[?]: Кол-во коммутационных связей CPU 317F-2 PN/DP

[shapovalov]

Всем доброго времени суток.
Есть такая проблема, может кто чего подскажет.
Имеем в наличии CPU 317F-2 PN/DP. Manual говорит о том, что количество коммутационных соединений S7 у него до 30.
А на практике больше 16-ти программа не дает поставить.
Так вот вопрос: В инструкции ошибка или я может что не так делаю???

[bilbo_321]

Hi,
In the manual "S7-300 CPU 31xC and CPU 31x: Technical specifications" http://cache.automation.siemens.com/dnl ... _en-US.pdf you can see:

"Allocating connections by means of programming
In S7 basic communication and in open Industrial Ethernet communication with TCP/IP, the
user program establishes the connection. The CPU's operating system initiates the
connection. S7 basic communication uses the corresponding S7 connections. The open IE
communication does not use any S7 connections. However, a maximum number of
connections also applies for this type of communication:
● 8 connections with the CPU 314C-2 PN/DP
● 8 connections for CPUs 315-2 PN/DP
● 16 connections for CPUs 317-2 PN/DP
● 32 connections with the CPU 319-3 PN/DP"

So, for your PLC it is 16.
I think there is opportunity to use switched connections (open connection -> transmit data -> close connection), but you have to read more manuals.

Cheers.

[shapovalov]

OK, thank you