Delta AH500 Programming Manual page 683

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Instruction code

Explanation:

is 1 if users want to close the TCP socket, and S

is the socket number.

2. The operand S

should be either 0 or 1, and the operand S

3. Before closing the socket, users need to make sure that the socket has been connected.

Otherwise, the instruction is not executed.

4. If the TCP socket is closed by the server, the client continues to be connected to the local

communication port. If the TCP socket is closed is by the client, the client is not connected to the

local communication port. After the instruction is executed to close the TCP socket, the

corresponding flag is OFF.

5. After the instruction is executed to close the UDP socket, the corresponding flag is OFF.

6. If the TCP socket is closed, and no error occurs after the instruction is executed, the PLC is not

connected to the remote device, and the flag related to the connection's being closed is ON. If

the connection is closed successfully, the flag related to the connection's being closed is OFF. If

an error occurs, the error flag is ON.

Socket number

7. If the UDP socket is close, and no error occurs after the instruction is executed, the flag related

to the connection's having been started is OFF. If an error occurs, the error flag is ON.

Socket number

Pulse instruction 16-bit instruction (5 Steps) 32-bit instruction

： Socket mode

： Socket number

Being closing the

Ch a pt er 6 Ap p l i ed I ns t r uc t i ons

Closing the socket

is 0 if users want to close the UDP socket.

should be within the range between

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