| ??? 09/28/03 20:23 Read: times |
#55666 - RE: Grounding Questions for 8051+75176 Bus Responding to: ???'s previous message |
I have read the articles and find them way interesting , but they
doesnt seems to answer some of my questions . 1) The Bulletproof article doesn't tells much about shield grounding, what about in cases of plastic chasis where to tie the Shield ground ? .If we connect two Battery powered equipments which has floating supplies? 2) I have only 7 devices to connect to 485 bus and bit wondering about their electrical spacing Please find the following .I have considered termination at the two ends is the below arrangement fine . SLAVE3-----5feet-----SLAVE2------5feet------SLAVE1------5feet-----MASTER . | | | | | 100 Feet cable run (from single Vcc and Gnd ) . | | | | | | ----SLAVE4-----5feet------SLAVE5------5feet------SLAVE6 . With this my cable run is roughly 125 feet . 3) I am sending Vcc and GND cable to each node so do I require galvanic isolation ? 4) Anything that I have missed . Kindly/ |



