Siemens SIMATIC NET PROFIBUS manual Contents

Contents

Contents

1	PROFIBUS NETWORKS		1-1
	1.1	Local Area Networks in Manufacturing and Process Automation	1-2
	1.1.1	General Introduction	1-2
	1.1.2	Overview of the SIMATIC NET System	1-3
	1.2	Basics of the PROFIBUS Network	1-5
	1.2.1	Standards	1-7
	1.2.2	Access Techniques	1-8
	1.2.3	Transmission Techniques	1-9
	1.2.4	Transmission Techniques According to EIA Standard RS-485	1-10
	1.2.5	Transmission Techniques for Optical Components	1-12
	1.2.6	Transmission Technique for Wireless Infrared Technology	1-14
	1.2.7	Transmission Technique for PROFIBUS-PA	1-15
2	Topologies of SIMATIC NET PROFIBUS Networks		2-1
	2.1	Topologies of RS-485 Networks	2-2
	2.1.1	Components for Transmission Rates up to 1.5 Mbps	2-3

2.1.2Components for Transmission Rates up to

12 Mbps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

	2.2	Topologies of Optical Networks	2-5
	2.2.1	Topology with Integrated Optical Interfaces	2-6
	2.2.2	Topologies with OLMs	2-7
	2.2.3	Combination of Integrated Optical Interfaces and OLMs	2-13
	2.3	Topologies of Wireless Networks	2-14
	2.4	Topologies with PROFIBUS-PA	2-17
	2.5	Connectivity Devices	2-20
	2.5.1	DP/DP Coupler	2-20
	2.5.2	Connecting to PROFIBUS-PA	2-22
	2.5.3	DP/PA Coupler	2-23
	2.5.4	DP/PA Link	2-25
	2.5.5	Connecting PROFIBUS-DP to RS-232C	2-28
	2.5.6	Connecting with the DP/AS-Interface Link 65	2-30
	2.5.7	Connecting with the DP/AS-Interface Link 20	2-33
	2.5.8	Connecting PROFIBUS-DP to instabus EIB	2-36
3	Configuring Networks		3-1
	3.1	Configuring Electrical Networks	3-2
	3.1.1	Segments for Transmission Rates up to a Maximum of 500 Kbps	3-3
	3.1.2	Segments for a Transmission Rate of 1.5 Mbps	3-4

3.1.3Segments for Transmission Rates up to a Maximum of

	12 Mbps	3-8
3.1.4	Configuring Electrical Networks with RS-485 Repeaters	3-9
3.2	Configuring Optical Networks	3-11
3.2.1	How a Fiber-Optic Cable Transmission System Works	3-12
3.2.2	Optical Power Budget of a Fiber-Optic Transmission System	3-14
3.2.3	Cable Lengths for Plastic and PCF FO Paths	3-17
3.2.4	Calculating the Power Budget of Glass Fiber Optical Links with OLMs . .	3-18
PROFIBUS Networks SIMATIC NET		iii
6GK1970-5CA20-0AA1 Release 2 05/2000