TCP-IP to RS232/422/485 Converter
1.0 Introduction
The CV-940-TCP is cost effective and highly integrated serial
–to-Ethernet Converter. Embedding a 8051 CPU, 64KB OTP
ROM, 32 K bytes SRAM, 10/100Mbps Ethernet and serial
port support handshake RTS,CTS. CV-940-TCP Can control
1x RS232/422/485 devices located virtually anywhere (via
Ethernet or Internet).
Automatically nds devices in the network Conguration
over driver panels, serial port, Telnet, web Browser, SNMP
automatic mode switching between Driver and RAW mode
Support TCP/IP, UDP, DHCP, PPPoE, Dynamic DNS.
CV-940-TCP
Installation Instructions
2.0 Features
• 3-in-1 RS-232\422\485 interface Max.230Kbps serial
interface and 10\100 Mbps Ethernet
• Supports 4-and 2-wire Rs-485 with AUTO-SEND and
built- in terminator
• Supports industrial 24 VDC power input and optional
Power over serial
• Terminal block accessories for easy RS-422\485 serial
wiring
• Supports IP conguration By MAC address
• Supports conguration store and copy for deployment
• Supports Driver, TCP server/Client, UDP Server/Client,
Pair connection operation modes Easy and powerful
conguration program
• Approval CE, RoHS
3.0 Hardware Installation& Initial
Setup RS-232 Pinout: (DB 9 Mail)
DB9 Male Signal I/O
PIN1 RXD IN
PIN2 TXD OUT
PIN5 GND -
PIN7 RTS OUT
PIN8 RTS IN
RS-422/485 Pinout: (Six Terminal from left)
Terminal
No
RS422
RS485
1 2 3 4 5 6
T+ T- R+ R- VIN GND
485+ 485- - + VIN GND
3.3 Connect to 10/100M
CV-940-TCP 10/100/M port connect to switcher or HUB use
straight-Through Cable.
ATC-1000
RJ45 Jack
Connector
RJ45 Plug
Pin 1
3.4 Power Supply
CV-940-TCP TCP/IP converter can adopt the product’s 12V
power adapter for power supply or adopt power from other DC
power or device .( +9 - +24V@500-100mA )
3.5 CV-940-TCP LED Indication
LINK: Indication Ethernet link, Green on Ethernet Link
established
ACT: Data Sending /Receiving between Serial and the Ethernet
PWR: Indication Power
Straight through cable
Cable Wiring
1
2
3
6
Hub
RJ45 Jack
Connector
1
2
3
6
Tx+
TxRx+
Rx-
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CV-940-TCP
3.6 Connection Diagram RS232 Connection
PC RS233
DB9 Female DB9 Female
32
23
55GND GND
RS-485 Connection
485+(1)
485-(2)
CV-940-TCP
B A
RS-485
Device
DeviceDevice
Go to TCP Mode and put the settings as given in the picture
IMPORTANT: Port Number : 4001
IMPORTANT: Telnet Server/Client must be set to “Server”
Then go to UART and put the settings as given in the picture
bellow:
IMPORTANT: Mode RS485; Baud Rate: 38400
4.0 Configuration and Operation
IMPORTANT:
Set up your computer to assign it a static IP address in the
192.168.2.2 to 192.168.2.254 range with a subnet mask
of 255.255.255.0. This is necessary to ensure that your
computer can communicate with your CV-940-TCP. If you put IP
Address in the range 192.168.1.2 to 192.168.1.255 you will
not be able to access the CV-940-TCP.
Step 1: Open your web browser and type http:192.168.2.1
in the browser’s address box. This address is a factory
set IP Address of your CV-940-TCP. Press “Enter”.
Step 2: The “ID and Password required” prompt box will
appear.
Type “admin” (default username) in the Username eld and
type “system” (default password) in the Password eld. Click
“OK”. The setup screen will then appear.
IMPORTANT: These settings are important for connecting
the Fingerprint readers, the rest, listed bellow are
advanced and are not required.
4.2 The menu features as below:
User login to enter a password.
Default ID: admin
Default Password: system
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