Installation guide

Industrial Networking Solutions
8-11
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Serial Device Servers >
Introduction to Serial Device Servers
8
Serial devices connected to the NPort® 5000 device server can
communicate over the network with more than one host computer.
Up to 31 RS-485 devices, or 9 RS-422 devices, can be connected to
each serial port on the NPort® 5000 device server. The web console or
Windows utility can be used to configure RS-422 or RS-485 operation
for each port, with both 2-wire and 4-wire RS-485 supported.
Typical Applications
Automatic or remote data acquisition can be accomplished with
NPort® 5000 device servers, which only require one IP address to
connect up to 16 serial devices to an Ethernet network. By specifying
the IP address and TCP port number, a host computer can access the
serial devices connected to the NPort® 5000 from over the network. In
the example shown here, data from the NPort® 5410’s first serial port
can be obtained by connecting to 192.168.10.2:4001.
Use only one IP address to control multiple serial devices over the network
Use server sharing from a central location for greater device management fl exibility
Centralize RS-422/485 serial device control
Mode Selection Flowchart
Using legacy
COM-based software?
Host requires more
COM ports?
Using MOXA's
drivers?
Real COM
Mode
RFC2217
Mode
Contact your
saleperson.
Reverse
Telnet
UDP Mode
Start
TCP Server
Mode
TCP Client
Mode
Pair
Connection
Modes
RFC2217
Mode or TCP
Server Mode
Need to extend
serial transmission
range?
Need to perform
console
management?
Host application is
server or client?
Need serial control
parameters?
Using socket
program?
Which protocol,
TCP or UDP?
YESYES
YES
YES
YES
YES
YES
YES
YES
YES
TCP
TCP UDPUDP
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
Client
Client
Server
Server