User Manual
Table Of Contents
- Chapter 1 Introduction
- Chapter 2 Getting Started
- Chapter 3 Initial IP Configuration
- Chapter 4 Choosing the Proper Operation Mode
- Chapter 5 Web Console Configuration
- Chapter 6 Installing and Configuring the Software
- Appendix A SNMP Agents with MIB II & RS-232 Like Groups
- Appendix B Well Known Port Numbers
- Appendix C Federal Communication Commission Interference Statement
- Appendix D FCC Warning Statement
- Appendix E Service Information
NPort W2250/2150 Plus User’s Manual Web Console Configuration
5-14
If the Inactivity time is set to 0, the current TCP connection is kept active until a connection close
request is received. Although Inactivity time is disabled, the NPort W2250/2150 will check the
connection status between the NPort W2250/2150 and remote host by sending “keep alive”
packets periodically. If the remote host does not respond to the packet, NPort W2250/2150
assumes that the connection was closed down unintentionally. NPort W2250/2150 will then force
the existing TCP connection to close.
ATTENTION
The Inactivity time should be set at least 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 can be 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 is 1. In this case, only one specific host can access this port of
the NPort W2250/2150.
Max connection 1
Allows only 1 host to open the specific NPort W2250/2150 serial port.
Max connection 2 to 4:
Allows 2 to 4 hosts to open the specific NPort W2250/2150 serial port, at the same time. When
multiple hosts open the serial port at the same time, the COM driver only provides a pure data
tunneling without control ability.
Data will be sent first-in-first-out when data comes into the NPort W2250/2150 from the Ethernet
interface.
ATTENTION
When Max connection is set to 2, 3, or 4, NPort W2250/2150 will use a “multi connection
application” (i.e., 2, 3, or 4 hosts are allowed access to the port at the same time). When using a
multi connection application, NPort W2250/2150 will use the serial communication parameters
set in the console. All of the hosts connected to that port must use the same serial settings. If one
of the hosts opens the COM port with parameters that are different from NPort W2250/2150’s
console setting, data communication may not work properly.
Data Packing
Delimiter 1/2
Setting Factory Default Necessity
00 to FF (hex) None Optional
Once the NPort W2250/2150 receives both delimiters through its serial port, it immediately packs
all data currently in its buffer and sends it to the NPort W2250/2150’s Ethernet port.