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Process Data Acquisition – PLC -- Detailed
analysis of quality manage&industrial big data sources |
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56 PDA
system scheme for converter, RH furnace, LF furnace in steel plant |
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35
OPC / OPC Ua
The Opc data source type is 12 (OPCAutomation, read-only PLC) or 13 (OPCCom, read-write PLC), ensuring that the OPC server and authorization are installed correctly. When there are too many points collected by one PLC, the points can be divided into multiple connections, and it is recommended that the OPC group names for each connection be different. The Opc Ua data source type is 58. Rockwell AB PLC is a typical representative of OPC applications, with a comprehensive sampling period of up to 10ms. Below is an example to illustrate, with RSLinx Classic as the OPCServer. 35.1
Differences between different types of RSLinx Classic
RSLinx software comes in multiple versions to meet different price and functional requirements. In fact, they are all the same. Installing different licenses becomes different versions, and version information is displayed in the title bar at the top of the main window. If the correct activation file is not present when starting RSLinx Classic, it will run as RSLinx Classic Lite. Authorization can be transferred from a virtual floppy disk to a mobile hard drive or from a mobile hard drive to a C drive through Move Activation -32 Bit. RSLinx lite: Free, its main function is PLC programming and hardware configuration, providing the most basic functions required to support RSLogix and RSNetWorx. This version is not sold separately, but bundled with products that only require direct access to RSLinx Classic network drivers. This version does not support OPC, DDE, or the published RSLinx Classic C application programming interface (API), applicable to the following situations: (1) Programming using trapezoidal logic from RSLogix products. (2) Configure and diagnose networks and devices using RSNetWorx. (3) Configure Ethernet modules/devices (such as 1756-ENET, 1756-DHRIO, etc.). (4) Upgrade firmware using ControlFlash. (5) Browse the network and obtain device information such as firmware version. RSLinx single node: includes the necessary functions to provide communication services for all Rockwell Software products, supports OPC and DDE interfaces, but is limited to one device. Direct drivers for applications or HMI applications developed for the RSLinx Classic C application programming interface (API) are not supported. These application types require the use of RSLinx Classic OEM or higher, and are applicable to the following situations: (1) Use OPC or DDE to collect data on a device, including clients such as RSView32, Microsoft Office, Visual Basic, and web pages. (2) Programming using trapezoidal logic from RSLogix products. (3) Configure and diagnose networks and devices using RSNetWorx. (4) Configure Ethernet modules/devices (such as 1756-ENET, 1756-DHRIO, etc.). (5) Upgrade firmware using ControlFlash. (6) Browse the network and obtain device information such as firmware version. RSLinx Classic OEM: includes the necessary features to provide communication services for all Rockwell Software products, while supporting OPC and DD clients for any number of devices. This version also supports applications developed for the RSLinx Classic C application programming interface (API). RSLinx OEM version 2.2 and previous versions only support Advance DDE, while RSLinx version 2.3 and later versions support all DDE types except Fast DDE, suitable for the following situations: (1) Use OPC or DDE to collect data on any number of devices, including clients such as RSView32, Microsoft Office, Visual Basic, and web pages. (2) Programming using trapezoidal logic