RS232 to RS422/RS485 Serial Converter-CQR1218
INTRODUCTION
CQR1218 is a universal RS232 to RS485/RS422 bidirectional converter, designed to extend the RS232 transmission distance and the interface converter designed for the RS485/RS422 bus, which consists of a number of CQRobot independent innovation technology. It Includes built-in data collision protection control, the power supply and signal lights and inhibition of TVS transient voltages protection. In order to adapt to RS422 / RS485 with much bus wiring, it provides a terminal at port, DB9 and RJ45 physical interface, that effectively adapt to a variety of connection mode, making the bus from multiple directions to be better contacted and more convenient to be implemented. The equipment adopts the aluminum shell of sandblasting and anti-oxidation, which can effectively shield the external interference and have good heat dissipation.
CQR1218 interface converter supports the following four communication modes:
- Point to point / 4 full duplex.
- Point to multi-points/four-line full-duplex.
- Point to point/twine and half duplex.
- Point to multi-points/two-line and half duplex.
To prevent the reflection and interference of the signal, a matching resistor is needed at the terminal of the line (the parameter is 120 ohm 1/4w) when the converter is used as full duplex or half duplex wiring.
APLLACATIONS
- Singlechip, Surveillance Camera
- Barcode Scanner
- Fingerprint Attendance Machine
- Computer PDA (WINCE system)
- Label Printer
- Engineering Exchange
- Industrial Control
- Safety Access Control
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SPECIFICATION
- Interface features: Compatible with standard EIA/TIA RS-232C/RS-485/RS-422.
- Electrical interface: RS-232 to DB9 connector; RS-422/RS-485 interface type: terminal, RJ-45, DB9.
- Protection level: 600W lightning surge protection for each RS-422, RS-485 interface.
- Operation mode: asynchronous, half duplex, or asynchronous full duplex.
- Signal indicator: power (PWR), transmission (TXD), reception (RXD).
- Transmission medium: Twisted pair or shielded wire.
- Transmission rate: 115.2K BPs to 300M, 38.4K BPS to 2.4KM, 9600 BPS to 5KM.
- Size: 113mm * 55mm * 25mm.
- Working temperature: -25 to 70 Centigrade.
- Relative humidity: 5% to 95%.
- Transmission distance: 1200meters. (1152bps-9600bps)
DISTRIBUTION LIST
- 1 * RS232 to RS485/RS422 Convertor with Charger
- 1 * Serial Cable
- 1 * DB9 to 5P Converter
