PLC以往要讀取模組的資料，
都要透過PLC 階梯圖，先設定參數，再讀取。
但PLC廠商知道，有這種能力的人越來越少，
所以開發外掛體，
寫PLC的人，只要選一選參數都幫你直接寫到暫存器裡了。
很方面。果然科技始終於人性(墮性)。
一旦出問題，就只能找PLC原廠處理，因為使用外掛的人，沒有能力處理。
外掛也不是PLC的程式，也無從檢查。
2011年7月13日 星期三
2011年7月12日 星期二
PLC Automation Training - An Overview
Most of the industries use control systems and automation entirely deals with it. It uses the information technologies and control system and reduces the human manual work in the production of goods and services. Most of the people say automation as a step beyond mechanization because in mechanization the human operators do the work with applying their muscles for work, but the automation has reduced it. Beyond manufacturing industries, it has been used in wide range of industries and the automation plays a major role in world economy and has replaced all manual systems. Most of the industries prefer for people who were well trained in PLC automation training. A doubt may arise in your mind, why industries are looking for automation training? What is the advantage of this automation?
The automation have many advantages such as it replaces human operators involving in tough or monotonous work that involves physical strain and also replaces humans in tasks that are dangerous. Last, but not least is it improves the economy of industries, society and humanity. SCADA and PLC are the most important automation tools and without this, the automation fails to meet the demands. The PLC is a small computer that has dedicated operating system and the operating system processes the interrupts that are incoming in real-time and it is what it is called as a real-time operating system. Through input lines, the interrupts are fed and the output sensors monitor various variables. The PLC program evaluates the input events and generates the output values which are sent via output lines. So that's why the automation industries use this system and SCADA is used for controlling and monitoring activities.
The automation field is more versatile than before and the PLC programs are send for monitoring data to a central control place called SCADA. These two are essential in automation industries and if you are interested in pursuing training in automation, then learn the PLC SCADA training in Chennai so that you can get yourself placed in most reputed industries. The industrialist are looking for more number of candidates for recruitment and the only thing you need to do is you need to be familiar yourself with PLC automation training. In future, this field will have more improvement and event they can look for candidates in thousands of numbers because a thing that is economical in nature is more preferred by the industries because it can get them more profit and also a good name in the market and in between the people.
Automation field is progressing and if you put a graph and analyze, you can see the graph, it never tends to fall down and it always increases and will also increase more in future. Make use of this field by learning this automation training in best PLC automation training centers in Chennai so that you can get compulsory placement in reputed industries. A good path with no thorns in between is shown to you and it is in your hands whether you are going to choose a path with thorn or a path without any thorns.
Article Source: http://EzineArticles.com/5700927
NC Device Architecture and Technology
C embedded Nc architecture: The structure is based on the traditional structure,
embedded PC, its purpose is not only inherited the accumulation of numerical
software for many years, but also use PC-rich software resources. More complex
structure of such systems. PC-based architecture: The structure is based on
standard PC = machine's hardware is based on a general-purpose operating
system (such as Windows, LINIX, etc.) developed by the support of
real-time multi-task system, the realization of a variety of numerical functions.
It is widely used in modern numerical control device architecture,
based on the structure of NC devices with high performance and low cost and
long vitality.
A typical PC-based CNC visual architecture in Figure 1, the hardware block
diagram in Figure 2.
Figure 1 CNC visual map The following functions to discuss
the plan from 8-4 in the role of the various hardware modules.
1. Computer motherboards and system bus board (motherboard) computer
motherboard is the core of CNC devices, as is PC-based architecture, the
hardware modules are compatible with standard PC-bus. The aim is to use
PC-rich software and hardware resources, improve the system adaptability
and openness. Lower prices, reduce new product development cycle.
CNC equipment and computer systems of ordinary commercial PC,
in the realization of a slightly different structure. Starting from the system's
reliability, its board and motherboard are separated, that is,
the system bus is a single passive motherboard, motherboard is made of
card forms, and more integrated, so-called ALL-IN-ONE motherboard.
This board includes the following functional structure: CPU chips and peripheral chips.
memory unit, cache and peripheral chips.
communication interface (serial, parallel port, keyboard interface).
soft and hard drive interfaces. The composition of the functional principle and
the principle of common micro-computer exactly the same, not repeat them here.
