Abstract

PLC in the application of distributed control system, main control room and on-site through MODBUS communications, remote on-site air monitoring.

I. System Overview:

System architecture diagram

2, system architecture Description:

a, through siemens s7-300 plc-site analog, switch the state of the volume of the collection, and relay control;

b, we can through the touch screen, run the configuration software engineering, display and switch the status of analog data at the same time, through the touch-click to switch control;

c, the system consists of two communication module plc, two reserve port 485 for the slave client modbus protocol to provide control system stops the bus modbus query.

3, I / O analysis:

AI: 9, and are 4 ~ 20mA standard signal;

DI: 40, and the importation of stem nodes (that is, on-off signal input)

DO: 2, and relay output switching valve 36mA 0.864w

2 pulse input flow 4000hz

Second, the hardware structure:

1, Controller Selection:

1), the integration of TPC-TC33 IPC is a low-power embedded CPU as the core (frequency 200 MHz), high-performance embedded industrial computer integration. Characteristics:

a) 10.4-inch high-brightness TFT LCD screen (resolution 640 × 480)

b) four-wire resistive touch screen (resolution 1024 × 1024)

c) support for Microsoft operating systems for embedded real-time multi-tasking WinCE.net (Chinese version) and MCGS embedded version of the configuration software (running version)

d) support for printing and serial usb mini-window line printer Print

e) communications port rich: a serial port 232, a 232/485 serial port and a Ethernet port

f) 24-volt DC power supply, stainless steel shell, anti-interference ability;

2), IPC integration IPPC-9150G-R is a 15 "Pentium3 full-featured industrial grade Panel PC that can work in a variety of harsh environments. Features:

a) stainless steel chassis, aluminum front panel

b) support for PCMCIA wireless network adapter

c) 2 months PCI / ISA expansion slot

d) Socket 370 CPU support PentiumR III, rate of 850 MHz

e) 15 "VGA XGA TFT LCD provides vivid images of stark

f) four-wire resistive touch screen, with an aluminum alloy front panel, tempered glass to protect LCD.

g) from悬壁installation, rack-mounted panels installed on the installation of optional accessories, the user can according to their own needs to be installed in any place.

Third, software Description:

1, MCGS embedded version of configuration software
• Capacity of the small: the entire system configuration 16M minimum storage space
• Fast: the time control system, high precision, real-time control system to meet the requirements of
• Low cost: the use of embedded computers, greatly reducing the cost of hardware equipment
• Embedded real: running on embedded real-time multi-tasking operating system, running WinCE and embedded Linux operating system
• High stability: no hard drive, built-in watchdog, power restart time can be harsh environments in a variety of long-running stability
• Powerful: the provision of interrupt handling, regular scanning can achieve millisecond precision to provide the computer serial port, memory, port visit
• Facilitate communication: Internal serial communication function, Ethernet communications, Web browsing and remote diagnostic capabilities Modem
• Easy to operate: simple configuration intuitive, flexible
• Equipment of many: all the more than 700 kinds of commonly used device drivers
• Open interface: the user environment configuration can be directly prepared on the driver
• Data Storage: High compression ratio data compression to ensure that the data intact

2, MCGS5.5 generic version of
• Visualization of the entire Chinese configuration software, simple, generous and easy to use flexible
• Chinese complete online help system and multi-media tutorial
• True 32-bit program to support multi-tasking, multi-threaded, running on a platform Win95/98/NT/2000
• Nearly a hundred species to provide the basic drawing tools and icons, fast graphical interface structure
• Support the data acquisition board, intelligent modules, smart instrumentation, PLC, frequency converter, network equipment, such as many more than 700 kinds of commonly used equipment at home and abroad
• Temperature curve to support the planned curve, real-time curve, historical curve, XY curve curves and so on Industrial
• Support ODBC interface, with SQL Server, Oracle, Access and other relational database connectivity
• Support the OPC interface, DDE and OLE interface technology, convenience and other types of procedures and equipment for the Internet
• To provide a gradual color, rotation animation, transparent bitmap, animation and other flow block, it can be a good animation
• Gallery of thousands of fine components, to ensure rapid build beautiful animation effects
• Powerful network of data synchronization, network synchronization to build the database to ensure the perfect combination of multiple systems
• Improved network architecture, can support a variety of the latest popular means of communication, including telephone communications, broadband communications network, ISDN network, GPRS network and wireless communications network

Fourth, product details:

1, Option 1 (recommended):

Lower hardware and other products:

2, Option 2:

Lower hardware and other products: