SPX5 INDUSTRIAL GATEWAY. User Manual

Transcription

1 SPX5 INDUSTRIAL GATEWAY User Manual

2 Contents Table Product Capabilities Hardware Installation... 3 Power Supply Connector... 3 Serial Ports Connectors... 4 Serial Ports Configuration Switches... 4 Ethernet... 5 Indicator Lights Reset Push Button... 6 Setting up the SPX5 for the first time... 8 Operation and Configuration of the SPX Data Base Module Configuration Gateway Name and Description Gateway Security Configuration Ethernet (LAN) and WiFi (WLAN) Configuration Network Protocols Configuration Modbus TCP/IP Client Protocol Modbus TCP/IP Server Protocol EtherNet/IP Tag Client NTP Protocol Serial Protocol Configuration Modbus RTU Master Configuration User Programmable Scripts Examples of Useful Lua Scripts Actions at Constant Intervals Read and Write of the SPX5 Database values Math Functions over Database Values Availabel Objects in the SPX5 Scripting Language WEB HMI Appendix

3 Product Capabilities. The SPX5 is and Industrial Wireless Communications Gateway that allows transferring data to and from the internal memory to other devices via all the supported industrial protocols. It also allows wireless communications using the Wi-Fi standard. By using the friendly WEB based configuration tool, the user can configure reads and writes using all the available industrial communication protocols. The SPX5 can also be programmed using a simple scripting language called LUA, allowing data conversions as well as execute event based actions upon communication exceptions or data value based. Values retrieved trough the communication protocols can be displayed in a WEB based HMI (Human Machine Interface) that allows monitoring the industrial process using Personal Computers and Mobile Devices like tablets or smart phones. Figure 1

4 Hardware Installation Top and Bottom View Right Side View View from Behind Figure 2. SPX5 Dimensions. Power Supply Connector The SPX5 can be powered with a 9 to 48 Volts DC power supply and the maximum power consumption is of 5Watts. The power supply connector is located on the top side of the gateway and the terminals are shown of Figure 3. The FG terminal must be connected to the field ground to avoid electromagnetic interference and allow all the over voltage protections to operate properly. Figure 3. Power Supply Connector Terminals Distribution.

5 Serial Ports Connectors To connect the SPX5 to serial networks, the COM1 and COM2 connectors, shown on figure 4, are used. Terminals R- and R+ are used for transmit and receive in RS485 networks. In the case of RS422 networks R+ and R- are used for reception whereas T+ and T- are used for the transmission pair. Figure 4. Serial Network Connector showing RS232/RS485 connections Serial Ports Configuration Switches The SPX allows configuring Pull Up, Pull Down and termination resistors in the RS485/RS422 network. This configuration is done through the dip switches in the front of the equipment. In Figure 5, the operation of the switches is shown. The recommended normal operation of the SPX5 is having all switches OFF, however when the SPX5 is the first or last device on the network, the termination must be switched to ON.

6 COM DIP Function SW Ω COM1 6 Pull High On 1K Off 100K 5 Pull Low On 1K Off 100K 4 Termination On 120 Off COM2 3 Pull High On 1K Off 100K 2 Pull Low On 1K Off 100K 1 Termination On 120 Off Figure 5. Serial Port Configuration Switches. Ethernet The SPX5 has a 10/100/1000 Mb/s capable Ethernet Port. This port supports all type of network communications like Ethernet/IP and Modbus TCP/IP. This port is also used for configuring the SPX5 using our WEB based configuration tool. Indication LEDs for the Ethernet Port LED Status Description Data (Verde) Off Blinking No Ethernet connection detected. SPX5 is not communicating trough the Ethernet Port. Active data Communication trough the Ethernet Port.. Speed(Amber) Off No activity On Connected at 10 Mbps. Blinking Connected at 100/1000 Mbps Figure 6. Ethernet Port indication Lights

