ICP DAS USA 7000 I-7520A Pin Assignment and Specifications, 7520A RS-232 to RS-422/485 Converter

2.3 I-7520A:

2.3.1 Pin Assignment and Specifications:

7520A: RS-232 to RS-422/485 Converter

• Protocol: RS-422/485

• 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

• Option jumper for 120 ohm termination resister

• Isolation voltage: 3000V

• Isolation site: RS-232

• Repeater request: 4,000 feet or over 256 modules

•Power requirements: +10V to +30VDCPower

consumption: 2.2W(Max)

2.3.2 Block Diagram:

7000 Bus Converter User Manual (version 1.2,Feb/2003, 7PH-006-10) --------------- 16