User's Manual

NPort W2150A/W2250A Series Web Console: Serial Port Settings
7-6
Connection goes down
Default always high
Options always low, always high
Description
This field specifies what happens to the RTS and DTR signals when the Ethernet connection
goes down. For some applications, serial devices need to know the Ethernet link status
through RTS or DTR signals sent through the serial port.
Always low: The selected signal will change to low when the Ethernet connection goes down.
Always high The selected signal will remain high when the Ethernet connection goes down.
Packet length
Default 0
Options 0 to 1024
Description This field specifies the maximum amount of data that is allowed to accumulate in the serial
port buffer before sending.
0: Packet length is disregarded and data in the buffer will be sent as specified by the delimiter
settings or when the buffer is full.
1 to 1024: Data in the buffer will be sent as soon it reaches the specified length.
Delimiter 1 and 2
Default Disabled
Options Disabled, Enabled, 00 to FF
Description These fields are used to define special delimiter character(s) for data packing. Enable
Delimiter 1 to control data packing with a single character; enable both Delimiter 1 and 2 to
control data packing with two characters received in sequence.
When these fields are enabled, serial data will accumulate in the serial port’s buffer unti
l the
buffer is full or until the specified delimiter character(s) are received. For example, the
carriage return character could be used as a delimiter in order to transmit each sentence or
paragraph in a separate packet. Data will be packed according to Delimiter process.
Delimiters must be incorporated into the data stream at the software or device level.
ATTENTION
When
Delimiter 1 is enabled, Packet length must be set to 0.