from RSLogix products. (3) Configure and diagnose networks and devices using RSNetWorx. (4) Configure Ethernet modules/devices (such as 1756-ENET, 1756-DHRIO, etc.). (5) Upgrade firmware using ControlFlash. (6) Browse the network and obtain device information such as firmware version. RSLinx Classic for FactoryTalk View: If you install RSLinx Classic Lite (without an activator) on a machine that already has FactoryTalk View SE/ME installed, the authorization of FactoryTalk View will be used as the RSLinx Classic startup for FactoryTalk View. RSLinx Classic for FactoryTalk View: (1) In addition to supporting FactoryTalk View SE/ME as an OPC client, it also supports RSLadder 5/500 and data monitors. (2) RSView 32, FactoryTalk Transaction Manager, RSTrend, WinView, RSLogix5/500/5000, and third-party OPC clients are not supported. (3) In RSLinx Classic v2.53 and later, RSLinx Lite enables OPC connectivity for FactoryTalk View SE/ME. RSLinx Professional: The most widely used, including OPC and DDE functions, as well as data viewing functions for PLCs and other devices. RSLinx Gateway: The most fully functional version that supports Remote OPC and gateway functions, allowing a computer with RSLinx installed to access all PLCs as a gateway. Remote HMI and VB/VBA applications, including Microsoft Office, can use remote OPC to communicate with RSLinx Classic Gateway to collect data. This feature can use multiple distributed computers to perform data collection without the need to install RSLinx Classic on each computer. In addition to the features provided by the RSLinx Classic Professional version, the following remote connections are also provided: (1) Multiple RSView32 clients access data through an RSLinx Classic Gateway (remote OPC). (2) The remote PC running RSLogix connects to the factory network through a modem to change the online program. (3) Remote Microsoft Office applications such as Excel that display factory underlying data. When the web server and RSLinx Classic are located on different computers, a webpage displays the underlying data of the factory. 35.2 Program
PLC
Write PLC program, call the other block with JSR in the main program.
Add the main program firstly for fixed scan cycle task, call other procedures in the main program with JSR. Please ask the program entryPID.ACD if need.
35.3 Install
RSLinx Classic Gateway authorization
Run the virtual floppy drive simulation program WinVF.exe to load authorization impression file gzhstar.img, run “Move Activation - 32 Bit” to move the relevant authority from the floppy disk to hard disk partition. 35.4 RSLinx OPC configure
35.5 OPC
scanning and PDA configuration
If you scan the computer with a universal Client OPC tool, all OPC and Item ID can be found, Item ID is as PDA system VARIABLE NAME, VARIABLE NAME must be same as PLC variable, "REAL" data type in PDA corresponds to the analog of PLC; "BIT" corresponds to BOOL, the number of consecutive BOOL should be a multiple of 8; "CHAR" corresponds to STRING, its length should be filled in STRING LEN column. Using of PDA OPC scanning tool pdaTools.exe->File->"OPC Client and PDA IO Manager" is more convenient, It can directly open the PDA system configuration file and test the OPC connection, and also save selected variable as a PDA configuration file "Config.csv".
The configuration of system parameters such as the sampling time is carried out.
"Activate OPC Config" may be used to test the connection with the PLC, you can display real-time values. " Open Config" may be used to open the PDA configuration file. Adjust "PDA Type", "Unit", "StrLen(string length)", "Offset", "Factor" according to the actual variable, PDA system configuration file "Config.csv" may be generated by "Save OPC config".
Example of Config.csv is below. [0,33CH,10.000ms,,12,entryPID,,,,,,,,,,,RSLinx OPC
Server] No,
Item Id
,Adr/note,Unit,Len,Offset