The main role of the computer motherboard is.
Input to the CNC device in a variety of data, information (parts processing,
various I / O information, etc.) for the corresponding arithmetic and logic operations,
and in accordance with the results of their treatment,
to control commands issued by other functional modules, data transmission,
so that the user's instructions are carried out.
Figure 2 CNC device hardware structure
System bus (motherboard) is the digital information transmitted by a
group composedof the physical wire, it is the CNC device to exchange
data or informationwithin the channel, the composition of principle
and the principle of common micro-computer exactly the same.
Pc as a general industrial machine is
independent of the passive bus, four-layer motherboard printed circuit board,
that is,on both sides of the plate alignment surface for the signal line,
while in the middle for the power supply and ground, the reliability
of more than two board.
The specification of 6 slots, 8 slots, 12 slots and 14 slots, etc.,
the user can function under the CNC device to select the number plate.
2. Display module display module that graphics card is a highly versatile module.
In the CNC device, CRT display is a very important function,
it is an important human-machine communication medium,
to provide users with an intuitive operating environment,
allowing users to quickly familiar with its operation.
The main role of graphics card are: to receive control commands from the CPU,
and display the data used,
the scan with the CRT signal modulated to produce the required CRT
Display video signals from the CRT's electron gun to scan the screen,
resulting in screen required.Graphics card not ready for this hardware
on the market to buy,and it also has very rich support for software,
so no user development.
3. Import / export module input A / out module is a standard PC machine
modules? Multifunction card, generally does not require users to their
own development. Input A / out module is CNC device and the outside
world data and information exchange in the interface board, the CNC
device in the CPU via the interface can access data from external input
devices, CNC devices can also be sent to an external output device data.
If the computer motherboard is ALL? IN? ONE motherboard,
motherboard has integrated this feature because, this board can be omitted.
Above three parts, matched with the keyboard, power supply and chassis
, in fact, is a general-purpose micro-computer system,
this system is the core of CNC equipment. In a sense,
their grades and performance determine the grade and performance of
CNC equipment, thus, CNC Control Computer Subsystem rational use is essential.
4. E-Disk (memory module) is a CNC device-specific electronic disk storage module.
In the CNC device is used to store the following data and parameters:
inherent in the data system software and systems;
system configuration parameters
(the system can control the feed axes, axis definition, system gain, etc.);
the user's part processing.
In the CNC device, often electronic memory device as an external memory instead of
magnetic storage device, mainly on account of CNC devices work environment may be
electromagnetic interference, magnetic devices, low reliability, the electronic memory
device anti-electromagnetic interference is stronger in relative terms. Also because
of the electronic device storage unit is disk management by way of, so called electronic disk.
5. CNC system, PLC control module controls the equipment is divided into two categories:
One is the speed of each axis and the position of "trajectory control";
the other is movement of equipment, "the order of control." To CNC machine tools
The term "Sequence Control" means during the operation of CNC machine tools to
CNC machine tools of various internal and trip switches, sensors, buttons, and the
relay traffic signal state for the condition, according to a predetermined logical order
such as spindle starting, stopping and reversing, the replacement tool, workpiece
clamping, release, hydraulic, cooling, lubrication system operation control, etc..
CNC device in order to achieve the control module is the PLC control module.
The module mainly receives from the operator panel, machine tools on the trip
switches, sensors, buttons, strong chest, electric relays, and spindle control,
tool control the signal, the corresponding treated control device operation.
6. Position control position control module is the module to the servo system
into the important part is when the locus of control, CNC device and the servo drive system
embedded PC, its purpose is not only inherited the accumulation of numerical
software for many years, but also use PC-rich software resources. More complex
structure of such systems. PC-based architecture: The structure is based on
standard PC = machine's hardware is based on a general-purpose operating
system (such as Windows, LINIX, etc.) developed by the support of
real-time multi-task system, the realization of a variety of numerical functions.
It is widely used in modern numerical control device architecture,
based on the structure of NC devices with high performance and low cost and
long vitality.
A typical PC-based CNC visual architecture in Figure 1, the hardware block
diagram in Figure 2.
Figure 1 CNC visual map The following functions to discuss
the plan from 8-4 in the role of the various hardware modules.