7 Indicator Lights. The SPX5 has two blocks of indicator lights shown on figure 7. The first block indicates Wireless LAN communication status whereas the second indicates general status as well as serial ports communication status. The Wireless LAN communication status block indicates, using six LED lights, the signal strength of the node with the lowest wireless signal quality. If all the signal quality LEDs are OFF, no nodes are currently connected to the SPX5. The number of lighted LEDs indicates the quality of the signal of the node with the worst signal quality, and the meaning of the number of lights can be seen in Figure 7. Figura 7. Indicadores Luminosos del SPX5 The second block of indicator lights show the transmission and reception of the serial ports as well as general and Wireless status. A blinking TX or Rx light for COM1 or COM2 indicates that data transfer is happening on the respective port. A solid Rx or TX line indicates a faulty connection on the respective port. Typically a solid light is associated with a mismatched polarity of the connection or a misbehaving node on the network. The WLAN indicator light shows if the Wireless LAN is activated and it is transferring data. A solid WLAN indicator means that the interface is configured but no data is being transmitted. A blinking light means that data transfer is happening. If the WLAN indicator is off, it means that the interface is disabled. A slow (once a second) blinking RUN light means that the module is operating properly, while a fast blinking (200 msec) indicates firmware corruption and technical support must be contacted. Reset Push Button In figure 8, the reset push button is shown. This button is to reset the SPX5 security and to restore factory default settings. If the button is pressed and hold for 5 seconds, all security settings (passwords), will be reset to a disabled security. This may be necessary if the user forgets the administration password that is required to make configuration changes. After the security is disabled the unit will play two tones using the internal speaker.

8 To restart the unit to factory defaults, the reset button must be pressed for 10 seconds. At this point the internal configuration will be replaced with the factory default settings. The user may need to do this if an invalid configuration is loaded into the module. Figure 8. Reset Push Button Location.

9 Setting up the SPX5 for the first time To start working with the SPX5, it must be powered by a 9V to 48V power supply and the Ethernet port must be connected to the configuration personal computer. From the IZI Technology web site download and install the SPX5 Browser. This application is only supported in Microsoft Windows Operating System. Figure 9. Connecting the SPX5 When the application is installed and run for the first time, it will show all connected SPX5 on the network. Figure 10. SPX5 Browser windows.

10 The SPX5 Browser (Shown in figure 10) is a simple to use software that allows you to detect SPX5 devices present on the network, change or assign a temporary IP to them, and allow upgrading the firmware version of the devices. In order to detect an SPX5 on the network go to the menu Tools (1) and choose Firmware Download to upgrade a gateway firmware or View Device Web Page to configure a gateway on the network. After choosing any of these options a dialog will present that will show all the detected SPX5 devices on the network. When presented, the IP Address of the PC interface at which the SPX5 is connected to will be shown (2). This allows the user to determine what is the optimal IP that can be assigned to the SPX5 in order to access it through the network. For each detected SPX5 on the network, the SPX5 Browser, will show: Gateway Name, Serial Number or MAC Address (3) SPX5 Configured IP Address (4), Temporary IP Address (7) and Firmware Version (5). If the IP Address is shown in red, it means the IP Address of the gateway is not reachable from the computer you are connected from. In that case you need either to change your computer IP Address or assign a temporary IP address to the SPX5 gateway. To assign a temporary IP address to the SPX5, right click over the gateway and select Change Temporary IP Address. After that, the temporary IP change window (6) will be displayed. A new IP Address and network mask must be entered in this window. If the new IP Address is on the same subnet as the PC, it will be possible to access the SPX5 Gateway for configuration or for firmware upgrade. Once the SPX5 has an IP Address that is reachable from the PC, double clicking the shown gateway will start the configuration or firmware upgrade process. In Figure 11 the main configuration web page of the SPX5 is shown.

11 Figure 11. Main configuration page of the SPX5. Operation and Configuration of the SPX5 The SPX5 is an industrial communication gateway that allows transferring value to and from its internal database. Using any of the supported protocols, the information is read from a device and copied in the internal memory of the SPX5. Then using another protocol that same information is transferred to a different device. The SPX5 also supports writing simple user scripts that allow conversion of data values or executing logic upon communication events. There are three types of scripts available on the SPX5: Startup, Continuous, and Fault. The Startup script is executed on startup (every time the gateway cycles power or after configuration changes). The Continuous script executes constantly during operation, for this reason is important to make this script in an efficient way, to avoid interrupting communications. The Fault Script is executed if an error is found on the Continuous Script.

