IS200VAICH1D IS200VAICH1D IS200VAICH1D interfered with, and inconvenient maintenance. DCS is generally composed of operator station, control station, complex structure, high cost. And DCS is not an open system, poor interoperability, difficult to achieve data sharing. Pc-based FCS, on the other hand, completely overcomes these shortcomings. (1) in the FCS, by means of field bus technology,…
IS200VAICH1C IS200VAICH1C IS200VAICH1C international standard and draft, together with its technical advantages, so it is very promising to become a major international standard in the future. The FF bus provides two physical layer standards, Hl and H2. Hl is a low-speed bus for process control, with a transmission rate of 31.25Kbps and a transmission distance…
IS200TVIBH2B IS200TVIBH2B IS200TVIBH2B diagnosis function of the field equipment. 2.6 High adaptability to the environment Fieldbus is designed for industrial field, it can use twisted pair, coaxial cable, optical cable, power line and wireless way to transmit data, has a strong anti-interference ability. The commonly used data transmission line is cheap twisted pair, and allows…
IS200TVBRH2A IS200TVBRH2A IS200TVBRH2A the same control policy and “plug and play”. Devices with the same performance from different vendors can be interchanged. 2.3 Flexible Network Topology Fieldbus control system can be composed of different network topologies according to complex field conditions, such as tree, star, bus and hierarchical network structure. 2.4 Highly decentralized system…
IS200TTURH1C IS200TTURH1C IS200TTURH1C transmitted to the control equipment in the control room through the fieldbus. The control equipment in the control room is used to monitor the running status of each field instrument, save the uploaded data of each intelligent instrument, and complete the advanced control functions that cannot be completed by a small number…
IS200TTURH1B IS200TTURH1B IS200TTURH1B the so-called DCS system. Fieldbus is born in this situation. Fieldbus technology and its characteristics The fieldbus technology is developed in the late 80 s the scene of an advanced industrial control technology, it combines digital communication technology, computer technology, automatic control technology, network technology and intelligent instruments such as a…
IS200TTRUH1C IS200TTRUH1C IS200TTRUH1C distributed control system from this point of view is essentially a closed and special, not interoperable distributed control system and DCS cost is expensive. In this case, the users of the network control system to open and reduce the cost of urgent requirements. 4. Fieldbus control system (FCS) : FCS is born…
IS200TTPWH1A IS200TTPWH1A IS200TTPWH1A scheduling and arrangement. The shortage is that the controller itself is very demanding, must have enough processing power and extremely high reliability, when the system task increases, the efficiency and reliability of the controller will decline sharply. 3. Distributed control system (DCS) : Distributed control system (DCS) dominated in the 1980s and…
IS200TSVOH1B IS200TSVOH1B IS200TSVOH1B complete logical operations, sequential control, timing, counting and arithmetic operations, it also has the ability of “digital or analog input/output control”, and is very easy to “industrial control systems into one”, easy to “expand”. The definition also emphasizes that the programmable controller is directly applied to the industrial environment, it must have…
IS200TSVCH1A IS200TSVCH1A IS200TSVCH1A memory to store instructions for performing functions such as logic, sequence, timing, counting, and calculus, and for controlling various mechanical or production processes through digital or analog inputs and outputs. A digital electronic computer is regarded as a PLC if it is used to perform the functions of a PLC, but does…