Mitsubishi Electronics GOT1000 manual 596

RS485 connection diagram 2) (For 1 pair wiring)

Serial multi drop				CON side*3(20 pin)					CON side*3(20 pin)				CON side*3(20 pin)
connection unit *2
SDA*1				SDA1(TXD1+)	6				SDA2(TXD2+)	5			SDA1(TXD1+)	6
				SDB1(TXD1-)									SDB1(TXD1-)
SDB*1					8				SDB2(TXD2-)	7				8
RDA				RDA1(RXD1+)	10				RDA2(RXD2+)	9			RDA1(RXD1+)	10
RDB				RDB1(RXD1-)	12				RDB2(RXD2-)	11			RDB1(RXD1-)	12	R
															*4
SG				SG					SG				SG
					2					2				2
				NC					NC				NC
					1					1				1
*5		*5									*5	*5
				NC					NC				NC
					3					3				3
				NC	4				NC	4			NC	4
				SDA2(TXD2+)	5				SDA1(TXD1+)	6			SDA2(TXD2+)	5
				SDB2(TXD2-)					SDB1(TXD1-)				SDB2(TXD2-)
					7					8				7
				RDA2(RXD2+)	9				RDA1(RXD1+)	10			RDA2(RXD2+)	9
						*5	*5		RDB1(RXD1-)
													RDB2(RXD2-)
				RDB2(RXD2-)	11					12				11
				NC
					13				NC	13			NC	13
				RSA(RTS+)	14				RSA(RTS+)	14			RSA(RTS+)	14
				NC	15				NC	15			NC	15
				RSB(RTS-)	16				RSB(RTS-)	16			RSB(RTS-)	16
				NC	17				NC	17			NC	17
				CSA(CTS+)	18				CSA(CTS+)	18			CSA(CTS+)	18
				NC	19				NC	19			NC	19
				CSB(CTS-)	20				CSB(CTS-)	20			CSB(CTS-)	20
	*1 Use the twisted pair cable for SDA/SDB.
	*2 Set the terminating resistor selector to "110							".
	*3 Set the terminating resistor setting switch of the GOT main unit to "Disable".
			1.4.3 Terminating resistors of GOT
*4		Connect a 110 terminating resistor to the GOT to be a terminal.
	*5 Make sure to ground a cable shield line by applying Class D Grounding.

19 - 16	19. GOT MULTI-DROP CONNECTION
	19.4 Connection Diagram