PKS Secretary & brother | review the past and know the new

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PKS The Secretary of

PKS The system has its own secretary , He is Control Firewall, A firewall .

From the above figure, we can see the position of firewall in the system （ Inside the red box 2 A card is a firewall ）, He is at the switch and C300 Between controllers , in other words ,C300 The controller communicates with any other device on the network , All need to go through the firewall , Once the firewall is damaged ,C300 The communication between the controller and the server and the operation station will be interrupted . The purpose of setting firewall is to prevent FTE Communication broadcast storm on the network . To put it bluntly , The function of firewall is to filter the information on the network , Put the important 、 And C300 The information related to the controller is transmitted to C300, Irrelevant information is blocked , Not for C300. ha-ha , pitiful C300, The information he got , All are audited by the firewall , Other things , Have no right to interfere . This ensures C300 The controller uses as many resources as possible for operation and control .

The following figure shows a pair of redundant firewall cards , There is a pair of interfaces on the right side of each card , be called UPLINK, Shangliankou , Connect to respectively A、B On a pair of redundant switches . stay UPLINK On the right side of the mouth 8 A vertical array of interfaces , be called DOWNLINK, Remove the interface , Used to connect C300 Controller or fieldbus communication card , in other words , A firewall can connect up to 8 individual C300 controller . There is also... On the card of the firewall 8 individual DOWNLINK Status indicator of the interface , It is used to display the connection status of the downstream device .

The firewall does not require software configuration , Just power on , You can work normally .

PKS Brother

PKS Since the system was launched , Because it's powerful 、 The algorithm is rich 、 The advantages of stable operation have won the favor of many customers , However, the high price has also deterred many small and medium-sized users , So fast 、 Develop a set of low-cost products suitable for the middle and low-end market DCS The system is imperative .

PlantCruise The system will soon be introduced to the market , My friends and I are shocked . He and PKS Looks too much like , It's simply the twin brother of a brotherhood .

So let's see first PKS Systems and PlantCruise System similarities ：

1、 Using the same network architecture , namely FTE, Fault tolerant Ethernet

2、 It is also a server - Structure of operation station , Just change the name of the server to engineer station

3、 Also use C300 Controller and C series I/O Card , Just changed the shell , Put on new clothes

4、 The operation and configuration interface of the software are almost the same

The difference ：

1、 PKS The system is configured with firewall hardware , and PlantCruise The system doesn't have ,C300 The controller is directly connected to the switch

2、 PKS The system supports the old system PMI/O Card , and PlantCruise The system does not support

3、 PKS Systematic Flex The operation station needs to read the process data through the server , and PlantCruise All operation stations of the system read process data directly from the controller

4、 PlantCruise The software function of the system is simplified , No, PKS The software of the system is powerful

PKS System structure diagram ：

PlantCruise System structure diagram ：

PKS C300 controller ：

PlantCruise C300 controller

PKS C series I/O Card ：

PlantCruise C series I/O Card ：

at present PlantCruise The system sells through channels , It seems that the market recognition is not bad .