KYLAND KPS310XA Series User manual

KPS310XA&320XA Serial Server user manual
Issued Date: May, 2022
Version: V1.1

Disclaimer:
Kyland Technology Co., Ltd. tries to keep the content of this manual as accurate and
as updated as possible. This document is not guaranteed to be error-free, and we
reserve the right to amend it without notice to users.
All rights reserved.
No part of this documentation may be excerpted, reproduced, translated, annotated or
duplicated, in any form or by any means without the prior written permission of
KYLAND Corporation
Copyright © 2022 Kyland Technology Co., Ltd.

KPS310XA&320XA Serial Server user manual
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Table of Contents
1 Product Introduction ..................................................................................................................................1
1.1 Summary.................................................................................................................................................... 1
1.2 Packing List............................................................................................................................................... 1
1.3 Product characteristics............................................................................................................................... 1
1.4 Software function....................................................................................................................................... 2
1.5 Model number............................................................................................................................................ 2
2 Electrical characteristics and specification parameters..............................................................................2
2.1 Connect power supply ............................................................................................................................... 2
2.2 Connect serial device................................................................................................................................. 3
2.2.1 RS-485 terminal resistance .........................................................................................................................3
2.2.2 Network port............................................................................................................................................... 3
2.3 LED Indicator............................................................................................................................................ 4
2.4 Dimensions................................................................................................................................................ 4
2.5 PIN definition ............................................................................................................................................ 6
2.5.1 Network interface......................................................................................................................................... 6
2.5.2 Serial interface .............................................................................................................................................6
2.5.3 Power input interface....................................................................................................................................8
2.6 Specification ............................................................................................................................................... 9
2.6.1 Network interface......................................................................................................................................... 9
2.6.2 Serial interface .............................................................................................................................................9
2.6.3 Serial port communication parameter ......................................................................................................... 9
2.6.4 Serial port signal .........................................................................................................................................9
2.6.5 LED indicator.............................................................................................................................................. 9
2.6.6 Button........................................................................................................................................................ 10
2.6.7 Mechanical structure................................................................................................................................. 10
2.6.8 Environment condition..............................................................................................................................10
2.6.9 Warranty ................................................................................................................................................... 10
3 Web page configuration...........................................................................................................................10
3.1 Login........................................................................................................................................................ 11
3.2 Home page............................................................................................................................................... 11
3.3 Network................................................................................................................................................... 11
3.3.1 Interface ....................................................................................................................................................11
3.3.2 Interface bridge......................................................................................................................................... 13
3.4 Application .............................................................................................................................................. 14
3.4.1 Time synchronization................................................................................................................................ 14
3.4.2 FTP settings ..............................................................................................................................................15
3.4.3 Email warning settings..............................................................................................................................16

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3.4.4 SNMP settings...........................................................................................................................................16
3.4.5 MAC address filter settings....................................................................................................................... 17
3.4.6 Basic Alarm .............................................................................................................................................. 18
3.4.7 Power down alarm settings ....................................................................................................................... 19
3.5 User.......................................................................................................................................................... 19
3.5.1 User management...................................................................................................................................... 19
3.5.2 Modify password....................................................................................................................................... 20
3.6 Serial server............................................................................................................................................. 20
3.6.1 Serial interface settings............................................................................................................................. 20
3.6.2 Status information..................................................................................................................................... 25
3.7 System ..................................................................................................................................................... 25
3.7.1 Log............................................................................................................................................................ 25
3.7.2 Backup/Restore......................................................................................................................................... 26
3.7.3 Upgrade.....................................................................................................................................................27
3.7.4 System reset ..............................................................................................................................................27
3.7.5 Reboot.......................................................................................................................................................28
3.8 Help ......................................................................................................................................................... 28
3.9 Exit .......................................................................................................................................................... 28
4 Operation example...................................................................................................................................29
4.1 Ethernet port bridge operation example................................................................................................... 29
4.2 Transparent transmission operation example........................................................................................... 31
4.3 Modbus RTU operation example............................................................................................................. 33