12 Data Base The SPX5 contains an internal Real Time Database. This database is used to hold values retrieved using the different available protocols. This data can also be accessed by the protocols to be transferred to a different device. The Status web page of the SPX5 allows viewing the Database for troubleshooting or just to view the values retrieved by the different protocols. The Status web page (shown in Figure 12) shows the database as an array of values with a user selectable Data Format and Byte Swapping. Table 1 shows all the possible data types Figure 12. SPX5 Database Visualization of the Status Web Page. NAME Range Description INT16(DEC) (-32,768 hasta +32,767) 16-bit signed integer in decimal format UINT16(DEC) 0 hasta 65,535 Unsigned 16-bit integer in decimal format UINT16(HEX) 0 hasta 65,535 Unsigned 16-bit integer in hexadecimal format INT32(DEC) -2,147,483,648 to 2,147,483, bit signed integer in decimal format UINT32(DEC) 0 to 4,294,967,295 Unsigned 32-bit integer in decimal format UINT32(HEX) 0 to 4,294,967,295 Unsigned 32-bit integer in hexadecimal format FLOAT hasta Representation in 32 bits where MSB is sign, 8 bits of exponent and 23 of mantissa. BIN Utiliza las 16 posiciones de memoria Binary representation of data Table 1. Different type of Database values representation.

13 The SPX5 database can be accessed from all the available protocols as well as from the scripts. When accessed from any protocol, the addressing used is in 16 bit Words, whereas when accessed from the scripts, it is addressed as 8 Bit Bytes. What this means is that typically, database addresses entered in the scripts correspond to double the number of the addresses entered in the protocol configuration screens. Module Configuration. All the SPX5 configuration is made through the Configuration web page of the SPX5. Of Figure 13 the main view of the configuration web page is shown. On the left all the possible configuration items are shown, whereas on the right the specific configuration for the chosen item is entered. The Items shown on Figure 13 Allow configuring: 1. General Gateway Configuration: Name and Description 2. Access Security 3. LAN (Ethernet Port) and WLAN (Wireless Interface) 4. Network Protocols 5. Scripts Edition 6. Web HMI Configuration Gateway Name and Description This option allows setting a name and a description of this specific SPX5 gateway. This information is available in the status tab and the SPX5 Browser and allows the user to identify individual SPX5 as well as quickly determining what its function is. Gateway Security Configuration The SPX5 allows configuring three levels of security, Admin (full access), Hmiview (Allows viewing WEB HMI Screens), and HMIControl (Allows viewing and controlling from HMI Screens). The Admin user can setup the passwords for all three users. Each password must be larger than 8 characters. Passwords are write-only, so once they are set there is no way to view what they were set to. Also they are not stored with the gateway configuration. After changing the passwords a reboot is required for the changes to make effect.

14 Figure 13. SPX5 Configuration Screen Figura 13. SPX5 Security Configuration Screen. Ethernet (LAN) and WiFi (WLAN) Configuration The LAN interface (Wired Ethernet) is always enabled. The user must configure the IP Address, network mask and default gateway. The user must carefully choose these values to allow the SPX5 gateway to communicate through the hardwired Ethernet interface.

15 The Gateway setting is required if the SPX5 will be accessing networks outside the wireless (WLAN) and wired (LAN) sub networks. In that case, the IP of a router connected to the LAN interface must be specified in the Gateway setting. Figure 15. LAN Interface Configuration The Wireless network can be enabled or disabled depending on the user requirements. The user must specify the IP settings: IP Address, Network Mask and Gateway. It s very important that the settings for LAN and WLAN are in different subnets. Although a Gateway setting is present for the WLAN, this is reserved for the future. At this point in time the network can be rerouted to other subnets only through the LAN interface. Figure 16. WLAN IP Settings configuration DHCP Server Settings: The WLAN interface supports a DHCP Server, useful to automatically set IP Addresses of mobile devices attached trough the WLAN Interface. It is important to set the range of IP Addresses on the same subnet as the WLAN Interface.

