Description
The WebServer WS10 is a device for analogue and digital data acquisition, logging and transmission. It is capable of integrating instruments and sensors to the Internet, Ethernet and Wireless networks. The WS10 has built-in analogue and digital inputs or the I/O count can be increased using external Modbus based acquisition units. Data is logged to internal memory and can then be uploaded later through the Web, Ethernet or GSM or dial-up Modem. The WS10 also has built-in alarming.
Product
Internal memory for off-line data logging (16 bit CPU, with 512KB RAM)
2 Serial Interfaces (RS232, RS485 or Modem)
Ethernet 10BaseT Interface
It suports TCP/IP, PPP (client and server), HTTP, FTP, SMTP, DHCP, Modbus TCP, Modbus RTU protocols
Mobile wireless networks (GSM GPRS or CDMA 1XRTT)
email in case of alarm
Four inputs, configurable as: Digital inputs for counting voltage pulses or dry contacts, with totalizer for flow measurements.
0- 5V , 0-20mA or 4-20mA analogue inputsResolution: 1024 levels(10 bits) for 0-5V and 0-20mA
Analogue/Digital Expansion via External Units >>
800 levels for 4-20mA.
Accuracy: better than 0,3% of input full scale range.
Input impedance: >1M Ohms for 0-5V, 230 Ohms for current.
Pull-up resistor for digital inputs: 10KOhms / +5V.
Possible input types combination: 4 digital inputs
1 analogue and 3 digital inputs
2 analogue and 2 digital inputs
4 analogue inputs2 Relays Output
Ambient conditions: 0 a 55°C, 35% to 85% Relative Humidity, non condensing
ABS Housing for DIN Rail 35mm.
Dimension: 105x90x60mm
SMPS 85 to 264Vca / 50-60Hz / 4VA max.
Data Acquisition
The WS10 gets data from the system or process through:
4 built-in signal inputs
RS232 or RS485 serial communication interface
Data acquisition over the RS485 communication interface uses the Modbus RTU protocol. The WS10 acts as a master, polling the Modbus network nodes to get the specified data to its memory. All the data acquired from its local inputs and from external Modbus devices are stored on the WS10 memory. The user can assign identifiers for each memory position. On the configurations of the data access functions, all registers are referenced by their names.
The WS10 can be configured to periodically log data to its Flash memory. This historical logging can then be sent out by e-mail or directly to a computer. With a remote supervision system, this function enables the WS10 to monitor the process and send the acquired data periodically or when the communication link is established.
The instantaneous and historical values acquired from the system or process can be accessed via:
Ethernet interface
RS232, RS485 serial interface or Modem (conventional or mobile).
The WS10 offers five basic applications for remote data access of its data.
Web Browser Access
Modbus TCP or Modbus RTU
Alarm conditions supervision
E-mail transmission
Periodical data transmission
The WS10´s multi-task operating system allows for the simultaneous utilization of all these applications
Web Browser Access
The WS10 can present the acquired data of the process in dynamic user-created HTML pages, that can be visualized by any computer using a Internet browser (Netscape, Internet Explorer, etc). The WS10, connected to the company’s intranet by its Ethernet interface, shares the information (application data) to any computer connected to the intranet, allowing both reading and writing of data, with or without password authorization.
In a remote application, a WS10 connected to a conventional or mobile modem can answer a "dial-up" call connection and present a supervision page to the internet browser of the computer that originated the call, allowing the supervision of remote units.
MODBUS TCP
The WS10 can be configured as a ModbusTCP server and gateway, enabling integration to SCADA supervisory systems. As a server, WS10 accepts connections from multiple SCADA clients, allowing read and write access to its internal registers. This registers are associated to WS10’s local I/O, memory positions or external ModbusRTU devices. As a gateway, WS10 forwards messages between ModbusTCP and ModbusRTU networks, acting as a protocol converter. Both modes may be used simultaneously, while all other WS10 functions remain fully functional. ModbusTCP communication can be used over Ethernet or phone line (fixed or mobile).
Alarm Notification
Tthe WS10 can continuously compare the content of its registers against user programmed limits. The result of this comparison is assigned to a new register that can be used to trigger a local output, write in a remote equipment through the Modbus RTU, send an e-mail or send information to a remote server. The WS10 2 Relays can be activated in response to various alarms
email or Mobile Phone Messages
The WS10 can be configured to send e-mails automatically to an address list. The transmission can be periodical or by exception, based on register values. The e-mails are sent through the Ethernet or Modem and have a dynamic content, sending process data to the recipient. The message sending to cell phones can be done by email (depending on the routing service offered by the mobile phone operator) or directly to a GSM modem connected to the WS10. The e-mail may include, as an attached file, the historical data stored in its memory.