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1Product Introduction
1.1 Summary
The KPS310XA&320XA series Serial Server is an industrial Serial Server based on Linux
system architecture and ARM 9 processor. It is mainly used for the conversion of communication
regulations. Through data acquisition, storage and control operations, it can realize online real-time
monitoring and remote control and other functions, and can be used as the terminal equipment of the
industrial Internet platform.
This Serial Server supports TCP Client, TCP Server and UDP network modes, supports
transparent transmission and Modbus RTU data transmission protocols.
The Serial Server can be divided into RS232 and RS485 two serial communication modes. The
RS-485 Serial Server provides a switchable terminal resistance of 120Ω to reduce signal reflection
and effectively improve the stability and reliability of RS-485 serial port communication.
1.2 Packing List
KPS310XA&320XA series Serial Server packaging includes the following accessories：
➢One KPS310XA&320XA Serial Server device
➢Installation user manual
➢Qualified certificate
Description: If any of the above items are lost or damaged, please contact the sales
representative.
1.3 Product characteristics
➢Provide 1 or 2 Ethernet interfaces, and 1~8 RS-232/RS-485 serial ports
➢Support Socket operation mode, include TCP Server, TCP Client and UDP
➢Support transparent transmission and Modbus RTU data transmission protocol
➢Support 3KV isolation protection for serial port, and 1.5KV isolation protection for network
port.
➢Air with ±8KV, Contact with ± 6kv electrostatic protection, protection level is level 3, B
➢Support the alarm and one-click recovery function
➢IP40 protection level
➢Metal enclosure, wide temperature -40℃~+75℃
➢Integrated software configuration tool KyCMT
➢……

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1.4 Software function
Route: support static route
Safety: support SSH, MAC address binding and user classification
Device management: support Web management (HTTP/HTTPS)
Support KyCMT integrated debugging management tool (device search, IP
address configuration, etc.)
Support ICMP control message
Support SNMP v2c
Support SNMP Trap
Support ARP、DNS、DHCP Client
Device maintenance: support software upgrade via WEB
Support FTP, TFTP, Syslog
Support SMTP Email alarm
Support device alarm LED
Support breakpoint reconnection
Clock feature: support NTPv3 Client
1.5 Model number
➢KPS3101A-E-1T1D-232-L17 KPS3101A-E-1T1D-485-L17
➢KPS3102A-E-1T2D-232-L17 KPS3102A-E-1T2D-485-L17
➢KPS3204A-E-2T4D-232-L17 KPS3204A-E-2T4D-485-L17
➢KPS3208A-E-2T8D-232-L17 KPS3208A-E-2T8D-485-L17
2Electrical characteristics and specification parameters
2.1 Connect power supply
KPS310XA&320XA Serial Server is powered by the power terminal connection to the 12-48V
DC power supply.
The device operates immediately when connecting the power, and the power indicator located on the
front panel of the device shines. The device has the reverse connection protection, overload protection and
power down alarm function.
Power requirement：
Input voltage: 24V DC (12-48VDC)
Terminal block: 2-pin plug-in terminals
power：KPS3101A：1.0W

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KPS3102A：1.0W
KPS3204A：1.5W
KPS3208A：1.6W
2.2 Connect serial device
The serial port of the KPS310XA&320XA Serial Server device is located on the front panel of
the device. If you are trying to connect multiple devices to the serial port, all devices must use the
same communication protocol
Pin description of serial port refer to section 2.5: pin definition.
2.2.1 RS-485 terminal resistance
When using the RS-485 transmission mode in complex industrial environments, it may need to
increase the terminal resistance and reduce the signal interference caused by serial signal reflection.
KPS310XA&320XA Serial Server serial port has the default pull-up/drop-down resistance of
1KΩ/150KΩ. For each serial port, the DIP switch on the top panel of the Serial Server device is used
to enable/disable the 120Ωterminal resistance of the RS-485.
Set 120Ω terminal resistance on KPS310XA&320XA: Identification n of the DIP switch
corresponds to the serial port Sn. When the n DIP is switched to the ON, the terminal resistance of
the corresponding Sn serial port is enabled; when the n DIP is switched to the OFF, the terminal
resistance of the corresponding Sn serial port is disabled; the terminal resistance is disabled by
default on the Serial Server device.
2.2.2 Network port
KPS3101A/KPS3102A Serial Server has 1 10/100Mbps network port; KPS3204A/ KPS3208A
Serial Server has 2 10/100Mbps network ports, it is located in the front panel of the Serial Server.
The Serial Server device can connect to the other host or network through the network port.
When working normally, the Serial Server can be connected to network by the network cable.
When initialization and fault detection are required, the Serial Server can be directly connected to PC
by the network cable. When the Serial Server is running, the green and yellow LED lamps on the
network port will light to indicate whether the Serial Server is connected to the network and the rate
of accessing the network.
KPS3101A/KPS3102A Serial Server has one IP and one MAC address; KPS3204A/KPS3208A
Serial Server has 2 IP addresses and 2 MAC addresses, the IP address can be changed by user, the
MAC address can’t be changed;
If you want to connect multiple devices to the network, the external network device must keep

