ICP DAS USA 7000 user manual 7520/A/R/AR, PCI-7520AR, PCISA-7520R, Isolation voltage

2.I-7520/A/R/AR, PCI-7520AR, PCISA-7520R

2.1 I-7520:

2.1.1 Pin Assignment and Specifications:

7520: RS-232 to RS-485 Converter

• Protocol: Differential 2-wire half-duplex RS-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)

2.1.2 Block Diagram:

7000 Bus Converter User Manual (version 1.2,Feb/2003, 7PH-006-10) --------------- 13