Periodic Data Transmission
The data acquired by the WS10 can be sent periodically to any accessible computer in the Ethernet or Internet (using a conventional or mobile Modem), being received by a TCP server application and stored in a place and format defined by the user. Both instantaneous and historical register values can be sent to the remote server.
Application Topology
Local Operation
Connected to a local network, WS10 can bridge a ModbusRTU network to existing SCADA using Ethernet, expanding data accessibility to virtually all networked computers using internet browser. WS10 can also log historical data, monitor alarm conditions and send e-mail messages in periodical or exception basis. WS10 is an alternative to SCADA in small applications. When the network connection to the internet is properly configured, WS10 data can be accessed from external locations, both by SCADA systems and browsers. The following figure shows WS10 in local application.
Remote Operation
Installed on a remote site, WS10 can connect through a modem to a fixed (optional internal modem) or cellular phone line. Using this connection, WS10 can access internet and send e-mail messages on abnormal conditions or periodically. WS10 can also transfer historical data to a networked computer. Its ability to answer data calls allows dial-up access using SCADA or browser. Remotely installed, WS10 allows additions functionalities when compared to conventional remote units that can only transfer data periodically. The following figure shows WS10 in a remote application.
Specifications
General
Switching power supply, 85 to 250Vac / 4VA.
Operating environment: 0 to 55°C, 35% to 85%RH, no condensation.
ABS housing for DIN rail mount. Dimensions: 105x90x60mm
Communication interfaces
Two serial interfaces with 6 pin RJ12 connection. Options:
RS232 (Com 1 Standard).
RS485 with optical isolation. Modbus RTU master or slave protocol (Com 2 stanard).
Internal V34+ Modem (Optional)Ethernet 10baseT. RJ45 connection.
Protocols: TCP/IP, PPP (client and server), HTTP, FTP, SMTP, DHCP, DNS, ModbusRTU (master and slave), ModbusTCP (server and gateway).
Inputs
Four configurable inputs:
Digital inputs for voltage pulse or dry contact. Flow measurement and totalizer function.
Analogue inputs for 0 to 5V, 0 to 20mA or 4 to 20mA.Resolution: 10 bits (1024 levels) for 0 to 5V and 0 to 20mA. 800 levels for 4 to 20mA
Analogue input accuracy: Better than 15mV or 0.06mA.
Pulse flow measurement time base accuracy: Better than 1s.
Pulse input maximum frequency: 200Hz with debounce disabled.
Input impedance: >1M 230ohm for current
Configurable input bias resistor: 10K
Allowable input configurations: 4 digital inputs
1 analogue and 3 digital inputs
2 analogue and 2 digital inputs
4 analogue inputs
Outputs
Two 250V/3A SPST relays.
Real Time Clock
Accuracy: ±3 minutes / month @ 25°C
Battery: CR2032 lithium cell.
Battery life: 10 years
The WS10 gets data from the system or process through:
4 built-in signal inputs
RS232 or RS485 serial communication interface
Data acquisition over the RS485 communication interface uses the Modbus RTU protocol. The WS10 acts as a master, polling the Modbus network nodes to get the specified data to its memory. All the data acquired from its local inputs and from external Modbus devices are stored on the WS10 memory. The user can assign identifiers for each memory position. On the configurations of the data access functions, all registers are referenced by their names.
The WS10 can be configured to periodically log data to its Flash memory. This historical logging can then be sent out by e-mail or directly to a computer. With a remote supervision system, this function enables the WS10 to monitor the process and send the acquired data periodically or when the communication link is established.
The instantaneous and historical values acquired from the system or process can be accessed via:
Ethernet interface
RS232, RS485 serial interface or Modem (conventional or mobile).
The WS10 offers five basic applications for remote data access of its data.
Web Browser Access
Modbus TCP or Modbus RTU
Alarm conditions supervision
E-mail transmission
Periodical data transmission
The WS10´s multi-task operating system allows for the simultaneous utilization of all these applications
Web Browser Access
The WS10 can present the acquired data of the process in dynamic user-created HTML pages, that can be visualized by any computer using a Internet browser (Netscape, Internet Explorer, etc). The WS10, connected to the company’s intranet by its Ethernet interface, shares the information (application data) to any computer connected to the intranet, allowing both reading and writing of data, with or without password authorization.