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the same network segment as the network port of the Serial Server and no IP, MAC address conflicts.
2.3 LED Indicator
The LED indicator of KPS310XA&320XA Serial Server is located on the front panel of device.
Table 1 LED indicator
LED
Description
Reset
Green
Flash: press Reset Button for more than 3 seconds
ON: press Reset button for less than 3 seconds
OFF: Reset button do not press
Power
Green
ON: input power connects and runs normally
OFF: input power disconnects or runs abnormally.
Run
Green
Flash: system running normal (1Hz frequency)
OFF: mainboard CPU system is abnormal
Alarm
Green
Flash: The system is dead or abnormal (2Hz frequency)
OFF: system is normal
RJ45
(Link/ACT)
Green
ON: The port has established a valid network connection
Flash: Port is active.
OFF: The port has not established a valid network
connection
RJ45
(10/100M)
Yellow
ON: 100M working status (100Base-TX)
OFF: 10M working status (10Mbase-TX)
Tx-n
Green
Flash: The data is being transferred on the serial port n.
OFF: No data transmission on the serial port n.
Rx-n
Green
Flash: The data is being received on the serial port n.
OFF: No data transmission on the serial port n.
Note: The value of n in above table is the serial port ID number, such as Tx1 for serial port 1.
KPS3101A and KPS3102A only has one RJ45 port.
2.4 Dimensions
Dimension: KPS3101A：123x90x30 mm
KPS3102A：123x90x30 mm
KPS3204A：150x92x30 mm

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KPS3208A：177x100x44 mm
Unit: mm
Figure 1 KPS3101A/3102A dimension drawing
Unit: mm
Figure 2 KPS3204A dimension drawing

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Unit: mm
Figure 3 KPS3208A dimension drawing
2.5 PIN definition
2.5.1 Network interface
Table 2 Network port definition
Pin
MDI-X signal
MDI signal
1
Rx+
Tx+
2
Rx-
Tx-
3
Tx+
Rx+
6
Tx-
Rx-
4-8
undefinition
undefinitio
n
2.5.2 Serial interface
KPS310XA&320XA Serial Server serial interface is terminal block, it can be connected to
external serial port device through terminal block. Serial port can be RS-232 and RS-485. Each
Serial Server only supports one serial port type.

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Table 3 KPS3101A terminal definition
Pin
Port ID
RS-232
RS-485
1
S1
GND
GND
2
RxD
Data-(B)
3
TxD
Data+(A)
Table 4 KPS3102A terminal definition
Pin
Port ID
RS-232
RS-485
1
S1
GND
GND
2
RxD
Data-(B)
3
TxD
Data+(A)
4
S2
GND
GND
5
RxD
Data-(B)
6
TxD
Data+(A)
Table 5 KPS3204A terminal definition
Pin
Port ID
RS-232
RS-485
1
S1
GND
GND
2
RxD
Data-(B)
3
TxD
Data+(A)
4
S3
RxD
Data-(B)
5
TxD
Data+(A)
6
GND
GND
7
S2
GND
GND
8
RxD
Data-(B)
9
TxD
Data+(A)
10
S4
RxD
Data-(B)
11
TxD
Data+(A)
12
GND
GND
Table 6 KPS3208A terminal definition
Pin
Port ID
RS-232
RS-485
1
GND
GND

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2
S1
RxD
Data-(B)
3
TxD
Data+(A)
4
S3
RxD
Data-(B)
5
TxD
Data+(A)
6
GND
GND
7
S5
GND
GND
8
RxD
Data-(B)
9
TxD
Data+(A)
10
S7
RxD
Data-(B)
11
TxD
Data+(A)
12
GND
GND
13
S2
GND
GND
14
RxD
Data-(B)
15
TxD
Data+(A)
16
S4
RxD
Data-(B)
17
TxD
Data+(A)
18
GND
GND
19
S6
GND
GND
20
RxD
Data-(B)
21
TxD
Data+(A)
22
S8
RxD
Data-(B)
23
TxD
Data+(A)
24
GND
GND
2.5.3 Power input interface
KPS310XA&320XA Serial Server uses a 2-pin plug-in terminal block to connect the power
supply, the device has reverse connection protection, and the positive and negative of power
interface allow reverse connection.
Table 7 Power interface definition
Power
PIN
Description
PWR
V+
connect the positive pole
V-
connect the negative pole

