Scada System

4)LAN (Local Area Network)-A LAN is a group of computers or devices connected together through a local network.LAN connections are usually very inexpensive.They are also usually very fast.LAN connections are usually within the same building.

The upgrade project consisted of the design & construction of a new Programmable Logic Controller (PLC) and Supervisory Control And Data Acquisition (SCADA) system to eventually replace the existing legacy Honeywell/Experion system and equipment which is nearing the end of its life cycle. The new chemical sludge handling PLC, incorporates hot standby Siemens S7400H processors utilising a Media Redundancy Protocol (MRP) remote Input/Output (RIO) network allowing simultaneous PLC and network failure without process interruption.

A: LAN: LAN stands for Local Area Network. LAN is a network which cover a small area like colleges, schools or buildings.

Determine which framework assets can be found at the distinctive security rings and how the rings control subject access to objects.

A LAN is a ‘Local Area Network’. It is a small network of computers most often

When setting up a LAN the architecture that you decide to choose is important. There are several factors that are decided when choosing said architecture, some of these being network speeds, types of cables, and access control mechanisms like collision detection (Team, 2011). The most common on in today’s LANs is Ethernet. These can be either wireless, wired, or a hybrid of both.

CE 1.3.3 I studied plant system architecture and the interfaces with the distributed control system (DCS) and emergency control system (ESD) of Honeywell,as this was key aspect for interface. Since the data like signal values, alarms, trips etc. from MCMS was serially interfaced by either Modbus or OPC(OLE for Process Control) to DCS .The trip signals from MCMS system was hardwired signals to ESD, since these are very critical signals for machine shut down.

It is generally limited to a geographic area such as a writing lab, school, or building. Rarely are LAN computers more than a mile apart. In a typical LAN configuration, one computer is designated as the file server. It stores all of the software that controls the network, as well as the software that can be shared by the computers attached to the network. Computers connected to the file server are called workstations. The workstations can be less powerful than the file server, and they may have additional software on their hard drives. On many LANs, cables are used to connect the network interface cards in each computer; other LANs may be wireless.

6. Why is Ethernet technology more appealing to users than the rest of the LAN technologies?

if an attacker manages to enter the SCADA network, it will be difficult to carry out any sort of attack. The monitoring

Requirement for interoperability, interfacing with systems operating environment (including; capability, temperature, humidity, radiation and robustness).

Local area network (LAN) is a wireless network that is mostly used in a work place or small building. To be able to make this work, you will need an access point connected to a switch to create the wireless network. There are different types of hardware components that are used to set a wireless network up such as network adaptors, Ethernet cables and a hub.

Step-1 – intent: A need was realized. In early 1995, the Swedish groups (Sahlqvist and the Marta) were investigating the acquisition of new computer software to run their parts operations. The main reasons where heavy instability of their existing systems. Frequent system failures came from large amounts of modifications of their source code. As a result, they not always rely on the data thorough there present system.

When the first computers were made, they couldn’t talk to each other if they weren’t the same type. But now with the standardising of components, it is now easier than ever for different computers to connect to each other in a LAN (Local Area Network).

The interview session has been done by include an open-ended and closed-ended question which are related to the implemented project. Next, sampling technique is executed by system analyst who does evaluation to the current system or prototype. These processes give feedback in evaluation form that filled after tested the system. Lastly, observation is performed by using questionnaire form. According to Burch (1992), the questionnaire is analyzed and transform into structured form that easy to understand. After all information has been collected, structuring of system requirement takes place. It focused on development process modeling which perform “graphically representing the process, or actions, that capture, manipulate, store, and distribute data between a system and environment” (Hoffer, George, & Valacich, 2012, p. 182). In this step, Data flow diagram (DFD) is structured by system analyst using special tools and techniques to create a decision table. According to Hoffer, George and Valacich (2012), decision table is a “diagram of process logic where the logic is reasonably complicated” (p. 200). This table is useful to help system analyst to make a decision toward the project. Then all information’s gained from this phase are documented in System Analysis Report (SAR) that acts as a guideline or reference to the future system development project (Burch, 1992).