16 Wireless Settings: In the Wireless Settings section it is possible to configure all the WiFi settings. Based on the selected Topology (AdHoc, Infrastructure, or Access Point) the possible options change. When Infrastructure is selected, it is possible to use the Scan Network button to browse existing WiFi Networks in the vicinity of the gateway. Based on that is possible to choose an existing network and connect to it. Figure 17. DHCP Server Configuration

17 Figure 18. Wireless LAN Configuration Sections Depending on the type of encryption in the network the user will have to enter a Passphrase. The Passphrase is the network encryption key and it must be 9 characters or longer. MAC Address Whitelist: When enabled, this option only allows devices with the entered MAC address to connect to the SPX5. The friendly name is a guide for the user to enter the device that contains that MAC Address. Network Protocols Configuration At this moment there are four types of network protocols that can be configured on the SPX5: Modbus TCP/IP Client, Modbus TCP/IP Server, Ethernet/IP Tag Based Client and NTP (Network Time Protocol). It is very important to indicate that all these protocols can be enabled at the same time or even multiple instances of some of these protocols can be enabled at the same time. For example it is possible to enable multiple Modbus TCP/IP Clients to more efficiently connect to several Modbus Devices. Server protocols only support one instance at a time. Every protocol added has a General Settings section where a name and a comments area is available for the user to comment about the use of that specific protocol.

18 Figure 19. Protocol Configuration Screen. Modbus TCP/IP Client Protocol To configure the Modbus TCP/IP Client, the user must specify data transfer blocks or commands. Each one of those data transfer blocks specifies a block of data that is transferred to/from a Modbus TCP/IP device and to the SPX5 Internal database. Each one of those transfers are executed automatically according to the specified poll time. Figure 20 shows the Protocol Settings section of the Modbus TCP/IP Client Configuration. Three values can be set in this section: 1. Time Out, 2. Retry Count, and 3. Back Off. The Modbus TCP IP Client waits a Time Out amount of milliseconds for a response. If a response is not obtained in this time, the command will be retried Retry Count times. After this number of retries the command is flagged in error. After an error, the Modbus TCP/IP Client will wait Back Off number of seconds before polling that device again. A correct setting of these parameters avoids wasted time in devices that are not present on the network.

19 Figure 20. Modbus TCP/IP Configuration. Protocol Settings Section. After configuring the Protocol Settings, the user has to add Data Mapping Blocks or Commands. This is done using the buttons on the Data Mapping Section. When a Command is added or edited, the window shown in Figure 21 is shown. The Enable parameter selects the enable type of the command being edited. The options are: Disabled: The Command is never executed. This is used to disable commands that might not be needed but the user doesn t want to remove for future use. Continuous: The command will be executed continuously according to the Poll Interval. On Data Change: The command will be sent when its associated data changes. This only works for write commands and allows improving the protocol throughput by only sending commands when the data changes. The Poll Interval parameter specifies how often, in milliseconds, this command will be polled. If for example the Poll Interval is set to 100, the command will be executed every 100 milliseconds. Figure 21. Modbus TCP Client Command Configuration Parameter (6) Device IP Address y Device Node Address, allows setting the address of the Modbus TCP IP Server that the user wants to access with this command. The SPX5 automatically

