ETT ET-RS422/485 Quick Start Manual

Isolation din

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ET-RS422/485 ISOLATION DIN

SPECIFICATIONS OF ET-RS422/485 ISOLATION DIN

1. CHIP ADM2587E is used as Line Driver to convert Signal ISOLATE

2. Baud Rate 115.2 kbps

3. Cable 4000 feet (1.2 km) in length

4. Change Signal RS232 to RS422 as Full Duplex by using 4-Wire

5. Change Signal RS232 to RS485 by using 2-Wire

6. Half Duplex Connection uses 2-Wire to be either Automatic or Handshake (RTS ON, RTS OFF)

7. Use RS232 Connector as DB9 Type.

8. LED displays state of running; green LED for receiving data (RX), yellow LED for transmitting data (TX), and red LED for

RS485

9. Be compatible with Voltage in the range of 9-24 VDC

10. Can install the box on Din rail

ETT CO.,LTD

www.etteam.com

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Summary of Contents for ETT ET-RS422/485

Page 1 ET-RS422/485 ISOLATION DIN SPECIFICATIONS OF ET-RS422/485 ISOLATION DIN 1. CHIP ADM2587E is used as Line Driver to convert Signal ISOLATE 2. Baud Rate 115.2 kbps 3. Cable 4000 feet (1.2 km) in length 4. Change Signal RS232 to RS422 as Full Duplex by using 4-Wire 5.
Page 2 COMPOSITION OF ET-RS422/485 ISOLATION DIN 1. Connector Voltage is compatible with voltage in the range of 9-24VDC. 2. Signals of Connector RS422/485 are listed below; - TX(+) is Signal for transmitting data of RS422/485. - TX(-) is Signal for transmitting data of RS422/485.
Page 3 Signal RTS is OFF, it becomes receiver instead. - RS485-AUTO uses circuit internal ET-RS422/485 ISOLATION DIN to check signal of transmitting data. If it transmits any signal, the circuit will be transmitter; but if it does not transmit any signal, the circuit becomes receiver automatically.
Page 4 HOW TO CONNECT & USE Connect ET-RS422/485 ISOLATION DIN to COM PORT of computer through Cable RS232 and another one side is connected to Cable to connect to RS422/485 devices or may be connected to another one box (please read more information in the next section).
Page 5 Cable free (floated) and both devices is allowed to transmit data. After both sides transmitted data completely, the Slave device must send Command to notify the Master device to know that the transmission is complete and the Master device will scan the next Slave device. ETT CO.,LTD www.etteam.com...
Page 6 NOTE: When connecting signal as RS485, the side of TX and RX must be connected as parallel; so Fail Safe Bias Resistance is also connected as parallel. In this case, it has to remove Jumper RZ, RL, RH or TZ, TL, TH and now there is only one Fail Safe Bias Resistance. ETT CO.,LTD www.etteam.com...