為了減小噪聲干擾產(chǎn)生的誤差，建議使用屏蔽雙絞線。應(yīng)確保極性的正確，例如保護裝置必須將所有的RS485“+”端子和所有的RS485“-”端子分別連接在-一起。COM端子應(yīng)連接到屏蔽的公用線(如果提供)上。為避免環(huán)流，屏蔽應(yīng)單點接地。保護裝置應(yīng)采用菊花鏈模式相互連接

HONEYWELL Q795A-1012 NSFP Q795A1012

HONEYWELL L404C-1147 NSFP L404C1147

HONEYWELL ST71A-1034 USPP ST71A1034

HONEYWELL DP3050A-1000 USPP DP3050A1000

HONEYWELL FE-MLS8C

HONEYWELL FE-MLS8C

Honeywell 972AA4WI-D3P-L?F7-S18 Proximity Switch micro

HONEYWELL HPX-F2-H PHOTO SENSOR HPXF2H

Measurex , Honeywell power supply part # 40-77

HONEYWELL T915C 1449 TEMPERATURE CONTROLLER

HONEYWELL TEMPERATURE CONTROL T631C-1020 T631C1020

HONEYWELL T678A 1015 OUT OF BOX

HONEYWELL 4DP7APXID211 INPUT MODULE

HONEYWELL MICRO SWITCH 1LS1

947-F4Y-2D-1C0?-300E HONEYWELL FIBER OPTIC SENSOR