,Gain ,Type CH1=, [entryPID]i1
,
, ,4 ,0.000000,1.000000,REAL CH2=, [entryPID]i2
,
, ,4 ,0.000000,1.000000,REAL CH3=, [entryPID]i3
,
, ,4 ,0.000000,1.000000,REAL CH4=, [entryPID]r1
,
, ,4 ,0.000000,1.000000,REAL CH5=, [entryPID]r2
, , ,4 ,0.000000,1.000000,REAL CH6=, [entryPID]r3
,
, ,4 ,0.000000,1.000000,REAL CH7=, [entryPID]Program MainProgram.trrr[0 0
2],
, ,4 ,0.000000,1.000000,REAL CH8=, [entryPID]Program MainProgram.trr[0 13] ,
, ,4 ,0.000000,1.000000,REAL CH9=, [entryPID]Program MainProgram.tr[11] ,
, ,4 ,0.000000,1.000000,REAL CH10=,[entryPID]Program MainProgram.t2
,
, ,4 ,0.000000,1.000000,REAL CH11=,[entryPID]Program fff.p1 ,
, ,4 ,0.000000,1.000000,REAL CH12=,[entryPID]s1
,
, ,10
,0.000000,1.000000,CHAR CH13=,[entryPID]s2
,
, ,20
,0.000000,1.000000,CHAR CH14=,
,
, ,4 ,0.000000,1.000000,REAL CH15=,
,
, ,4 ,0.000000,1.000000,REAL CH16=,
,
, ,4 ,0.000000,1.000000,REAL CH17=, ,
, ,4 ,0.000000,1.000000,REAL CH18=,[entryPID]bool1
,
, ,1 ,0.000000,1.000000,BIT CH19=,[entryPID]bool2
,
, ,1 ,0.000000,1.000000,BIT CH20=,[entryPID]Program fff.abool1
, , ,1 ,0.000000,1.000000,BIT CH21=,[entryPID]Program fff.abool2
, , ,1 ,0.000000,1.000000,BIT CH22=,[entryPID]Program MainProgram.cbool2 ,
, ,1 ,0.000000,1.000000,BIT CH23=,[entryPID]Program MainProgram.cbool3 ,
, ,1 ,0.000000,1.000000,BIT CH24=,
,
, ,1 ,0.000000,1.000000,BIT CH25=,
,
, ,1 ,0.000000,1.000000,BIT CH26=,
,
, ,1 ,0.000000,1.000000,BIT CH27=,
,
, ,1 ,0.000000,1.000000,BIT CH28=,
,
, ,1 ,0.000000,1.000000,BIT CH29=,
,
, ,1 ,0.000000,1.000000,BIT CH30=,
,
, ,1 ,0.000000,1.000000,BIT CH31=,
,
, ,1 ,0.000000,1.000000,BIT CH32=,
,
, ,1 ,0.000000,1.000000,BIT CH33=,
,
, ,1 ,0.000000,1.000000,BIT 35.6 Beckhoff
OPC
Install TwinCAT and TwinCAT OPC in computer.
The OPC Server configurations are below for two PLC’s OPC.
You may now scan OPC and monitor with pdaTools.exe. 35.7 Connect to WinCC OPCCreate a new S7-300 station and generate reverse sawtooth MD1000, sine MD1004, cosine signal MD1008.
Create a new S7-1500 station and generate sawtooth DB1001.DBD0, sine DB1001.DBD4, cosine signal DB1001.DBD8.
Add these 6 variables and run in WinCC.
Run pdaTools and select OPCServer.WinCC.
"Save OPC config" can save the selected variables as PDA configuration file Config.csv for called by PDAserver, "Activate OPC config", "Activate OPC config" can activate to real-time values to display.
Real-time values and real-time curves as shown below.
35.8 Connect to
KEPServerEx OPC
Run KEPServerEX 5 Configuration to configure PLC variable.
Run pdaTools and select Kepware.KEPServerEX.
Select the Item to be collected.
Real-time values and real-time curves as shown below.
35.9 Connect
to remote OPCServer
The OPC class that is not registered in the PDA server can be imported from another computer's exported registry.
Set the PDAServer Config.csv as following figure, fill the OPCServer IP in front of the OPCserver name.
Create a user with administrator privileges and set the same password for running OPCServer and PDAServer computers, and turn off the window firewall.
DCOM configuration (for OPCServer and PDAServer). Start -> Run -> Input: dcomcnfg
The same configure is for each user, "allow" should be selected for all.
35.10
Archiving all tags fastly for WinCC, Intouch, iFix, Cimplicity and other HMI
system
HMI system archiving and
analysis function is relatively poor, They are generally with OPCServer, PDA
OPC can quickly collect all of their internal and external Tags Locally or
remotely, dedicated Ethernet cable is recommended in a remote way, it does
not affect the HMI Server. |
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Apparatus test&Fault diagnosis&Quality analysis |
Millisecond data sampling Real-time data compression Capture signal instantaneous mutation |
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PDAServer
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