2.2 I-7520R:

2.2.1 Pin Assignment and Specifications:

7520R: RS-232 to RS-485 Converter

Protocol: two-wire RS-485, (D+, D-), protocol

Connector: plug-in screw terminal block

Speed: “Self Tuner” inside, auto switching baud rate, from 300 to 115200 BPS

256 modules max in one RS-485 network without repeater

2048 modules max in one RS-485 network with repeater

Isolation voltage: 3000V

Isolation site: RS-485

Repeater request: 4,000 feet or over 256 modules

Power requirements: +10V to +30VDC Power consumption: 2.2W(Max)

2.2.2 Block Diagram:

7000 Bus Converter User Manual (version 1.2,Feb/2003, 7PH-006-10) ---------------

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ICP DAS USA 7000 user manual I-7520R Pin Assignment and Specifications, 7520R RS-232 to RS-485 Converter