This protocol was not appropriate for less complex messages or communication on a wider, more complicated network. Application profiles allow users to combine their requirements for a specific solution, and they will be discussed in more detail shortly. It does hold a very important unique characteristic, though. This media, along with the PA application profile supports power over the bus. In explosive environments, though, that power can lead to sparks that induce explosions. It permits transmission of both data and power.
The technology steps the power down, though. A smaller power reduces, or nearly eliminates, the possibility of explosion. Buses using MBP can reach meters and can support branches. There are many profiles that combine standards for transmission media, communication protocol FMS, DP-V0, etc… , and unique protocols.
Each application profile is tailored to a specific use, and new profiles appear regularly. To list them all would be cumbersome.
PROFIsafe uses additional software to create a high-integrity network. This network is useful in situations where high safety is a requirement. For suppliers and manufacturers to be certified in PROFIsafe, they must maintain high standards in quality. PROFIdrive was created for motion control applications. In this program, a device is sent to an independent laboratory for testing. The device then undergoes a comprehensive series of tests, including Hardware, Conformity, and Function tests, among others.
A cycle will consist of a master sending outputs to, and receiving inputs from all of its devices, and then repeating the cycle. This process also includes a device-, module-, and channel-specific diagnostics. And those cables use the standard DB9 or M12 connectors. This range of speeds can accommodate nearly every application. There are some instances under which copper wired transmission technology reaches its limits, i. In these cases, optical transmission via fiber cables is available.
In a master-slave interaction, the master has unidirectional control over all its slave devices and processes. The controller will always be the master, and the IO devices will always be slaves. The polled slave answers the prompting master with a response message. And the seventh layer has the interface connecting the communication and application.
DP lives here. The master controller, PC, etc. The master also needs to exchange setting data with the slaves. For that, it uses the acyclical mode. You can have class 1 and class 2 masters, with authorization passing from the active master to the second master using the token-passing principle. It resembles DP in areas such as cable length, intrinsic operation, and more. However, device specs here use function blocks, where we find classifications such as input, output, and internal parameters.
It has a simpler setup than a standard analog system, with transparent access to device data using description files. PROFIdrive shows up in factory automation, defining access methods, device behavior, and data formats. It communicates on simple frequency converters to servo controllers. PROFIsafe, as you can probably guess, assists in safety applications.
You can use this protocol in applications up to SIL 3. Couplers send physical bus characteristics between DP and PA networks. Furthermore, they do so transparently, bringing the networks together rather than directing the action.
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