B-TEK Scales 875-000072 User manual

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875-000072 User Manual
RS-232/RS422 to TCP/IP Converter
Rev 1.0

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Contents
SERIAL DEVICE SERVER User Manual............................................................................................................................ 1
Features..................................................................................................................................................................................... 3
1. Get Start ................................................................................................................................................................................. 4
1.1. Application Diagram ............................................................................................................................................. 4
1.2. Hardware Design................................................................................................................................................... 5
1.2.1. Hardware Dimensions .............................................................................................................................. 5
1.2.2. DB9 Pin definition ..................................................................................................................................... 5
1.2.3. RS422/RS485 Pin definition .................................................................................................................. 6
1.2.4. LED................................................................................................................................................................. 6
2. Product Functions ............................................................................................................................................................. 7
2.1. Basic Functions ....................................................................................................................................................... 7
2.1.1. Static IP/DHCP............................................................................................................................................ 7
2.1.2. Restore default settings.......................................................................................................................... 8
2.1.3. Upgrade Firmware Version.................................................................................................................... 8
2.2. Socket functions..................................................................................................................................................... 9
2.2.1. TCP Client .................................................................................................................................................... 9
2.2.2. TCP Server................................................................................................................................................. 10
2.2.3. UDP Client .................................................................................................................................................. 11
2.2.4. UDP Server................................................................................................................................................ 13
2.2.5. HTTPD Client ............................................................................................................................................ 14
2.3. Serial port ............................................................................................................................................................... 14
2.3.1. Serial port basic parameters ............................................................................................................... 14
2.3.2. Serial Package Methods........................................................................................................................ 15
2.3.3. Baud Rate Synchronization................................................................................................................. 15
2.4. Features.................................................................................................................................................................. 16
2.4.1. Identity Packet Function ....................................................................................................................... 16
2.4.2. Heartbeat Packet Function ................................................................................................................... 17
2.4.3. Editable Web server ................................................................................................................................ 17
2.4.4. Reset function .......................................................................................................................................... 17
2.4.5. Index function ........................................................................................................................................... 18
2.4.6. TCP Server setting ................................................................................................................................... 19
2.4.7. Non-persistent Connection ................................................................................................................. 20
2.4.8. Timeout Reset function ........................................................................................................................ 20
3. Parameter Setting ........................................................................................................................................................... 21
3.1. Setup software Configuration .......................................................................................................................... 21
3.2. Web Server Configuration................................................................................................................................ 21
4. Disclaimer.......................................................................................................................................................................... 23
5. Update History.................................................................................................................................................................. 23

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Features
◼10/100Mbps Ethernet port, support Auto-MDI/MDIX.
◼Support TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client.
◼Support Baud rate from 600bps to 230.4bps; Support None, Odd, Even, Mark, Space.
◼Support heartbeat packet and identity packet.
◼Support RS232, RS485 and RS422.
◼Support web server, AT command and setup software to configure module.
◼Support timeout reset function.
◼Support TCP Client non-persistent function.
◼Support DHCP/Static IP.
◼Support software/hardware reload.
◼Support virtual serial port with USR-VCOM software.

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1. Get Started
Product link:
https://www.b-tek.com/products/rs232-rs422-serial-to-tcp-ip-ethernet-converter
1.1. Application Diagram
Figure 2 Application diagram

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1.2. Hardware Design
1.2.1. Hardware Dimensions
1.2.2. DB9 Pin definition
Figure 3 Hardware dimensions
Figure 4 DB9 Pin
Pin
2
3
5
1, 4, 6, 7, 8
9
Definition
RXD
TXD
GND
NC
Default NC, can be
used as power pin

