NPort W2150A-W4/W2250A-W4 Series User Manual
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Max connection
Default
1
Options
1 to 8
Description
This field specifies the maximum number of connections that the serial will accept port.
1: Only one specific host can access this serial port, and the Real COM driver on that host
will have full control over the port.
2 to 8: This serial port will allow the specified number of connections to be opened
simultaneously. With simultaneous connections, the Real COM driver will only provide a
pure data tunnel with no control ability. The serial communication will be determined by
the NPort rather than by your application program. Application software that is based on
the Real COM driver will receive a driver response of “success” when using any of the
Win32 API functions. The NPort will send data only to the Real COM driver on the host.
Data received from hosts will be sent to the attached serial device on a first-in-first-out
basis.
ATTENTION
When Max connection is two or greater, the serial port’s communication settings (i.e., baudrate, parity,
data bits, etc.) will be determined by the NPort. Any host that opens the COM port connection must use
identical serial communication settings.
Ignore jammed IP
Default
Disable
Options
Disable, Enable
Description
This field specifies how an unresponsive IP address is handled when there are simultaneous
connections to the serial port.
Disable: All transmission will be suspended if one IP address becomes unresponsive.
Transmission will only resume when all hosts have responded.
Enable: Data transmission to the other hosts will not be suspended if one IP address
becomes unresponsive.
Allow driver control
Default
Disable
Options
Disable, Enable
Description
This field specifies how the port will proceed if driver control commands are received from
multiple hosts that are connected to the port.
Disable: Driver control commands will be ignored.
Enable: Control commands will be accepted, with the most recent command received
taking precedence.
TCP port
Default
4001
Options
0 to 9999
Description
This field specifies the TCP port number that the serial port will use to listen to connections,
and that other devices must use to contact the serial port.
Cmd port
Default
966
Options
Description
This field specifies the TCP port number for listening to IP-Serial Lib commands from the
host.
