SControl configuration tree 1.1.1 Configuration tree panel As is shown in Figure 5, on the left side of the SControl. main panel is the operation display area, which displays a typical “configuration. tree” under current configuration. The “configuration. tree” has visualized the branching structure of the configuration. information through laminated layout. The user can easily [...]
1.1Introduction to the main panel and menu of SControl please refer to Figure 1‑1 Figure 1‑1 Main interface After the software is started up, the user will enter the main panel of the configuration environment, which consists of title field, toolbar, menu area, operation display area and status bar. Title bar ―― It displays name [...]
1 Outline of configuration software 1.1 Definition of WebField Control System Configuration Based on the technologies of JX-300, JX-300X, WebField ECS-100 has integrated state-of-art field bus technology, imbedded software technology, advanced control technology, and web technologies. Since the system is complicated and designed for general purposes, many of its functions and matching parameters such as [...]
April 24, 2009- “Seminar on the Application of DCS on Large-scale Petrochemical Units”, co-oganized by SINOPEC and SUPCON, raised its curtain in Wuhan . Top leaders and experts form China Instruments Manufacturer Associaton (CIMA), China Petroleum & Chemical Corporation (SINOPEC), China National Petroleum Corporation (CNPC) and SUPCON attended the seminar, together with over 120 specialities of [...]
Supcon DCS system is more superior then Siemens in many resprects We are breaking a lot of good news soon
The interlock contacts installed in the previous section’s motor control circuit work fine, but the motor will run only as long as each pushbutton switch is held down. If we wanted to keep the motor running even after the operator takes his or her hand off the control switch(es), we could change the circuit in [...]
Now that we understand how the PLC processes inputs, outputs, and the actual program we are almost ready to start writing a program. But first lets see how a relay actually works. After all, the main purpose of a plc is to replace “real-world” relays. We can think of a relay as an electromagnetic switch. [...]
Now that we understand how inputs and outputs are processed by the plc, let’s look at a variation of our regular outputs. Regular output coils are of course an essential part of our programs but we must remember that they are only TRUE when ALL INSTRUCTIONS before them on the rung are also TRUE. What [...]
Now that we’ve seen how registers work, let’s process a program like PLCs do to enhance our understanding of how the program gets scanned. Let’s consider the following application: We are controlling lubricating oil being dispensed from a tank. This is possible by using two sensors. We put one near the bottom and one near [...]
Let’s watch what happens in this program scan by scan. Initially the tank is empty. Therefore, input 0000 is TRUE and input 0001 is also TRUE. Scan 1 Scan 2-100 Gradually the tank fills because 500(fill motor) is on. After 100 scans the oil level rises above the low level sensor and it becomes open. [...]
Now that we understand the hardware part of the picture, let’s dive right into the software part. We’ll take a look at each part of the puzzle by defining a few of the common terms. Ever wondered what phrases like 9600-8-N-1 meant? Do you use software-handshaking or hardware-handshaking at formal parties for a greeting? If [...]
Let’s now see how a timer works. What is a timer? Its exactly what the word says… it is an instruction that waits a set amount of time before doing something. Sounds simple doesn’t it. When we look at the different kinds of timers available the fun begins. As always, different types of timers are [...]