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1.2.3. RS422/RS485 Pin definition
Figure 5 RS422/RS485 pin definition
RS422: R+/R- are RS422 RXD pins and T+/T- are RS422 TXD pins.
RS485: A/B are RS485 RXD/TXD pins.
1.2.4. LED
Indicator
Status
PWR
On: Power on
Off: Power off
WORK
Flash a period every one second: Working normally
Flash a period every 200ms: Upgrading status
Off: Not working
LINK
LED for Link function. Link function can only work in TCP
Client/Server mode. TCP connection established, LINK on;
TCP connection disconnect normally, LINK off
immediately; TCP connection disconnect abnormally, Link
off with about 40 seconds delay.
Enable Link function in UDP mode, LINK on.
TX
On: Sending data to serial
Off: No data sending to serial
RX
On: Receiving data from serial
Off: No data receiving from serial
Figure 6 LED

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Serial
port
Network
1
HTTPD Client Mode
AT Command Mode
Parameter Query/Set
Serial AT command
HTTPD GET/POST
HTTPD protocol
packaging
Serial port
packaging
Network heartbeat packet
Serial port heartbeat packet
Keep-Alive
Identity
packet
TCP Server/TCP Client/UDP
Server/UDP Client/HTTPD Client
Socket
Serial port
packaging
Serial
Port
Device
2. Product Functions
This chapter introduces the functions of USR-SERIAL DEVICE SERVER as the following diagram shown, you can get
an overall knowledge of it.
Figure 7 Product Functions diagram
2.1. Basic Functions
2.1.1. Static IP/DHCP
There are two ways for module to get IP address: Static IP and DHCP.
Static IP: Default setting of module is Static IP and default IP is 192.168.0.7. When user set module in Static IP mode,
user need set IP, subnet mask and gateway and must pay attention to the relation among IP, subnet mask and
gateway.
DHCP: Module in DHCP mode can dynamically get IP, Gateway, and DNS server address from Gateway Host. When
user connect directly to PC, module can’t be set in DHCP mode. Because common computer does not have the
ability to assign IP addresses.
User can change Static IP/DHCP by setup software. Setting diagram as follow:

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2.1.2. Restore default settings
Figure 8 Static IP/DHCP
Hardware: User can press Reload over 5 seconds and less than 15 seconds then release to restore default settings.
Software: User can use setup software to restore default settings.
AT command: User can enter AT command mode and use AT+RELD to restore default settings.
2.1.3. Upgrade Firmware Version
User can contact to salespersons for needed firmware version and upgrade by setup software as follow:
Figure 9 Upgrade firmware version

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2.2. Socket functions
SERIAL DEVICE SERVER socket support TCP Server, TCP Client, UDP Server, UDP Client and HTTPD Client.
2.2.1. TCP Client
TCP Client provides Client connections for TCP network services. TCP Client device will connect to server to
realize data transmission between the serial port and server. According to the TCP protocol, TCP Client has
connection/disconnection status differences to ensure reliable data transmission.
TCP Client mode support Keep-Alive function: After connection is established, module will send Keep-Alive
packets about every 15 seconds to check the connection and will disconnect then reconnect to TCP server if
abnormal connection is been checked by Keep-Alive packets. TCP Client mode also support non-persistent
function.
SERIAL DEVICE SERVER work in TCP Client mode need connect to TCP Server and need set the parameters:
Remote Server Addr and Remote Port Number. SERIAL DEVICE SERVER work in TCP Client won’t accept other
connection request except target server and will access server with random local port if user set local port to
zero.
User can set SERIAL DEVICE SERVER in TCP Client mode and related parameters by setup software or web server as
follows:

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Figure 10 TCP Client
2.2.2. TCP Server
TCP Server will listen network connections and build network connections, commonly used for communication
with TCP clients on a LAN. According to the TCP protocol, TCP Server has connection/disconnection status
differences to ensure reliable data transmission.
TCP Server mode also support Keep-Alive function.
SERIAL DEVICE SERVER work in TCP Server mode will listen local port which user set and build connection
after receiving connection request. Serial data will be sent to all TCP Client devices connected to SERIAL DEVICE
SERVER in TCP Server mode simultaneously.
SERIAL DEVICE SERVER work in TCP Server support 16 client connections at most and will kick off oldest
connection beyond maximum connections(User can enable/disable this function by web server).
User can set SERIAL DEVICE SERVER in TCP Server mode and related parameters by setup software or web server as
follows: