HP 501 Configuration And Administration Manual page 40

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None: The HP 501 does not provide flow control. Instead, flow control is performed end-
to-end by the remote TCP device and the locally connected serial device. This is the default
value.
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XON/XOFF: Flow control is performed locally using XON/XOFF. In this case, the
attached serial device must also support software flow control.
Hardware flow control
Select one of the following values:
•
None: The HP 501 does not provide flow control. Instead, flow performed end-to-end by
the remote TCP device and the locally connected serial device.
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RTS/CTS: Flow control is performed locally using RTS (Request To Send)/CTS (Clear To
Send). In this case, the attached serial device must also support hardware flow control.
Max receive buffer
Receive buffer size in bytes. If the buffer becomes full, data is discarded until space can be
freed up. The range is from 1024 to 8192 bytes and the default is 1024 bytes.
Viewing TCP serial status and statistics
You can use the Status > TCP serial page to view information on the state of the TCP
connection and transmit and receive statistics.
State
The TCP connection state. Possible values are:
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Listen: When the TCP Mode is set to Server, this value indicates that the HP 501 is waiting
for the remote TCP client to establish the connection.
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Connecting: When the TCP Mode is set to Client, this value indicates that the HP 501 is
attempting to establish a connection with the remote TCP server. If this state persists, then it
indicates that the remote TCP server is not reachable. The HP 501 will periodically attempt
to establish the connection.
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Active: The connection has been established and data is being transferred.
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Idle: The connection has been established but no data is currently being transferred.
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Disabled: TCP functionality is administratively disabled on the serial port.
Remote IP address
The configured IP address of the remote device that can communicate with the serial device.
Connection time
The duration of the current TCP connection.
Tx (kbytes)
The number of kbytes of data transmitted from the serial device to the remote device.
Rx (kbytes)
The number of kbytes of data received by the serial device from the remote device.
40 Network configuration