20 routes Modbus TCP/IP messages through the correct interface (LAN or WLAN) depending on the IP address configured here. If the IP address is not on any of the WLAN or LAN interfaces subnet, then it is routed through the LAN default gateway. The Device Node Address is the specific Modbus device inside the Server. Most Modbus TCP/IP Servers ignore this parameter and some other use it to route to a different interface. Consult your Modbus Server User Manual to determine the use of this parameter. Modbus Function allows you selecting the Modbus function that you want this command to execute. The available options are the 8 most commonly used Modbus functions. The parameter 8 Device Modbus Address the user has to enter the 0 based Modbus offset of the register that wants to be read or written. For example to enter Modbus address 40001, the user needs to select function 3 Read Holding Registers and enter Device Modbus Address 0. The parameter 9 SPX5 Database Address is the 16-bit word address of the SPX5 Database register associated with this command. For read commands, the information will be copied in the specified address. For write commands, this is the database location where the data will come from. Parameter 10 Register Count is the number of registers to read or write with this command. For bit commands is the number of bits. For word commands, this parameter represents the number of words. Parameter 11 Data Swap allows selecting a byte swapping strategy. Because some devices that implement the Modbus protocol use different byte alignments to represent its data, this parameter allows two devices that use different alignment to communicate to each other. Modbus TCP/IP Server Protocol

21 Figure 22. Modbus TCP/IP Configuration Window The TCP Port parameter allows selecting the Modbus TCP/IP Port. This parameter is configured by default for port 502 (standard Modbus TCP port). The Concurrent Connections allows configuring the maximum number of concurrent connections allowed by the protocol. The Connection Timeout is the time with no data in a TCP connection before closing the connection. The recommended value for this parameter is msec. By default all the SPX5 Database memory is mapped into Modbus Registers. Figure 23 shows the mapping between Modbus registers and addresses on the SPX5 internal database. As an example, word 0 of the database, will be Holding Register or it can be read as well as 16 Coils from to Word 1 of the database can be read as input register or input status to Figure 23. Mapping of Modbus registers to SPX5 database registers.

22 Ethernet/IP Tag Client Like in the other protocols configuration, the user has to define data transfer blocks in the Ethernet/IP Tag Client to transfer a PLC Tag Data to or from the SPX5 internal database. In figure 24 the Protocol Settings section is displayed. These settings identify the Allen Bradley PLC that the user wants to access and general communication settings. These are the configuration parameters available in this section: PLC IP Address: This is the IP Address of an Allen Bradley Ethernet interface card on the same chassis as the PLC that the user wants to access. Processor Slot: This is the slot where the PLC resides on the rack. For PLCs with no movable racks (like MicroLogix and CompactLogix) 0 must be used. Conn. Timeout: This is the connection timeout when trying to connect to the specified PLC. Msg. Timeout: This is the timeout from messages on an open PLC Connection. Like in the other protocols configuration, the user has to define data transfer blocks in the Ethernet/IP Tag Client to transfer a PLC Tag Data to or from the SPX5 internal database. To create transfer blocks the buttons in the Data Mapping section are used. When adding or editing a new data transfer the Tag Setting section will show. This is the detail of all possible configuration parameters in this section: Enable: The enable parameter has three options: Disabled: This is used to disable a data transfer when the user doesn t require the command to be executed but doesn t want to remove it. Enabled: The data transfer will be executed continuously. On Data Change: The data transfer will happen only when data changes. This option only works on Writes. Data Direction: Defines if the configured data transfer will be a Read of PLC data or a Write to the PLC. Tagname: This is the name of the tag that the user wants to read or write from the Allen Bradley PLC. The tag must be defined as a Controller Tag on the PLC. The format for the tag name follows the standard format defined for Allen Bradley Logix PLCs. Examples of tag names are: tag, tag.element, tag[index], tag[index].element[index].element. Data Type: This is the type of the element that is read from the PLC. If the specified data type of the tag doesn t match during the execution of the command, the data transfer will fail. Register Count: For accessing tag elements that are not arrays this parameter must be always 1. If the accessed element of a tag is an array, then this parameter is the number of elements to be read from that array. If for example the user has a Controller Array Tag with the name EXA and the user wants to read 20 elements, starting with element 100 up to element 119, then the user will have to enter a configuration like shown on Figure 25.

