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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5
S7-400/300/TDC/FM458
Ethernet Variable Access
The data source type is 21, pay attention to byte swapping, and no program needs to be written in the PLC. The data areas that can be collected are IB [0.. 65535], QB [0.. 65535], MB [0.. 65535], DB [1.. 65535], DBB [0.. 32767], and PIB [0.. 65535]. As the discontinuity of variable addresses increases, the sampling period will slow down, about 10-100ms. Enter the variable address information into the variable address field (Address). Create a symbol table that has already been defined in the engineering project and copy it into Config. csv via Excel, making appropriate adjustments. More PDA server and PLC resources are consumed than the previous plan. Can simulate through Step 7 5.5+S7-PLCSIM+NetToPLCSim. [1000,18CH,2.000ms,192.168.0.210,21S,txtNote,192.168.0.216,2] No,
Name,Adr/note
,Unit,Len,Offset
,Gain
,Type,ALM,HH CH1=, ,MW0 , ,2 ,0.000000,1.000000,INT ,0 ,0.000 CH2=, ,MW4 , ,2 ,0.000000,1.000000,INT ,0 ,0.000 CH3=, ,MW12 , ,2 ,0.000000,1.000000,INT ,0 ,0.000 CH4=, ,DB2.DBD4 , ,4 ,0.000000,1.000000,REAL,0 ,0.000 CH5=, ,DB2.DBW8 , ,2 ,0.000000,1.000000,INT ,0 ,0.000 CH6=, ,IB0 , ,1 ,0.000000,1.000000,BYTE,0 ,0.000 CH7=, ,ID4 , ,4 ,0.000000,1.000000,DINT,0 ,0.000 CH8=, ,QW6 , ,2 ,0.000000,1.000000,INT ,0 ,0.000 CH9=, ,QW10 , ,2 ,0.000000,1.000000,WORD,0 ,0.000 CH10=, ,QD12 , ,4 ,0.000000,1.000000,REAL,0 ,0.000 CH11=, ,M18.1 , ,1 ,0.000000,1.000000,BIT ,0 ,0.000 CH12=, ,M19.2 , ,1 ,0.000000,1.000000,BIT ,0 ,0.000 CH13=, ,I10.3 , ,1 ,0.000000,1.000000,BIT ,0 ,0.000 CH14=, ,I12.6 , ,1 ,0.000000,1.000000,BIT ,0 ,0.000 CH15=, ,Q20.7 , ,1 ,0.000000,1.000000,BIT ,0 ,0.000 CH16=, ,Q21.0 , ,1 ,0.000000,1.000000,BIT ,0 ,0.000 CH17=, ,DB2.DBX0.0, ,1 ,0.000000,1.000000,BIT ,0 ,0.000 CH18=, ,DB2.DBX2.2, ,1 ,0.000000,1.000000,BIT ,0 ,0.000 |
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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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