1. Computer motherboards and system bus board (motherboard) computer
motherboard is the core of CNC devices, as is PC-based architecture, the
hardware modules are compatible with standard PC-bus. The aim is to use
PC-rich software and hardware resources, improve the system adaptability
and openness. Lower prices, reduce new product development cycle.
CNC equipment and computer systems of ordinary commercial PC,
in the realization of a slightly different structure. Starting from the system's
reliability, its board and motherboard are separated, that is,
the system bus is a single passive motherboard, motherboard is made of
card forms, and more integrated, so-called ALL-IN-ONE motherboard.
This board includes the following functional structure: CPU chips and peripheral chips.
memory unit, cache and peripheral chips.
communication interface (serial, parallel port, keyboard interface).
soft and hard drive interfaces. The composition of the functional principle and
the principle of common micro-computer exactly the same, not repeat them here.
The main role of the computer motherboard is.
Input to the CNC device in a variety of data, information (parts processing,
various I / O information, etc.) for the corresponding arithmetic and logic operations,
and in accordance with the results of their treatment,
to control commands issued by other functional modules, data transmission,
so that the user's instructions are carried out.
Figure 2 CNC device hardware structure
System bus (motherboard) is the digital information transmitted by a
group composedof the physical wire, it is the CNC device to exchange
data or informationwithin the channel, the composition of principle
and the principle of common micro-computer exactly the same.
Pc as a general industrial machine is
independent of the passive bus, four-layer motherboard printed circuit board,
that is,on both sides of the plate alignment surface for the signal line,
while in the middle for the power supply and ground, the reliability
of more than two board.
The specification of 6 slots, 8 slots, 12 slots and 14 slots, etc.,
the user can function under the CNC device to select the number plate.
2. Display module display module that graphics card is a highly versatile module.
In the CNC device, CRT display is a very important function,
it is an important human-machine communication medium,
to provide users with an intuitive operating environment,
allowing users to quickly familiar with its operation.
The main role of graphics card are: to receive control commands from the CPU,
and display the data used,
the scan with the CRT signal modulated to produce the required CRT
Display video signals from the CRT's electron gun to scan the screen,
resulting in screen required.Graphics card not ready for this hardware
on the market to buy,and it also has very rich support for software,
so no user development.
3. Import / export module input A / out module is a standard PC machine
modules? Multifunction card, generally does not require users to their
own development. Input A / out module is CNC device and the outside
world data and information exchange in the interface board, the CNC
device in the CPU via the interface can access data from external input
devices, CNC devices can also be sent to an external output device data.
If the computer motherboard is ALL? IN? ONE motherboard,
motherboard has integrated this feature because, this board can be omitted.
Above three parts, matched with the keyboard, power supply and chassis
, in fact, is a general-purpose micro-computer system,
this system is the core of CNC equipment. In a sense,
their grades and performance determine the grade and performance of
CNC equipment, thus, CNC Control Computer Subsystem rational use is essential.
4. E-Disk (memory module) is a CNC device-specific electronic disk storage module.
In the CNC device is used to store the following data and parameters:
inherent in the data system software and systems;
system configuration parameters
(the system can control the feed axes, axis definition, system gain, etc.);
the user's part processing.
In the CNC device, often electronic memory device as an external memory instead of
magnetic storage device, mainly on account of CNC devices work environment may be
electromagnetic interference, magnetic devices, low reliability, the electronic memory
device anti-electromagnetic interference is stronger in relative terms. Also because
of the electronic device storage unit is disk management by way of, so called electronic disk.
5. CNC system, PLC control module controls the equipment is divided into two categories:
One is the speed of each axis and the position of "trajectory control";
the other is movement of equipment, "the order of control." To CNC machine tools
The term "Sequence Control" means during the operation of CNC machine tools to
CNC machine tools of various internal and trip switches, sensors, buttons, and the
relay traffic signal state for the condition, according to a predetermined logical order
such as spindle starting, stopping and reversing, the replacement tool, workpiece
clamping, release, hydraulic, cooling, lubrication system operation control, etc..
CNC device in order to achieve the control module is the PLC control module.
The module mainly receives from the operator panel, machine tools on the trip
switches, sensors, buttons, strong chest, electric relays, and spindle control,
tool control the signal, the corresponding treated control device operation.
6. Position control position control module is the module to the servo system
into the important part is when the locus of control, CNC device and the servo drive system
(ArticlesBase SC #2871740)
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