apache-plc4x

问题 In the Apache PLC4X project (https://plc4x.apache.org) we are implementing drivers for industrial PLCs using Netty. Here usually a variety of protocols are layered. Some times one layer requires us to split up one message into multiple messages of the underlying layer. Now we are facing one big problem: One protocol negotiates a maximum number of unconfirmed messages per connection. So we can't send more messages to that than this maximum or the receiver will simply send an error response.

问题 I am discovering the Plc4x java implementation which seems to be of great interest in our field. But the youth of the project and the documentation makes us hesitate. I have been able to implement the basic hello world for reading out of our PLCs, but I was unable to write. I could not find how the addresses are handled and what the maskwrite , andMask and orMask fields mean. Please can somebody explain to me the following example and detail how the addresses should be used? @Test void