In a remote application, a WS10 connected to a conventional or mobile modem can answer a "dial-up" call connection and present a supervision page to the internet browser of the computer that originated the call, allowing the supervision of remote units.
MODBUS TCP
The WS10 can be configured as a ModbusTCP server and gateway, enabling integration to SCADA supervisory systems. As a server, WS10 accepts connections from multiple SCADA clients, allowing read and write access to its internal registers. This registers are associated to WS10’s local I/O, memory positions or external ModbusRTU devices. As a gateway, WS10 forwards messages between ModbusTCP and ModbusRTU networks, acting as a protocol converter. Both modes may be used simultaneously, while all other WS10 functions remain fully functional. ModbusTCP communication can be used over Ethernet or phone line (fixed or mobile).
Alarm Notification
Tthe WS10 can continuously compare the content of its registers against user programmed limits. The result of this comparison is assigned to a new register that can be used to trigger a local output, write in a remote equipment through the Modbus RTU, send an e-mail or send information to a remote server. The WS10 2 Relays can be activated in response to various alarms
email or Mobile Phone Messages
The WS10 can be configured to send e-mails automatically to an address list. The transmission can be periodical or by exception, based on register values. The e-mails are sent through the Ethernet or Modem and have a dynamic content, sending process data to the recipient. The message sending to cell phones can be done by email (depending on the routing service offered by the mobile phone operator) or directly to a GSM modem connected to the WS10. The e-mail may include, as an attached file, the historical data stored in its memory.
Periodic Data Transmission
The data acquired by the WS10 can be sent periodically to any accessible computer in the Ethernet or Internet (using a conventional or mobile Modem), being received by a TCP server application and stored in a place and format defined by the user. Both instantaneous and historical register values can be sent to the remote server.
Application Topology
Local Operation
Connected to a local network, WS10 can bridge a ModbusRTU network to existing SCADA using Ethernet, expanding data accessibility to virtually all networked computers using internet browser. WS10 can also log historical data, monitor alarm conditions and send e-mail messages in periodical or exception basis. WS10 is an alternative to SCADA in small applications. When the network connection to the internet is properly configured, WS10 data can be accessed from external locations, both by SCADA systems and browsers. The following figure shows WS10 in local application.
Remote Operation
Installed on a remote site, WS10 can connect through a modem to a fixed (optional internal modem) or cellular phone line. Using this connection, WS10 can access internet and send e-mail messages on abnormal conditions or periodically. WS10 can also transfer historical data to a networked computer. Its ability to answer data calls allows dial-up access using SCADA or browser. Remotely installed, WS10 allows additions functionalities when compared to conventional remote units that can only transfer data periodically. The following figure shows WS10 in a remote application.
Specifications
General
Switching power supply, 85 to 250Vac / 4VA.
Operating environment: 0 to 55°C, 35% to 85%RH, no condensation.
ABS housing for DIN rail mount. Dimensions: 105x90x60mm
Communication interfaces
Two serial interfaces with 6 pin RJ12 connection. Options:
RS232 (Com 1 Standard).
RS485 with optical isolation. Modbus RTU master or slave protocol (Com 2 stanard).
Internal V34+ Modem (Optional)Ethernet 10baseT. RJ45 connection.
Protocols: TCP/IP, PPP (client and server), HTTP, FTP, SMTP, DHCP, DNS, ModbusRTU (master and slave), ModbusTCP (server and gateway).
Inputs
Four configurable inputs:
Digital inputs for voltage pulse or dry contact. Flow measurement and totalizer function.
Analogue inputs for 0 to 5V, 0 to 20mA or 4 to 20mA.Resolution: 10 bits (1024 levels) for 0 to 5V and 0 to 20mA. 800 levels for 4 to 20mA
Analogue input accuracy: Better than 15mV or 0.06mA.
Pulse flow measurement time base accuracy: Better than 1s.
Pulse input maximum frequency: 200Hz with debounce disabled.
Input impedance: >1M 230ohm for current
Configurable input bias resistor: 10K
Allowable input configurations: 4 digital inputs
1 analogue and 3 digital inputs
2 analogue and 2 digital inputs
4 analogue inputs
Outputs
Two 250V/3A SPST relays.
Real Time Clock
Accuracy: ±3 minutes / month @ 25°C
Battery: CR2032 lithium cell.
Battery life: 10 years
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