Delta Electronics AH500 Operation Manual page 274


Users can set a remote IP address.

Users can set a communication port used by the remote device for this TCP connection. The port number
must be in the range of 0 to 65535.

Users can set a communication port used by the local CPU module for this connection. The port number
must be in the range of 0 to 65535.

Users can set the length of data which will be sent by the local CPU module. The length must be in the
range of 0 words to 500 words.

Uses can set an initial device in the CPU module where data which will be sent is stored.

Users can set the length of data which will be received by the local CPU module. The length must be in the
range of 0 words to 500 words.

Uses can set an initial device in the CPU module where data which will be received is stored.

Users can set a maximum keepalive time for the connection. If no data is transmitted, and the keepalive
period has elapsed, the CPU module will terminate the connection automatically.
The port number used by the local CPU module and the port number used by the remote device can not be the
same, and the devices where data which will be sent is stored can not overlap the devices where data which
will be received is stored. If the IP address of the remote device is 192.168.1.100, the port number used by the
remote device is 65500, and the port number used by the local CPU module is 65501, the remote device and
the local CPU module can transmit data through this TCP connection.
If the local CPU module wants to send 10-word data to the remote device, the data will be stored in D0~D9
before the data is sent. If the local CPU module receives 20-word data from the remote device, the data will be
stored in D100~D119.
If the length of data received is larger than the length set, the first 20-word data will be stored in D100~D119,
and the data after the first 20-word data will be discarded. Likewise, if the length of data received is less than
the length set, the data will be stored in the devices starting from D100, and the values in devices where no
new data is stored will be retained.
If no data is transmitted, and 60 seconds have elapsed, the CPU module will close the socket, and terminate
the connection.
*. The parameters set in HWCONFIG must be downloaded to the CPU module so that they can take effect. (Please
refer to section 8.2.6 or section 8.4.4 for more information.)
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C h a p t e r 8 H a r d wa r e C o n f i g u r a t i o n