PROFIBUS is a manufacturer-independent fieldbus standard for applications in manufacturing, process and building automation. PROFIBUS technology is described in fixed terms in DIN 19245 as a German standard and in EN 50170 / IEC 61158 as an international standard. The PROFIBUS standard is thus available to every provider of automation product.
The PROFIBUS family is composed of three types of protocol, each of which is used for different tasks. Of course, devices with all three protocols can communicate with each other in a complex system by means of a PROFIBUS network.
The three types of protocols are: PROFIBUS FMS, DP and PA. Only the two protocol types DP and PA are important for process automation. PROFIBUS DP: the bus for the decentralized periphery The PROFIBUS DP (RS 485) is responsible for communication between the
Controller level of a process automation system and the decentralized periphery in the field, also intrinsic safety (RS485-IS) via DP-Ex barriers into hazardous area.One feature of PROFIBUS DP is its high speed of transmission up to 12 Mbit/s. PROFIBUS PA: extension for process automation
This PROFIBUS variant was developed for the process industry. Communication and power supply to Transmitter and Positioners are handled direct via one 2-line cable and correspond to IEC Standard 61158-2 (named also as MBP, MBP-LP). Intrinsic safety (EEx i) (MBP-IS) installations in Zone 1 / Div.1 are possible. Coupling components (Linking Devices) are used to integrate PA bus lines into the PROFIBUS DP network. This ensures that all information is available in a continuously connected network through the complete PROFIBUS system (DP and PA).
The PROFIBUS DP is interfaced to the IEC61131 controller AC 800M using the PROFIBUS DP-V1 module CI854/CI854A in the AC800M. For high availability redundancy is supported.
The configuration for the PROFIBUS is done with the Control Builder M. The configuration covers the planning of the HW units in the HW tree and the device specific configuration for the master and slave units as well. The device specific configuration data is described within the device specific GSD File provided by the manufacturer of the device. To allow the configuration of the device within the Control Builder M the GSD File has to be converted to a HWD File and inserted to the project. The conversion is done with the GSD Import Tool. The following figure shows the redundant PROFIBUS connected to the redundant AC 800M controller.
| CI801 3BSE022366R1 | DI811 3BSE008552R1 |
| CI830 3BSE013252R1 | DI814 3BUR001454R1 |
| TU847 3BSE022462R1 | DI820 3BSE008512R1 |
| AI820 3BSE008544R1 | DI821 3BSE008550R1 |
| AI825 3BSE036456R1 | DI825 3BSE036373R1 |
| AI830A 3BSE040662R1 | DI830 3BSE013210R1 |
| AI835 3BSE008520R1 | DI831 3BSE013212R1 |
| AI843 3BSE028925R1 | DI840 3BSE020836R1 |
| AI845 3BSE023675R1 | DI885 3BSE013088R1 |
| AI890 3BSC690071R1 | DI890 3BSC690073R1 |
| AI893 3BSC690141R1 | DI880 3BSE028586R1 |
| AI895 3BSC690086R1 | DO810 3BSE008510R1 |
| AI880A 3BSE039293R1 | DO814 3BUR001455R1 |
| AO810V2 3BSE038415R1 | DO820 3BSE008514R1 |
| AO820 3BSE008546R1 | DO840 3BSE020838R1 |
| AO845 3BSE023676R1 | DO890 3BSE690074R1 |
| AO890 3BSC690072R1 | AO895 3BSC690087R1 |