6GK1901-1BB10-2AA0
6GK1901-1BB10-2AA0
6GK1901-1BB10-2AA0
6GK1901-1BB10-2AA0
西门子断路代理商
The requirements of users for an open, non-proprietarycommunication system have resulted in the specification andstandardization of the PROFIBUS protocol.
PROFIBUS defines the technical and functional features of a serialfieldbus system, with which the distributed field automationdevices in the lower area (sensor/actuator level) can be networkedup to the mid performance range (cell level).
Standardization according to IEC 61158/EN 50170 secures yourinvestments for the future.
Using the conformity and interoperability test performed by thetest laboratories authorized by PROFIBUS & PROFINET International(PI) and the certification of the devices by PI, users have thesecurity of knowing that the quality and functionality is ranteed,even in multi-vendor installations.
PROFIBUS versionsTwo different PROFIBUS versions have been defined in order tocomply with the widely varying requirements at field level:
PROFIBUS PA (Process Automation) – the version forapplications in process automation. PROFIBUS PA uses theintrinsically safe transmission technology specified in IEC61158-2.
PROFIBUS DP (Distributed Periphery) – this version, which isoptimized for speed, is specifically tailored to the communicationof automation systems with distributed I/O stations and drives.PROFIBUS DP sets itself apart as a result of very short responsetimes and high noise immunity, and replaces cost-intensive,parallel signal transfer with 24 V and measured value transferutilizing 0/4 … 20 mA technology.
设计
Bus participants on PROFIBUS DPPROFIBUS DP makes a distinction between two different masterclasses and one device class:
DP master class 1
For PROFIBUS DP, DP master class 1 is the central component. In adefined and continually repeating message cycle the central masterstation exchanges information with distributed stations (DPdevices).
DP master class 2
Devices of this type (programming, configuring or operator controldevices) are used during commissioning, for configuring the DPsystem, for diagnostics or for operating the active plant orsystem. A DP master class 2 can, for example, read input, output,diagnostic and configuration data of the devices.
DP device
A DP device is an I/O device which receives output information orsetpoints from the DP master, and as response, returns inputinformation, measured values and actual values to the DP master. ADP device never sends data automatically, but only when requestedby the DP master.
The quantity of input and output information depends on the device,and for each DP device in each send direction can be a maximum of244 bytes.
功能
Functional scope in DP masters and DP devicesThe functional scope can differ between DP masters andDP devices. The different functional scopes are classified asDP-V0, DP-V1 and DP-V2.
DP-V0 communication functions
The DP-V0 master functions consist of "Configuration", "ParameterAssignment" and "Reading Diagnostics Data", as well as cyclicreading of input data/actual values and writing outputdata/setpoints.
DP-V1 communication functions
The DP-V1 function expansions make it possible to perform acyclicread and write functions as well as processing cyclic datacommunication. This type of device must be supplied with extensiveparameterization data during start-up and during normal operation.These acyclically transferred parameterization data are only rarelychanged in comparison to the cyclic setpoints, actual values, andmeasured values, and are transferred at lower priority in parallelwith the cyclic high-speed user data transfer. Detailed diagnosticinformation can be transferred in the same way.
DP-V2 communication functions
The extended DP‑V2 master functions mainly comprise functions forisochronous operation and device-to-device communication between DPdevices.
Isochronous mode:
Isochronous mode is implemented by means of an equidistant signalin the bus system. This cyclic, equidistant cycle is sent by the DPmaster to all bus nodes in the form of a bal Control Telegram.Master and devices can then synchronize their applications withthis signal. The signal jitter between cycles is less than1 μs.
Device-to-device communication:
The "publisher/subscriber" model is used to implementdevice-to-device communication. Devices declared as publishers maketheir input data/actual values and measured values available toother devices, the subscribers, for reading. This is performed bysending the response frame to the master as a broadcast.Device-to-device communication is therefore a cyclic process.
集成
PROFIBUS with SINAMICSSINAMICS uses the PROFIBUS DP protocol. SINAMICS drives canonly be used as DP devices.
PROFIBUS with SIMOTIONSIMOTION uses the PROFIBUS DP protocol. SIMOTION can be usedboth as a DP master and a DP device. The DP‑V0, DP‑V1 and DP‑V2communication functions are supported.