PLC power lines,I/O power lines,input signal lines,output signal lines,AC lines,and DC lines should be routed as far as possible.Switch signal lines and analog signal lines should also be wired separately,and the latter should be shielded,and the shielding layer should be grounded.Shielded cables should also be used for digital transmission lines,and the shielding layer should be grounded.Since the current in the twisted pair is opposite in direction and equal in magnitude,the noise phase caused by the induced current can be offset,so the signal line is mostly twisted pair or shielded wire.
PLC电源线、I/O电源线、输入信号线、输出信号线、交流线、直流线都应尽量分开布线。开关量信号线与模拟量信号线也应分开布线,且后者应采用屏蔽线,并且将屏蔽层接地。数字传输线也要用屏蔽线,并且要将屏蔽层接地。由于双绞线中电流方向相反、大小相等,可将感应电流引起的噪声相瓦抵消,故信号线多采用双绞线或屏蔽线。
MY LOVE WILL BE WITH YOU – HENRI SORENSEN LAURA KRAUSS
ALBANY – ALBANY HISTORICAL SOCIETY KAREN SORENSEN (PAPE
KENNEDY – TED SORENSEN (PAPERBACK)
A BRIEF HISTORY OF THE PARADOX – ROY A. SORENSEN (PAPER
1965 “KENNEDY” by THEODORE C. SORENSEN
1980 JACKIE SORENSEN AEROBIC DANCING LP KEA-1127 NM