Serial to ethernet converter Provides the function of converting
RS232/485/422 serial port into TCP/IP network interface to realize bidirectional
and transparent data transmission between RS232/485/422 serial port and TCP/IP
network interface. The serial port device can immediately have the TCP/IP
network interface function, connect the network for data communication, greatly
expand the communication distance of the serial port device.
Serial to ethernet converter works
Serial to ethernet converter is the packet from TCP/IP protocol, parsing
into serial port data stream; On the contrary, you can also put the serial data
stream into TCP/IP protocol data packets, so as to achieve the network
transmission of data. It can connect multiple serial devices and can select and
process serial data stream, convert the existing RS232 interface data into IP
port data, so that the traditional serial data can be sent to the popular IP
channel, without prematurely eliminating the original CNC system equipment
without Ethernet module, so as to improve the utilization rate of existing
equipment, save the investment, Simplify the wiring. In the aspect of data
processing, Serial to ethernet converter is a connection oriented RS232 link and
connectionless Ethernet communication data storage control, the system to
process a variety of data, processing serial data flow from serial device, and
format conversion, Make it can be transmitted in the Ethernet data frame; The
data frame from the Ethernet is judged and converted into serial data delivery
response serial port device. In practical application, Serial to ethernet
converter is to map the Ethernet interface of TCP/IP protocol to a standard
serial port under the Windows operating system. The application program can
transmit, receive and control it like a common serial port. For example, the
general computer has two Serial ports COM1 and COM2, through Serial to ethernet
converter can be mapped to the serial port above COM3, COM4, COM5 and so on. The
application of Serial to ethernet converter is very wide, mainly used in access
control system, attendance system, vending system, POS system, building
automatic control system, self-service banking system, telecommunications room
monitoring, power monitoring and so on.
Troubleshooting 1. Use the converter to set the program, can not find the
device.
1. Because the converter setup program is set using UDP protocol, it is
generally possible that the firewall of the antivirus software will block the
UDP request, resulting in the failure to find the device.
2. Sometimes the customer has turned off the antivirus software such as
Rising and NORTON, but the device still cannot be found. In this case, it may be
the firewall of WINDOWS XP that blocks the UDP request. Right click on "Online
neighbor", select "Properties", right click on "Local connection", select
"Properties", then select "Advanced" option, click "Settings", enter the
relevant page, close the firewall.
3. Turn off all firewalls, if you still can't find the device, you must
find the network administrator, because in this case, there may be Serial to
ethernet converter set IP address and computer IP address conflict in the LAN,
may also cause the device can not be found. It may also be due to the network
administrator to manage the LAN, do not allow no registered IP address, MAC
address in the LAN running, can require the network administrator to open.
Troubleshooting 2. After the converter is equipped, it is found that the
TCP connection cannot be established.
1. It is possible that the firewall blocks the TCP connection and does not
allow it to establish a connection. The solution can be solved by referring to
some of the above methods.
2. The IP address may be incorrectly set. If the converter is acting as the
client, the server IP address is the IP address of the computer or the network
device communicating with the converter. If the converter acts as the server,
there is a "Converter as server" setting in the Setup wizard when using the
"Connection Management System" of the virtual serial port. Enter the IP address
and port number of the converter.
3 If the use of virtual serial port, must be in the "converter setup
program" "serial port parameter Settings" in the "use virtual serial port"
selection, if not selected on this option, the connection management system can
not establish a TCP connection. But if you do not use the virtual serial port,
if directly based on the WINSOCKET program, this option must be removed,
otherwise the data will appear garbled.
Troubleshooting 3: A TCP connection is established, but communication is
not possible
This situation is generally reflected in the use of virtual serial port,
more seen in the case of RS485 to TCP/IP, in normal circumstances,485 bus
communication protocol is through polling to achieve the point to multipoint
communication, if the host to the slave machine if there is no response in a
specified time, then the host as the slave machine does not exist, because our
default parameter The number is a certain delay, so the delay can be modified to
solve this problem. That is, in Serial to ethernet converter "converter setting
program" "serial port parameter setting" will be the network minimum send time
and the network maximum send byte all set to 0,0 can basically solve the
problem.
Serial to ethernet converter interface connection method of digital
devices
serial to Ethernet converter Connects to the switch:
1, 2, 3, 4, 5, 6, 7, 8(Orange white, orange, green white, blue, blue white,
green, brown white, brown) Connect to the switch
2, 8, 4, 6, 3, 5, 1, 7(orange, brown, blue, green, green white, blue white,
orange white, brown white) connect to Serial to ethernet converter
serial to Ethernet converter Connect Serial to Ethernet Converter to IOT
Router:
1, 2, 3, 4, 5, 6, 7, 8(Orange white, orange, green white, blue, blue white,
green, brown white, brown) Connect Serial to ethernet converter
X, 4, X, 5, X, X, X, X, 3(X, LAN, X, blue white, X, X, x, green white)
connect Serial to ethernet converter
