Siemens   6ES5491-0LB11  !!!  --- sales3@amikon.cn  

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TCP is generally slower than UDP because additional acknowledgement messages must be transmitted and evaluated. However, there are several instances in which it should be used: 

1. If you have a network whose quality requires a significant amount of message re-transmission, TCP can provide better overall performance because the TCP is quicker at delivery acknowledgement and retry than the application level, which typically relies on a message timeout measured in seconds. 

Siemens   6ES5491-0LB11

6ES5491-0LB11 | Siemens | INSERTED MODULE

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If you are using the Internet to access the module, you may want to consider TCP. When traversing the Internet, some gateways may break a packet up into smaller chunks, a process called fragmentation

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if you have a large purchase, we can make a discount.
specifications:

new+original +one year warranty