23 Figure 24.

24 Figure 25. Example of Array Tag read from an Allen Bradley PLC. If the Array Tag to be read is a bool array, then the count represents the number of 32 Boolean blocks to read. On Figure 26 an example is shown that will read 64 bits from a Boolean Array Tag names EXABOOL. These 64 bits will be copied in the SPX5 internal database word 70.

25 Figure 26. Boolean Tag Read Example NTP Protocol The SPX5 can be configured to use an external NTP server to synchronize Date and Time. Figure 27 shows the configuration screen of the NTP Client Protocol. These are the parameters that must be configured for the NTP Client Protocol: NTP Server Address: This corresponds to the IP Address of the Main NTP server. In normal operation, the Date and Time will be requested from this server and updated internally. Backup NTP Server Address: This is the IP Address of an NTP Server to be used as a backup in case the main NTP Server stops responding to the date and time requests. If no Backup Server is available use the same IP Server of the Main NTP Server in this parameter. Time Zone Hour Offset and Time Zone Minute Offset: These parameters correspond to the offset from GWT time for the location where the gateway is installed. Request Interval: How frequently (in minutes) the time will be updated from the server.

26 Figure 27. NTP Client Configuration Screen Serial Protocol Configuration Modbus RTU Master Configuration In figure 28, the Modbus RTU Master Protocol Configuration Screen is shown. In the Port Settings section the user selects the physical interface to use, the baud rate, parity, data bits and stop bits. These settings must match exactly those from the Modbus RTU Slaves that want to be accessed. In the Protocol Settings section the user can setup the following parameters: Command Delay: This is a minimum delay to introduce between consecutive Modbus Polls. This time is entered in Milliseconds and helps dealing with Modbus devices that are not able to execute commands at a very fast rate. Intercharacter Timeout: Maximum time to wait for a message from a slave device. Messages that takes longer than this value are considered in error. Retry Count: Maximum number of retries to a device when it is in error. Back Off: Number of seconds that a device will be kept out of scan after it enters into error state. After configuring the Protocol Settings, the user has to add Data Mapping Blocks or Commands. This is done using the buttons on the Data Mapping Section. When a Command is added or edited, the window shown in Figure 29 is shown.

27 Figure 28. Modbus RTU Master Configuration Screen

28 Figure 29. Configuring Modbus RTU Commands

29 In the General Setings field it is possible to define a Name and specify Comments Of the command. On the Command Settings tab it is possible to Enable Continue or On Data Change or Disable the command. Can be specified Poll Interval, select from one of the eight Functions Modbus. In the Device Modbus Address field the address of the record is specified Modbus with which you intend to work. In the SPX5 Database Address field, specifies the address of the Proton database where the information is to be read or written. The Register Count field allows me to specify the number of records that are involved in the operation. The Data Swap field allows me to select the type of ordering (Byte, Word and Byte-Word) that you want to apply to the value being operated. Finally in the Device Node Address field corresponds to the node address in the Modbus RTU network. An address from 0 to 255 should be used, where 0 represents a broadcast command (it is received by all devices connected to the network). It is possible to use an addressing directive in this field indirect. The indirect addressing directives available in in Word[,swap in Word[,swap in Word[,swap in Word[,swap in Word[,swap in Bits) The purpose of indirect addressing directives is to replace a real-time database value in the configuration. This allows for example enabling or disabling commands based on existing values in the database or changing the destination node of a command. For example, in the case of placing in the Device Node Address field the proton will proceed to take the value (in 16-bit integer format) of the word 100 from the database and use this value as Address of the Modbus node. If the value is invalid, for example -1, the command is automatically disabled. In this way, it is possible to have a query with a different Modbus slave address than the configured Modbus slave when modifying the word 100 of the database. Modbus RTU Slave When configuring the Modbus RTU slave protocol in the General Settings tab it is possible to include a comment describing the intent of the communication. In the Port Settings part, it is possible to select the interface (RS 485), Baud Rate ( ), Parity, Data Bits and Stop Bit. In the Protocol Settings tab it is possible to define the Slave Address, which must be a value between 1 and 255 as well as the corresponding timing. It is possible to specify the magnitude of the Response Delay as well as the Time Interval between Characters.