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2.6 Specification
2.6.1 Network interface
Network interface number: KPS3101A/KPS3102A has 1；KPS3204A/KPS3208A has 2
Rate: 10/100Mbps, Adaptive
Connector: RJ45
Protocol: TCP/UDP
ESD protection: Air ±8KV, Contact ±6KV
Isolation protection: Build-in 1.5 KV
2.6.2 Serial interface
Serial interface number: KPS3101A has 1; KPS3102A has 2; KPS3204A has 4; KPS3208A
has 8.
Serial port type: RS-232/RS-485, it is optional according to model number
Connector: terminal block
ESD protection: Air ±8KV, Contact ±6KV
Isolation protection: Build-in 3KV
DIP switch: Enable/disable 120Ωterminal resistance of RS-485
2.6.3 Serial port communication parameter
Data bit: 5、6、7、8
Stop bit: 1、2
Check bit: None, Even, Odd
Baud rate: 4800bps～115200bps
2.6.4 Serial port signal
RS-232: TxD, RxD, GND
RS-485: Data+, Data-, GND
2.6.5 LED indicator
System: Power、Run
Alarm: Alarm
Reset indicator: Reset
Serial port: KPS3101A：T/Rx-1
KPS3102A：T/Rx-1、T/Rx-2

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KPS3204A：T/Rx-1、T/Rx-2、T/Rx-3、T/Rx-4
KPS3208A：T/Rx-1、T/Rx-2、T/Rx-3、T/Rx-4、T/Rx-5、T/Rx-6、T/Rx-7、
T/Rx-8
Network: KPS3101A：SPEED，ACT/LINK（RJ45）
KPS3102A：SPEED，ACT/LINK（RJ45）
KPS3204A：SPEED，ACT/LINK（RJ45）
KPS3208A：SPEED，ACT/LINK（RJ45）
2.6.6 Button
Reset: press it less than 3 seconds, device restart; press it more than 3 seconds, device recovery
factory default.
2.6.7 Mechanical structure
Enclosure: SECC Electrolytic galvanized steel plate
Protection level: IP40
Mounting: DIN or wall mount
2.6.8 Environment condition
Operating temperature: -40℃～75℃
Storage temperature: -40℃～85℃
Relative humidity: 5～95%, no condensation
Heat dissipation mode: natural cooling, no fan
2.6.9 Warranty
Warranty: 5 years
3Web page configuration
KPS310XA&320XA Serial Server supports WEB page configuration, the Web page can be
open through the browser such as Firefox browser, IE etc.to set up the Serial Server device.
Description: Take KPS3204A as examples in the following, KPS3101A, KPS3102A and
KPS3208A operations like KPS3204A, so no further described in this artic

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3.1 Login
Connect to KPS3204A Serial Server Web console: Open browser, then enter IP address of
Serial Server. The default IP address of Serial Server: Port 1 eth0:192.168.0.249; Port 2 eth1:
192.168.1.249
Figure 4 Login page
Default login username: admin, login password: admin. Enter username and password then click
“login”, then enter into Web console of Serial Server. The language English and Chinese can be
selected.
3.2 Home page
The home page interface displays the current device information of the KPS3204A Serial
Server, mainly including: serial number, hostname, software version, hardware version, and local
time etc.
Figure 5 Home page
3.3 Network
3.3.1 Interface
The network/interface page displays the relevant network parameters of the Serial Server
device, including running time, MAC address, number of received/sent packets, IP address, etc.

