Port Powered RS-232 to RS-485 Interface Serial Port Converter for Security Protection System

ATC-106 (ATC-101) can covert the data from RS-232C to half duplex RS-485(RS-422) signal. It don\'t need additional power supply and can get the power directly from PC side. By it\'s \"Automatic Send Data Line Control\" function, you don\'t need to use RTS, just plug it and no need to install any hardware or software and work well under RS-485(RS-422) communication.

Product features:

DB9-S/P space saving connector.

RS-232C data interface fully compatible with PC.

DB9 connector and 4-bit terminal are optional to RS-485 interface.

Automatic direction control of transmitting data (TXD), zero-latency design.

Working mode: asynchronous half duplex.

High efficiency serial port electricity stealing technology, need no external power supply, real three line (TD, RD, GND) mode communication.

Communication speed: 0-115.2KBPS.

Transmission distance: 0-1200 meter@24AWG.

Application fields:

Point to point, point to multi-point communication.

Industrial distribution system, industrial control automation.

Road traffic control automation.

Closed circuit monitoring.

Security protection system.

Intelligent card, check on work attendance gate safety system.

Construction

Interface - RS-232 to RS-485 converter

Connectors

RS-232 - DB-9 female

RS-485 - DB-9 male or a terminal block

Signals

RS-232 Side - Use Pins 3 (RD) and pin 2(TD also called SD) Pins 7 (RTS) and 8 (CTS) are tied together Pins 4 (DTR), 6 (DSR), and 1 (CD) are tied together.

RS-485 Side - 4 position terminal block - 485, +484-, +5V, GND

Data Rate

300 to 115.2 KBPS, up to 4,000 feet at 19,200 BPS

Operating Distance

Maximum Distance (feet) - 4,000, 6,000, 8,000, 10,000 (using 24 AWG wire)

Power

from the RS-232 data TD or handshake lines

Operation

Temperature - 0° to 50° C, 5% to 95% relative humidity

Dimensions

Length - 88mm

Width - 33mm

Height - 17mm