30 User Programmable Scripts The User Programmable Scripts are programmed using Lua. Lua is mature easy to use scripting language that is used in many products. Covering the language is out of the scope of this manual but many tutorials and programming guides can be found on the Internet. The main website for the Lua language is Examples of Useful Lua Scripts Actions at Constant Intervals To time actions at constant intervals, the user can use this snippet of code: Startup initialtime = os.time() Continuous if os.difftime(os.time(),initialtime)>1 then initialtime = os.time() -- Your script action goes in here end In the Startup Script an initialtime Variable is declared. This variable will contain the last time the action has been executed. In the Continuous Script the script checks how much time has elapsed since the last time that the action was executed. If the time exceeds one second, then the user script is executed. For other times, just replace the number 1 by the time you require. Read and Write of the SPX5 Database values This example takes a unsigned integer from Word 80 on the internal database and copies it into Word 90. The functions that will be used for this example are: maindatabase:getuint16(index,swapcode) and maindatabase:setuint16(index,value). In both functions index corresponds to the database address in bytes. Continuous local input =maindatabase:getuint16(2*80,0) maindatabase:setuint16(2*90,input)

31 Math Functions over Database Values For this example an unsigned integer value from the SPX5 database word address 100 will be read and the square root of the value will be set in word address 105 in floating point format. The value in address 105 will be sent to an Allen Bradley PLC named Qtot. Continuous local input =maindatabase:getuint16(2*100,0) output= math.sqrt (input) maindatabase:setfloat(2*105,output,0) Figure 31. Configuration of the Ethernet/IP Data Transfer of a converted value

32 Available Objects in the SPX5 Scripting Language La versión de LUA disponible en el SPX5 cuenta con un conjunto de objetos que permiten, entre otras cosas, verificar el estado de los comandos programados. WEB HMI The SPX5 is able to serve a WEB based HMI to network connected clients. The User interface screens are created using the same WEB based configuration tool used for the gateway configuration. Several types of component are available to create the screen. Among them are: Labels, Images, Values, Multistate Values, Level Bars and Value Writes. To create an HMI Screen, the user must go to the Screens menu and select Add New Screen. In the screen properties, the user is able to select the dimensions as well as the background color. Figure 31 shows the HMI Editor screen. Figure 31. HMI Screens Editor Window Once a new screen is created, it is possible to drag components to the screen. Dragging the component with the mouse or moving it with the keyboard cursor keys can change the position of the component. Also editing the coordinates in the properties window is allowed. When dealing with images, an image has to be dragged into the screen and then change the image on the Images Management Window that is accessed by clicking the Configure Image button as shown in figure 32. It is important to know that everything that is done on the HMI Screens Editor ends up in the configuration file. If large images are added, the configuration file will grow correspondingly. Most of the components have a Link property that allows configuring If clicking on the component will take the user to a different screen.

33 Figure 33 shows an example of a Screen that contains a Label with the text Label Example in the properties window it can be seen all the possible option that can be changed on the label. Value, Multistate Values and Level Bars have most of the same properties as the other components, but they also have a Data Source property. This data source property allows setting the origin of the information that will be shown on the component. Figure 32. Images Management Window

34 Figure 33. Properties that can be configured in a Label Component. Table 2 shows all the possible functions to bring data from the SPX5 database to the components that have the Data Source in in Word[,swap in Word[,swap in Word[,swap in Word[,swap in Word[,swap in Bits) Table 2. Function allowed in the Data Source Property. Values allow setting a Prefix and Suffix to the value. This is really useful to show units and value labels, without requiring to create multiple Label components for this. The Multistate component allows configuring different strings or images to different database values. Figure 34 shows the multistate configuration window. When the Data Source takes one of

35 the values show on Value, the configured text or image will be shown with the selected Foreground and Background colors. Figure 34. Multistate configuration window. The Level Bar component allows changing the width or height according to a value in the database specified by the Data Source Property. It is possible to choose the ranges of the variable as well as the colors to be shown and the growing direction.

36 Appendix.