Schneider Electric LUFP7 user manual Communications between other stations Performance Results

7. Appendix A: Technical Characteristics

Profibus-DP	• Maximum number of stations: 32 stations per segment, repeater included; up to
characteristics	126 stations with all three repeaters (repeaters included). Address 126 is reserved
(cont'd)	and should therefore not be used for exchanging data.
	• Possible types of stations: there are three types of Profibus-DP stations:
	- Class 1 DP master (DPM1): PLC, PC, etc. exchanging information with DP slaves.
	- Class 2 DP master (DPM2): A programming, bus configurating, or commissionning
	device, used to configure the Profibus-DP network upon commissioning and operation,
	or supervision.
	- DP slave: Peripheral device that exchanges data cyclically with “its” active DPM1
	station.
	• Mono-master or multi-master network.
	• Hybrid access method: Acyclical communication between masters using the
	transfer of a token (synchronisation);							cyclical master/slaves communications
	(application data transfers).
	• Up to 244 input bytes and 244 output bytes per DP slave; typical exchange of
	32 bytes per slave.
	• Operating modes: Functional operations (cyclical I/O exchanges), resetting to
	zero (input reading and output resetting), or disruption (only inter-master
	functions are allowed).
	• Input (Freeze-Mode) and/or output (Sync-Mode) synchronisation of all DP
	slaves.
	• Other services offered:
	- Verification of DP slaves configuration.
	- Advanced diagnostics on three hierarchical levels.
	- Allocation of DP slaves addresses.
	- DP slaves provided with a watchdog triggering timeout.
	- Protection of DP slaves' access to I/O.
	• Possibility to connect or disconnect a station without impacting on
	communications between other stations.
	• Performance
	results:			diagram
	presenting the				bus
	cycle time of a mono-
	master		Profibus-DP
	network, according to
	the	number		of	DP
	slaves		present			on
	that	network		(with		2
	input	bytes		and		2
	output bytes per DP
	slave).
	Test conditions: minimum slave time interval = 200 µs;								TSDI = 37 × duration of
	one bit;		TSDR = 11 × duration of one bit.
Profibus-DP LUFP7	• Network type: PROFIBUS EN 50 170 (DIN 19245).
gateway specifics	• Protocol version: v1.10.
	• Standard			connections: Female			SUB-D 9-point		connector,	which is
	recommended for baud rates exceeding 1.5 Mbits/s.
	• All baud rates supported (9.6, 19.2, 93.75, 187.5, 500, 1,500, 3,000, 6,000 and
	12,000 kbits/s);				automatic baud rate detection.
	• "DP slave" Profibus-DP station.
	• Cyclical		data		transmissions: up		to	244 input bytes	and 244 output bytes;
	416 bytes exchanged maximum, inputs and outputs								included;	24 modules
	maximum used to configure these I/O.

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