Abstract - Twenty years back, machines were basic, and work in industries was, generally, manual in nature. Machines were intended to be physically controlled. Today, if individuals search for around them will discover numerous things that have the control frameworks, which are important to compose the perplexing gadgets. The control framework is of essential significance for gadgets and machines in processing plants, aeroplanes, vehicles, and even in some home gadgets. Today, it is hard for individuals to evade the utilization of control frameworks in the workplace. Without mechanized control frameworks, industrial facilities face numerous issues, which would somehow or another be extremely elusive an answer for. Keeping this in mind, The study is an attempt to understand the concept of PLC and its different modes of communication viz-a-viz wired and wireless. Wired communication includes RS485 and Profinet mode, while in Wireless communication IWLAN is used. At present, wired communication is used by MANY MANUFACTURING INDUSTRIES. Wired communication is expensive and space-consuming, so the industries should plan to divert themselves into wireless communication to meet the requirements of technological advancement as well as to embark into INDUSTRY 4.0.
In the previous part [part 4] we talked about IWLAN, now we talk about Scalance W
SCALANCE W Devices
- Supported frequencies: - Two frequencies are used for wireless networks based on 802.11n and 802.11ac standards. They are 2.4 GHz and 5 GHz.
- Data transmission rate: - SCALANCE W components can handle any data rates. From 150 Mbit/s, 300 Mbit/s and 450 Mbit/s, right up to 1733 Mbit/s for wide data transmission.
- Combined with antenna portfolio: - from omnidirectional antennas and directional antennas to RCoax cables, SCALANCE W components can be combined with suitable antennas.
Range of SCALANCE W components is suitable for
use in any application: -
- For use in the control cabinet: - SCALANCE W760 Access Points and SCALANCE W720 Client Modules are the choice for wireless communication from the control cabinet, especially in tight spaces that are difficult to access. The SIMATIC design means that automation components such as the distributed I/O SIMATIC ET 200SP can be incorporated seamlessly in IWLAN network.
- For use inside and outside the control cabinet: - SCALANCE W770 Access Points and SCALANCE W730 Client Modules are the solution for more demanding applications. With data rates up to 300 Mbit/s, it is possible to cover larger wireless ranges. SCALANCE W774 Access Points and W734 Client Modules with the SIMATIC design are the perfect way of ensuring wireless communication between the control system SIMATIC S7-1500 and a SIMATIC ET 200MP. With their IP65 protection class, SCALANCE W778 Access Points and W738 Client Modules are also ideally suited to wireless data transmission in harsh environments.
- For use in harsh environments: - SCALANCE W780 Access Points and SCALANCE W740 Client Modules are reliable, powerful and extremely robust, they are ideal for handling most demanding tasks. Gadgets with IP30 assurance class are reasonable for use in the control bureau, though IP65 gadgets are ideal for use outside the control bureau and under unforgiving natural conditions
- For extremely high bandwidths: - With gigabit data rates of up to 1733 Mbit/s, the WLAN standard IEEE 802.11ac Wave 2 enables the implementation of wireless applications with high bandwidths. The SCALANCE W-1700 supports radio transmission in both industrial and moderate environments. Typical areas of application include networks with high user density and high-performance video transmission. The SCALANCE W1788 Access Points with IP65 protection class are especially suitable for use in harsh industrial environments. In moderate environments, the SCALANCE W1750D Direct Access Points can be used to configure and centrally manage wireless networks with up to 64 Access Points.
ANTENNAS: - - Signal reception is all-important in WLAN
networks. By using the wireless network correctly and the
appropriate components, it is possible to avoid fault from
the outset, thus considerably reducing the commissioning
time. Some typical antennas from siemens include: -
- Omnidirectional antennas to cover a large wireless field in all directions.
- Directional antennas for a directional wireless field.
- Sector or wide-angle antennas for large wireless fields.
- Special antennas for RCoax applications.
RCoax radiating cables: -If conventional antennas
are not suitable for a particular communication
requirement, RCoax may be the solution. Coaxial cables are
robust and easy to install, and they are especially suited for
crane applications, elevators or rail vehicles. With RCoax
radiating cables, usage of Wireless LAN can take place
without any of the restrictions: the RCoax radiating cable
acts as an antenna for SCALANCE W Access Points. The
cable is laid along the route used by the relevant
transmitters/receivers and provides a guaranteed and
reliable wireless connection due to its special radiation
properties.
PLUGs for network components: - Replacement of
SCALANCE W components can be done quickly and
safely in the event of faults.
C-PLUG: - Automatically backs up configuration data and
firmware so that the SCALANCE W-700 can easily be
replaced in the event of faults.
KEY-PLUG: Includes all C-PLUG functions and activates
special additional functions for selected SCALANCE W700 devices.
CLP: In various versions, the CLP stores the configuration
data for the SCALANCE W-1700 family.
IFeatures at a glance: -
- iPCF (industrial Point Coordination Function): ensures required deterministic behaviour and fast roaming in PROFINET and EtherNet/IP applications, including for gross data rates up to 54 Mbit/s.
- IPCF-MC (iPCF Management Channel): ensures required deterministic behaviour and real-time communication in applications with free-moving clients.
- IPRP (industrial Parallel Redundancy Protocol): ensures redundant, reliable WLAN communication.
- IREF (industrial Range Extension Function): makes it possible to cover longer distances with a single Access Point.
BENEFITS and POSSIBILITIES of SOLUTION WITH IWLAN -
- Cable and Connection: - Wireless connections are ideal in cases where laying cables is a complex process. SCALANCE-W from siemens helps provide total flexibility and safe communication at all time without wired connection.
- Secured Communication: - Along with data safety personal safety is also a priority in production and transportation processes. Security standards are maintained by following protocols such as (IEEE802.1X) and encryption. Implementation of Profinet and Profisafe along with stop function from WLAN to assure safety for employees.
- Timing of Data Transmission: - SCALANCE W devices and iFeatures help in quick transmission of data units from Point A to B.
- Reliable Communication: - Along with quick and reliable communication another must point is that there should be no loss of information. SCALANCE W devices identify and fix if error occurs.
- Robust and flexible: - SCALANCE W devices are IP65 approved with ability to sustain in harsh environmental conditions.
- Easy configuration: - Usage of siemens network management system SINEC NMS establishes wireless network with minimal effort. Also, additional components can be added with any problem.
In the next part, we will talk about BELDEN's case study
