RTS WM300 Dokumentacja Pobierz pdf (Strona 26)

Chapter 2 Specification of Communication port for CPU module

2 – 12

(1) ASR port status flag [1] and ASR port open request flag [A]

[TCP/IP Active]

If user turns on the ASR port open request flag [A], the system will open the connection with the communication other

stations. If the other station is waiting for the connection open, the connection will be open normally and the ASR port

status flag [1] will turn ON and it will be indicated that the connection is opening. If the other station is not waiting for

the connection open and is not found, the connection will not be open normally and the ASR port status flag [1] is still

OFF and it will be indicated that the connection is closing. If user turns off the ASR port open request flag [A] while

the connection is opened, the connection will be closed and the connection status request flag [A] will turn OFF.

And if the other station closes the connection, user must turn off the ASR port open request flag [A] because it does

not turn OFF.

[A]

[1]

The other station closes the

connection.

Connection is opened at the

rising of the open request.

Connection is closed at the

falling of the open request.

Closes the connection .

: Operation by user

: Operation by system

Opens the connection.

Failure of the

connection open

Continues th

closing.

Figure 2.9 TCP/IP Active open for ASR port status flag and ASR port open request flag

[TCP/IP Passive]

If user turns on the ASR port open request flag [A], the connection open will become the waiting status. In this case, if

the other station transmits the connection open request, the connection with the other station will be opened and the

ASR port status flag [1] will turn ON and it is indicated that the connection is opening. The connection open does not

become the waiting status when the ASR port open request flag [A] is OFF. In this case, if the other station transmits

the connection open request, the connection with the other station will not be opened.

Makes the connectio

open the waiting status.

The other station closes the

connection.

Connection is closed at th

falling of the open request.

[A]

[1]

Connection is open by the ope

request from the other station.

Closes the connection.

: Operation by user

: Operation by system

Makes the connectio

open the waiting status.

Figure 2.10 TCP/IP Passive open for ASR port status flag and ASR port open request flag

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