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Figure 6 Network page
Click Network-interface menu, network interface page shows “Edit” button. Click “Edit”
button and enter into network interface edit page, user can set up IP address, subnet mask, Serial
Server and user-defined DNS of port 1-LAN (eth0) and port 2-LAN2 (eth1). After completing the
parameter configuration, click “Apply” to make it effective.
Figure 7 LAN port edit page
Table 8 LAN port edit parameter
Parameter
Value
Description
Protocol
Static address, DHCP client
Select static address or DHCP
IP address
LAN port 1 eth0:192.168.0.249
LAN port 2 eth1:192.168.1.249
IP address
Subnet mask
255.255.255.0
Identify that the server belongs to class
A, B, or C network.
Default
gateway
0.0.0.0
The IP address of the router that
provides network access outside of the
LAN of the server.
user-defined
DNS
IP address
DNS server

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3.3.2 Interface bridge
Network-interface bridge page shows relevant network parameters of the interface bridge,
including enable bridge, IPv4 address, IPv4 subnet mask, user-defined DNS server, etc.
The interface bridge is divided into two bridge modes: LAN-LAN and LAN-WAN.
LAN-LAN bridge mode. Select enable bridge and “Ethernet Adapter eth1” to enable bridge
function, set up IP address and netmask, click “Apply”. Bridge function of network port 1-LAN
(eth0) and network port 2-LAN (eth1) are enabled successfully, two network ports can access the
device or transmit data with the device with the set IPv4 address.
Figure 8 bridge page of the same network segment
Table 9 Bridge parameter of the same network segment
Parameter
Value
Description
IPv4 address
IP address
IP address
IPv4 subnet
mask
255.255.255.0
Identify that the server belongs to class A, B,
or C network.
User-defined
DNS
IP address
DNS server
LAN-WAN bridge mode. Select enable bridge, unselect “Ethernet Adapter eth1”, select
protocol (WAN) to set up IP address and subnet mask of network port 1-LAN (eth0) and network 2-
WAN (eth1), click “Apply”. The route function of Serial Server is enabled, the IP of different
network segment can be accessed through WAN port of the device.

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Figure 9 bridge page of the different network segment
Table 10 bridge parameter of the different network segment
Parameter
Value
Description
Protocol
Static address、DHCP client
Select static IP or DHCP
IPv4 address
IP address
IP address
IPv4 subnet
mask
255.255.255.0
Identify that the server belongs to class A,
B, or C network.
IPv4 gateway
IP address
Default gateway
User-defined
DNS
IP address
DNS server
Note: KPS3204A/KPS3208A supports bridge, KPS3101A/KPS3102A does not support bridge.
3.4 Application
3.4.1 Time synchronization
Time synchronization page shows the relevant parameters of the time synchronization,
including enable NTP client, time interval, the candidate NTP server.
Enable time synchronization, the device will time to NTP server periodically with time interval
as time cycle. When multiple NTP servers are set, when the device is unsuccessful time to the first
candidate NTP server, the device will automatically time to the second calibrate NTP, and so on.

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Figure 10 Time synchronization page
Table 11 Time synchronization parameter
3.4.2 FTP settings
FTP settings page shows the relevant parameters of the device as FTP server, including enable
FTP server, FTP account, FTP password.
Enable FTP server, the Serial Server can be as FTP server to store and download file. The file
size is recommended not to exceed 30M, otherwise it may cause the Serial Server memory is
abnormal.
Figure 11 FTP settings page
Table 12 FTP settings parameter
Parameter
Value
Description
FTP account
User-defined (non-root
user)
The account for user log in FTP server
Parameter
Value
Description
Time interval
1min, 5min, 20min
Time request interval
Calibrate NTP
server
Target NTP server
The device send the time request to NTP server

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FTP password
User-defined
The password for user log in FTP server
3.4.3 Email warning settings
Email warning settings page shows the relevant parameters of email waring settings, including
enable email warning settings client, email server address, email account and password etc.
Email warning settings can regularly send waring information to the user specified mailbox,
including device IP, CPU and memory information.
Figure 12 Email warning settings
Table 13 Email warning settings
3.4.4 SNMP settings
SNMP settings page shows the relevant parameters of SNMP settings, including enable SNMP,
service port, community, Trap IP and Trap port etc.
The device information can be obtained after SNMP settings is successful, including device
time, network information, memory information, etc. And the device can regularly upload the device
Parameter
Value
Description
Email server
Server IP address
Email warning server address
Email account
Email account
Email sender login account
Email password
Email password
Email sender login password
Subject
User-defined
Email subject
Email warning
cycle
1day, 20hour, 20min,
5min, 1min
interval time of email sending
Email warning
content
Check/uncheck
IP, CPU and Mem can be checked
Email to
Email account
Email receiver account