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Process Data Acquisition – PDA -- 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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4
Profinet
Siemens S7 as the representative of a large number of automated products supports this protocol， countries and regions that support Profinet standards mainly are:
Figure 1 Countries and Regions Supporting Profinet Fieldbus The standard version PDA system configure Profinet slave station according to the onboard V2.3 CP-1616, The number of bytes collected is a multiple of 128, each slave collects up to 128*11=1408 bytes, see the following figure, more data may be collected by increasing more profinet slave station. Profinet ultimately transmits data based on MAC addresses, so different slave stations on the same PN port generally require different network cards to correspond to them in PDA servers, which support multiple network cards. A PDA server assigns multiple IP addresses to an Ethernet adapter, with each connection assigned a different FrameID. Multiple PN connection channels can be established between a PLC Ethernet adapter and a PDA server Ethernet adapter. Ask for example if you need. PDA CPU 315-2 PN_DP Profinet CP1616 onboard V2.3 1408bytes.rar PDA CPU 319-3 PN_DP Profinet CP1616 onboard V2.3 1152+1408 Bytes.rar PDA CPU 414-2 DP Profinet CP1616 onboard V2.3 1408+1408Bytes.rar S7 CPU with PN port outputs 1408 bytes within 1ms, The alone Profinet network card outputs 1408 bytes will takes 7ms because data go through the back board bus. 4.1 PDA
server as Profinet slave drop at S7-300/400/1500
Profinet device name cannot be empty string. PQB must be configured for continuous address. OB1 copy DB100 to the output address (Consistent with the address in the PLC hardware configuration). The type of data source is 8. A PDA server can collect data
more than one PLC by switch, There is no need for a dedicated Profinet board CP
Add OB80, OB81, OB82, OB83, OB84, OB85, OB86, OB87, OB88, OB121, OB122 to project. The PLC hardware configuration is as follows.
Profinet property is set to:
CPU size of the process-image output should be more than Profinet range.
Network examples are as follows:
The configuration in PDAServer is as follows: [1000,704CH,8.000ms,192.168.0.100,8S,cp-1616-onboard000,192.168.0.200] No,
Name,Adr/note,Unit,Len,Offset
,Gain
,Type,ALM CH1=, ,
, ,4 ,0.000000,1.000000,INT ,0 CH2=, ,
, ,4 ,0.000000,1.000000,INT ,0 CH3=, ,
, ,4 ,0.000000,1.000000,INT ,0 …… CH702=, ,
, ,4 ,0.000000,1.000000,INT ,0 CH703=, ,
, ,4 ,0.000000,1.000000,INT ,0 CH704=, ,
, ,4 ,0.000000,1.000000,INT ,0 4.2 PDA server as Profinet slave drop at TDCA slave station can only receive 240 bytes, the last byte is Device number, so the valid data is 239 bytes, the PDA data source type is 9. set the Profinet network attribute as below.
The configuration of slave station 1 is below.
The configuration of slave station 2 is below.
Initialize the Profinet.
Send data.
The PDA configuration is below.
4.3 Profinet gateway as Profinet slave stationProfinet gateway is a Profinet-RT Ethernet coupler, It is actually a high speed PLC, It forwards the data received from Profinet to the PDA server through the real time Ethernet, Effective acquisition cycle can be ms level. The type of data source is 36. S7 PLC Profinet master station configuration is similar to previous section. The scheme is not recommended.
A gateway can be used as a number of slave stations, Up to 1408 bytes can be collected by one stations. Profinet property of update Time is set to 2ms. The data to be collected will be assigned to the PQB address of the Profinet configuration in the fixed interrupt block such as OB35 (set to 2ms interrupt cycle), such as: L MW 20 T PQW 0 4.4
Profinet gateway as Profinet master station
Profinet gateway send the data collected from the station to PDA server through RT-Ethernet, the effective acquisition cycle may be ms level. The type of data source is 25.
4.5 Supported PLCThey are PLCs Profinet master station being supported such as Beckhoff, S7-300/400, S7-1500, ABB, or other smart devices. Please ask for CP1616 driver GSDML-V2.25-Siemens-CP1616_onboard-20130916.xml if needed. CP1616 configuration as slave station in Beckhoff PLC is as follows:
CP1616 configuration as slave station in ABB PLC is as follows:
4.6 Collecting
data from any Profinet controller and device
A Profinet switch with management functions such as XC206-2 can forward all Profinet messages to a certain network port of the PDA. The PDA determines the connection number based on the destination MAC address and source MAC address of these messages, and the offset of the connected data point is manually determined by packet capture, which is slightly cumbersome. The data source type is 40, and the PDA configuration is as follows.
Check the IP address of the switch as shown in the following figure.
Forward the messages received and sent by the network port connected to the CPU of the PLC through the browser to the network port connected to the PDA.
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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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