2.2 I-7520R:
2.2.1 Pin Assignment and Specifications:
7520R: RS-232 to RS-485 Converter
• Protocol:
• Connector:
• Speed: “Self Tuner” inside, auto switching baud rate, from 300 to 115200 BPS
• 256 modules max in one
• 2048 modules max in one
•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, | 15 |