Siemens 6RA70 specifications Configuration of serial interfaces on basic converter, 10-78

PNU	Description	Value range	No. indices	See
		[Unit]	Factory	Change
		Steps	setting	(Access /
			Type	Status)

10.40 Configuration of serial interfaces on basic converter

G-SST 1 (RS485 / RS232 on X300) (see also Section 8, Sheet G170 and Section 9 of Operating Instructions 6RX1700-0AD**)
			0, 2, 8, 9
P780	Selection of protocol for G-SST1 basic converter interface				Ind: None	P052 = 3
*	0	Setting has no function	1		FS=2	P051 = 40
(G170)					Type: O2	Offline
	2	USS protocol
	8	for factory purposes
	9	For internal factory test purposes
P781	Number of process data for G-SST1		0 to 16		Ind: None	P052 = 3
*	When P780 = 0 or 9 is selected: Parameter is irrelevant		1		FS=2	P051 = 40
(G170)					Type: O2	Offline
	When USS protocol (P780=2) is selected: Number of PZD elements
	0	No process data are expected or sent in the USS protocol
	1...16 Number of process data words in USS protocol (same number
		applies to transmission and receipt)
		The received PZD elements (1 to max. 16) are available at
		connectors (K2001 to K2016) and, in some cases, bit-serially at
		binectors for "internal wiring" purposes.
		The PZD elements to be transmitted (1 to max. 16) are selected
		in parameters P784.01 to P784.16.
P782	Length of parameter jobs for G-SST1		0, 3, 4, 127		Ind: None	P052 = 3
*			1		FS=127	P051 = 40
(G170)	This parameter is effective only when P780=2 (USS protocol).				Type: O2	Offline
	0	No PKW data are expected or sent in the USS protocol.
	3, 4	3 or 4 PKW data words are expected in the USS protocol and 3
		or 4 PKW data words are also sent (for transmission of
		parameter values).
	127	Number of PKWs is determined by the telegram length
P783	Baud rate for G-SST1		1 to 13		Ind: None	P052 = 3
*	1	300 baud	1		FS=6	P051 = 40
(G170)					Type: O2	Offline
	2	600 baud
	3	1200 baud
	4	2400 baud
	5	4800 baud
	6	9600 baud
	7	19200 baud
	8	38400 baud
	9	56700 baud
	11	93750 baud
	13	187500 baud
P784	Source for transmit data for G-SST1		All connector		Ind: 16	P052 = 3
*	Selection of connectors to be transferred as transmit data to the USS		numbers		FS=	P051 = 40
(G170)			1		i001: 32	Offline
	master via USS interface 1.
					i002: 167
	i001:	Selection for word 1			i003: 0
					i004: 33
	i002:	Selection for word 2
					i005-i016: 0
	...
		Selection for word 16			Type: L2
	i016:
	Applicable settings:
	0 = connector K0000
	1 = connector K0001
	etc.
P785	Options for G-SST1		0 to 1		Ind: 2	P052 = 3
	i001:	0 = Bus terminator OFF	1		FS=0	P051 = 40
					Type: O2	Offline
(G170)		1 = Bus terminator ON
	i002:	0 = Bit 10 of the 1st receive word does not function as "Control
		by PLC".
		1 = Bit 10 of the 1st receive word does function as "Control by
		PLC“, i.e. when bit 10 = 0, all other bits of the 1st receive word,
		as well as receive words 2 to 16, are not written to connectors
		K2001 to K2016, or to binectors B2100 to B2915. All these
		connectors and binectors retain their old values.
10-78				SIEMENS Energy & Automation
		SIMOREG DC Master Base Drive Panel Operating Instructions