libmodbus pi 함수들

pi 라는 함수들이 있어서 찾아보니 코드로는 모르겠고

도움말에서 검색.. Protocol Independent. 무슨 의미이려나?

아무튼 메모리 1Kb 더 먹고 hostname resolve를 제공한다는 것 같은데(resolution은 또 머야..)

그 기능만 차이가 있다면 굳이 pi를 쓸 이유는 없을 듯

 

TCP (IPv4) Context The TCP backend implements a Modbus variant used for communications over TCP/IPv4 networks. It does not require a checksum calculation as lower layer takes care of the same. Create a Modbus TCP contextmodbus_new_tcp(3) TCP PI (IPv4 and IPv6) Context The TCP PI (Protocol Indepedent) backend implements a Modbus variant used for communications over TCP IPv4 and IPv6 networks. It does not require a checksum calculation as lower layer takes care of the same. Contrary to the TCP IPv4 only backend, the TCP PI backend offers hostname resolution but it consumes about 1Kb of additional memory. Create a Modbus TCP contextmodbus_new_tcp_pi(3)

[링크 : https://libmodbus.org/docs/v3.0.8/]