LOG NET WEBSERVER DATA AQUISITION SYSTEM ‐
FEATURES • Data Logger from 16 Modbus RTU Devices • Memory internal 1 GB • Ethernet Port RJ45 Support TCP/IP Modbus Protocol • RS485 or RS232 for devices communication • Industrial design and Tropicalised of power, Transmission Data and Receive data • LED Display of power, • Config and Reading parameter via internet web browser • Built in supply, NO external adaptor. • Auto speed and auto data direction. • Automatic Data logger file report daily with 5 email list. • Separately with one email for status monitoring. • Ethernet 10/100M baseT. RJ45 connection. Protocols: TCP/IP, PPP (client and server), HTTP, FTP, SMTP, DHCP, DNS, ModbusRTU (master and slave), ModbusTCP (server and gateway).
Characteristic Display Type
: 1 x LED Power on : 2 x LED Ethernet : 2 x LED Serial Communication
CPU Microprocessor
: 12 Bits speed 11 Mhz. Opto Isolated circuitry : Hardware
Watchdog Memory Event time stamp Configuration Data Reading Communication Interface Port1 Protocols Bauds Rate Address Data bits Parity Stop bits
: 131 K : 1 K EEPROM data : Data retained even power Failure : 1GB : stamp date time with data ‐
: RS 485 : Modbus RTU : 9600, 19200 : 0 254 : 8 bits : None : Even & odd ‐
INTRODUCTION The LOG NET Web Server is targeted at the acquisition and transmission of data. It is capable of integrating instruments and sensors to the Internet and ethernet. The LOG NET comprises an ethernet interface, the TCP/IP protocol, ONE serial communication ports. The inputs for data acquisition can be analog and digital inputs or any inputs from the external device connected to the LOG NET through the RS485 interface (Modbus protocol). Data transfer can be accomplished through the Ethernet interface using ordinary Internet resources, such as the internet browser, e mail and TCP connection. ‐
STANDARD APPLICATIONS Monitoring processes using Internet browser The data from the Webserver analog and digital inputs from the instruments in the the MODBUS network is presented as a dynamic HTML page, available to any computer on the network using a standard Internet browser (Netscape, Internet Explorer, etc). When the Webserver ethernet port is connected to the company’s intranet, then any computer in the intranet gains access to the Webserver (password protected) to read and write data do it. For remote applications, the LOG NET connected to a conventional or mobile modem answers a phone call from a dial up connection and presents the HTML page to the Internet browser of the of the computer that originated the call, making possible and easy the monitoring of remote processes. Example of application: The LOG NET connected to the transmitter measures temperature and humidity. Connected to the ethernet, temperature and humidity values can be seen by any computer within the company. ‐
Port 2 Protocols
: Ethernet 10/100M baseT : ModbusTCP(server)
Power supply
: 230V±10%, 50/60Hz : 110V±10%, 50/60Hz option : 85 265Vac/dc option : 18 60Vac/dc option ‐
‐
Consumption Mechanical characteristics Protection degree Terminals Size Weight
: 10VA : IP54 ( front panel ) : IP20 ( terminals ) EN60529 : Screw type 2.5 mm. : 51 x 110 x 110 mm. : 500g.
Environmental conditions Operating temp Storage temp Relative humidity
: 10°C to + 55°C : 25°C to + 75°C : 95% max. non condensation
Insulation Test Voltage Input_Output/Housing Output_ Housing
: AC 4 kV : 500 V
‐
‐
‐
Electromagnetic Compatibility
Surge Voltage Burst Electromagnetic Electrostatic discharge
: 4 kV1.2/50 us ( IEC 255 4 ) : 2 kV ( DIN EN 61000 4 4 ) : 10 V/m ( DIN EMV 50141 ) : 15 kV ( DIN EN61000 4 2 ) ‐
‐
‐
‐
‐
INTERNET & ETHERNET
LOG NET WEBSERVER DATA AQUISITION SYSTEM ‐
INTERNET & ETHERNET WIRELESS
Report by email In this application, the LOG NET monitors the signals on its inputs of the instruments in the Modbus network and confronts them daily. The Webserver automatically sends all data logged e mails to a mailing list. E mails are sent through Ethernet with 5 listed mail. Example of application: The LOG NET monitors the level of storage tanks and sent data of the responsible for stock monitoring to replacement when the minimum level is reached ‐
‐
SCADA + Ethernet process supervision A network of instruments communicating in the Modbus protocol can be easily and efficiently controlled by a SCADA software making use of the protocol Modbus TCP over the Ethernet bus. The LOG NET works as a converter and as a temporary data storage (concentrator). Through the RS485 interface, the LOG NET monitors continuously the instruments in the Modbus RTU bus, keeping the data in local memory available to immediate access from the Ethernet side. All variables may be read of written in blocks through a single ModbusTCP block command, increasing the efficiency of the communication with the SCADA software, as opposed to ordinary Modbus RTU/TCP converters which don’t embed the concentrator capability. Application example: A group of instruments with Modbus RTU protocol are connected to a RS485 bus. The LOG NET acting as a master to the Modbus RTU network, monitors continuously the variables configured in the application. Connected to the corporate Ethernet, the LOG NET will serve ModbusTCP requests (reads and writes) to any SCADA workstation that have access to the LAN
ETHERNET
Periodic data send to a remote computer Recording periodically historical data in a computer is another LOG NET function. The value of the monitored variables are stored in the LOG NET and periodically sent to any computer accessible to the Webserver, by ethernet or Internet, where they are received in a TCP connection and stored in a place and format defined by the user Example of application: The LOG NET read data from the water, gas or energy totalizer devices and sends the data periodically through the Internet by means of a GPRS mobile modem to the computer responsible for generating the bill.
SYSTEM DIAGRAM ORDERING Ordering info Log Net + power supply A : 230V±10%, 50/60Hz B : 110V±10%, 50/60Hz C : 85 265Vac/dc D : 18 60Vac/dc ‐
‐
‐
