
Glossary
Glossary-4
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Max_T
SDR
Max_T
SDR
is a bus parameter and specifies the maximum protocol processing
time of the responding node (station delay responder).
Min_T
SDR
Min_T
SDR
is a bus parameter and specifies the minimum protocol processing
time of the responding node (station delay responder).
Node
A device that can send and receive data on PROFIBUS as a master or slave.
Optical power budget (FO)
This is available between a sender and receiver on a fiber-optic link. It indicates
the difference between the optical power coupled into a particular fiber by the
optical transmitter and the input power required by an optical receiver for reliable
signal detection.
Optical power loss (FO)
The optical power loss is the cumulative value of all the losses occurring in the
fiber-optic transmission path. These are due mainly to the attenuation of the fiber
itself and the splices and couplings. The optical power loss must be less than the
optical power budget available between the transmitter and receiver.
PROFIBUS
PROcess FIeld BUS, European process and fieldbus standard specified in the
PROFIBUS standard (EN 50 170, Volume 2, PROFIBUS).
This specifies the functional, electrical and mechanical characteristics of a bit-se-
rial fieldbus system.
PROFIBUS is a bus system that networks PROFIBUS-compatible automation
systems and field devices at the cell and field level. PROFIBUS exists with the
DP protocol (= Distributed Peripheral I/Os), FMS protocol (= Fieldbus Message
Specification) or PA protocol (= Process Automation).
PROFIBUS address
To identify it uniquely, every station must be assigned a PROFIBUS address.
A PC/PG or the ET 200 Handheld have the PROFIBUS address ”0”.
Master and slaves have a PROFIBUS address in the range 1 to 125.
Summary of Contents for SIMATIC NET PROFIBUS
Page 10: ...Contents viii PROFIBUS Networks SIMATIC NET 6GK1970 5CA20 0AA1 Release 2 05 2000 ...
Page 11: ...PROFIBUS NETWORKS 1 ...
Page 26: ...PROFIBUS NETWORKS 1 16 PROFIBUS Networks SIMATIC NET 6GK1970 5CA20 0AA1 Release 2 05 2000 ...
Page 241: ...A 1 PROFIBUS Networks SIMATIC NET 6GK1970 5CA20 0AA1 Release 2 05 2000 Testing PROFIBUS A ...
Page 254: ...Testing PROFIBUS A 14 PROFIBUS Networks SIMATIC NET 6GK1970 5CA20 0AA1 Release 2 05 2000 ...
Page 288: ...Installing LAN Cables C 26 PROFIBUS Networks SIMATIC NET 6GK1970 5CA20 0AA1 Release 2 05 2000 ...
Page 325: ...F 1 PROFIBUS Networks SIMATIC NET 6GK1970 5CA20 0AA1 Release 2 05 2000 Dimension Drawings F ...
Page 338: ...Dimension Drawings F 14 PROFIBUS Networks SIMATIC NET 6GK1970 5CA20 0AA1 Release 2 05 2000 ...
Page 396: ...Infrared Link Modul ILM 6ZB530 3AC30 0BA1 54 Copyright by Siemens ...
Page 434: ......
Page 438: ...Contents ii PROFIBUS Optical Bus Terminal OBT C79000 G8976 C122 02 Contents ...
Page 450: ...Network Topology 4 4 PROFIBUS Optical Bus Terminal OBT C79000 G8976 C122 02 ...
Page 458: ...Installation and Startup 5 8 PROFIBUS Optical Bus Terminal OBT C79000 G8976 C122 02 ...
Page 460: ...Troubleshooting 6 2 PROFIBUS Optical Bus Terminal OBT C79000 G8976 C122 02 ...
Page 464: ...Technical Specifications 7 4 PROFIBUS Optical Bus Terminal OBT C79000 G8976 C122 02 ...
Page 468: ...References 9 2 PROFIBUS Optical Bus Terminal OBT C79000 G8976 C122 02 ...
Page 470: ...Abbreviations 10 2 PROFIBUS Optical Bus Terminal OBT C79000 G8976 C122 02 ...
Page 478: ...References I 4 PROFIBUS Networks SIMATIC NET 6GK1970 5CA20 0AA1 Release 2 05 2000 ...
Page 488: ...Glossary Glossary 8 PROFIBUS Networks SIMATIC NET 6GK1970 5CA20 0AA1 Release 2 05 2000 ...