We have the experience and the reputation in the field to deliver the products customers need to expedite their projects and assure quality every step of the way. Email: Main: info idx. Privacy Policy Terms and Conditions. Purchase Now. User Manual. Typical serial applications Typical serial applications include variable frequency drives, sensors, actuators, human-machine interfaces, barcode readers, RFID readers, and industrial scales among others.
Product Information. Pre-defined for Modbus RTU. Cost-efficient solution for reliable star networks Due to the demands for high-speed networks, We will ensure your network is up and running quickly, safely, and efficiently to minimise disruption to your environment.
We also carry out testing to ensure our installed solution meets the specification. Email: Main: info idx. Privacy Policy Terms and Conditions. Industrial ICT Solutions We specialise in industrial applications, everything from process control systems, sensor technology, and systems engineering to custom development, data acquisition, logging, monitoring, and alerting. View solution. Control Network Audits Identify potential threats and discover inefficiencies in your infrastructure.
View service. Control Network Call Outs System failures, connectivity issues, and network latency can disrupt performance and throughput, costing you more resources. These profiles specify how the manufacturers should implement the communication objects, variables and parameters, according to the class of work of the equipment. And there is also the parameters classification:. These equipments are implemented in accordance with the function blocks model, where parameters are grouped and ensure uniform and systematic access to the information.
Several blocks and functions are necessary, depending of the operational mode and phase. Basically, the following blocks may be cited:. Some equipment have several AI and AOs blocks that are called multi-channel equipments, where there must be several TRD blocks associated to the hardware.
By that, each manufacturer may develop his particularities as functional blocks, going further than what is defined on the profile. This adds value to the equipments and makes possible the development competition and offering additional features in the different equipments. These interfaces give the user configuration, parameterization, calibration versatility and flexibility, and mainly download and upload mechanisms in the phase of project planning and commissioning. The demand for more resources in the automation and process control area through the advent of digital technology and the fast expansion of Fieldbus favored the development of the technology devoted to the diagnostics and treatment of safe failures.
Mainly, aiming at the protection of people, equipments and the environment, always having for goal the ideal safety system. This safe system requires, in other words, that the data and information may be validated in relation to its values and time domain, one that must be applicable to the system in its entirety. This implies ensuring that the data received was sent correctly and the sender is also de right transmitter.
Furthermore, that this be the expected information, at a given moment and that the incoming information was sequentially correct, etc. Currently, the most typical example of international safety standard, one that involves the most part of system developers and implementers with safety is the IEC This standard shows the activities involved in the entire life cycle of programmable electronic systems concerning safety.
Therefore, it deals both to hardware and software requirements. The danger with accidents in industrial processes is large and the probability of their happening depends on the probability of system failures. This profile supports safe applications in a wide area of field applications. And, instead of using special buses for the safety functions, it permits the implementation of safe automation through an open solution in the PROFIBUS standard, which guarantees cost-effective cabling, consistency of the system regarding the parameterization and remote diagnostics functions.
It guarantees safe decentralized control systems through fail-safe communication and safe mechanism devices and equipments. The safe transmission functions include every measure that may be deterministically found in possible dangerous failures.
These may be added to the standard transmission system, aiming at minimizing its effects. They included, e. For instance, during communication it is possible that part of a frame is lost, part of it may be repeated, or yet, that it appears in the wrong order or even late.
On PROFIsafe, a few preventive measures may be taken, aiming at enclosing possible causes of failure or that these may happen with safety, should they occur:.
These measures must be analyzed and taken on a single fail-safe data unit. See below the F message model. PROFIsafe is a one-channel software solution that is implemented as an additional layer above layer 7 on the devices. A great advantage is that it can be implemented without changes, to protect the users investment.
On the physical means RS or H1 The acyclic communication is used for irrelevant levels of data safety. It ensures very short response times, which are recommended in intrinsically safe manufactures and operations, in compliance with the requirements of the process control area.
PROFIsafe uses the error detecting mechanism to keep the desired safety levels. This profile detects communication errors such as duplicated frames, lost of frames, incorrect frame sequences, corrupted frames, frame delays and wrong frame addressing. The PROFIsafe profiles use the redundancy of information to validate the communication between two devices. This type of frame may deal with a maximum bytes process data.
PROFIsafe reserves bytes from this total for the safety data. Beyond that, 4 or 6 bytes are treated separately as status and control bytes, depending on the quantity of safe data transmitted. Always two control bytes are sent from each frame, one for status and the other with the frame sequence. The four remaining bytes are saved for the checksum generated to protect redundant safe information. A small amount of relevant safe data transmitted involves one bit CRC and 4 bytes control.
For transmissions over 12 safe data bytes until , one bit CRC is used with 6-byte control. Figure 21 shows the DP frame model that includes in the information the frame known to that frame, in addition to fail-safe data a maximum bytes in bytes, due to its limitation of 64 words exchanged in a single time between the Host and the DP master , as well as the parity safety resources and FCS Frame Checking Sequence.
Figure 22 shows the F message model safe message , where may be seen the bytes for integrity control and error minimization previously described as preventive measures.
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