RS-232 to RS-485 & RS-422 Converter

RS-232 to RS-485 & RS-422 DVA Converter

DVA CONVERTER converts RS232 signals to RS422 or 485. It is an efficient solution for applying advantages of RS422/485 to legacy RS232 devices. The converter operates with no extra software installation. With simple DIP switch toggling, RS422 or RS485 can be selected. Also, the product is fully compatible with serial COM port in PC

Auto RTS Control (Auto Toggling)
Under 1:N communication environment, it is undesirable that multiple devices send data at once, causing electrical collision that leads to an error. In order to prevent this, only one device needs to send data at a time, which means that data I/O control is necessary at certain points. DVA CONVERTER performs automatic toggling by hardware, saving extra programming work.

What is RS485 Echo Mode?
The point which is different from the method for RS485 Non-echo mode is that the output signal line by itself is input again to the input signal line. Therefore, it is possible to confirm whether the data sent crashes with the data sent by another terminal or not by reading the echoed data. This operating mode is scarcely used except in some special purposes. On DVA CONVERTER all operation is controlled by hardware circuit so operation is required by application program.

Our Price $10 off >

US$79.00

Regular Price >

US$89.00

Item#	EAC-009
Description	RS-232 to RS-485 / RS-422 DVA Converter
Features	Fully compatible with PC serial COM ports Basically operates with no power (Power applied to DTR signal) Enables the use of external DC power supply (7~12V) Built in Surge Protector Auto Toggling by hardware (CS-428/9AT model only) Communication status can be monitored through LEDs DIP Switch for RS422/485 mode Max. 10 Device Connectivity for RS422 Multi-Drop Mode Max. 32 Device connectivity for RS485 Mode
Mode	Asynchronous serial communication
Speed	Up to 921.6Kbps
Distance	Max. 1.2Km @115.2Kbps,24AWG twisted pair cable
Connector	RS232 : DB9 Female (Male : optional) RS422/485 : Terminal Block 5P
Signals	TXD, RXD, RTS, CTS, GND for RS232
Protection	3KV Isolation among sides 15KV Surge Protection for all signals
Data Bits	5, 6, 7, 8
Stop Bits	1, 1.5, 2
Parity	None, Even, Odd, Space, Mark
RS422 mode	Point-to-Point, Multi-Drop
RS485 mode	Echo, Non-Echo
RTS Control	RS422/485 mode switch
OS	No Software Required
Power Input	7~12VDC
Power Consumption	0.4W (33mA@12V)
LED	Power, TX, RX
Dimensions	74(W)x37(H)x19(D)mm
Weight	33g
Enclosure	Plastic (Blue Color)
Operating Temp	0 ~ 55°C (32~131°F)
Dimensions	125(W)x80(D)x60(H)mm
Parts included	Converter unit, AC/DC Power Supply, Instruction Manual

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