41	TxD
	22	3		27	8	11	35		16	19	RxD
	44	47		49	52	54	57		60	62	RTS
Pin	43	46		48	51	53	56		59	61	CTS
No.	2	26		7	31	34	15		39	42	DTR
	23	4		28	9	12	36		17	20	DSR
	24	5		29	10	13	37		18	21	DCD
	32		40		45	50		55		58	GND

NOTE: The CP-168U board has 1 GND wire that is shared with 6 pins (32, 40, 45, 50, 55, and 58), none of which is assigned to a particular port (since there are 8 ports, but only 6 GND pins). If you are building your own cable, you are free to use any of the GND pins with any of the ports.