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NPort IA5150/5250 Series User’s Manual Web Console Configuration
5-16
ATTENTION
The Inactivity time should at least be set larger than that of Force transmit timeout. To prevent
the unintended loss of data due to the session being disconnected, it is highly recommended that
this value is set large enough so that the intended data transfer is completed.
Max connection
Setting Factory Default Necessity
1, 2, 3, 4 1 Required
Max connection is usually used when the user needs to receive data from different hosts
simultaneously. The factory default only allows 1 connection at a time.
Max. Connection 1:
NPort IA5150/5250 only allows 1 host to open the TCP connection to the specific serial port.
Max Connection 2 to 4:
Allows 2 to 4 host’s TCP connection request to open this NPort IA5150/5250 serial port, at the
same time. When multiple hosts establish a TCP connection to the specific serial port at the same
time, NPort IA5150/5250 will duplicate the serial data and transmit to all of the hosts. Ethernet
data is sent on a first-in-first-out basis to the serial port when data comes into NPort IA5150/5250
from the Ethernet interface.
Ignore jammed IP
Setting Factory Default Necessity
No or Yes No Optional
Previously, when Max connections > 1, and the serial device is transmitting data, if any one of the
connected hosts is not responding, it will wait until the data has been transmitted successfully
before transmitting the second group of data to all hosts. Currently, if you select Yes for “Ignore
jammed IP,” the host that is not responding will be ignored, but the data will still be transmitted to
the other hosts.
Allow driver control
Setting Factory Default Necessity
No or Yes No Optional
If “max connection” is greater than 1, NPort will ignore driver control commands from all
connected hosts. However, if you set “Allow driver control” to YES, control commands will be
accepted. Note that since NPort IA may get configuration changes from multiple hosts, the most
recent command received will take precedence.
Packing length
Setting Factory Default Necessity
0 to 1024 0 Optional
Default = 0, The Delimiter Process will be followed, regardless of the length of the data packet. If
the data length (in bytes) matches the configured value, the data will be forced out. The data length
can be configured for 0 to 1024 bytes. Set to 0 if you do not need to limit the length.
Delimiter 1
Setting Factory Default Necessity
00 to FF (hex) None Optional