描述
RS-485总线端接在许多应用中均很有用，因为此方式有助于提高信号完整性并减少通信问题。“端接”是指将电缆的特征阻抗与端接网络匹配，使总线末端的接收器能够观察到最大信号功率。未端接或端接不当的总线将无法很好的匹配，从而在网络末端产生反射，导致整体信号完整性降低。
ALLEN BRADLEY 1745-M1 NSFP 1745M1
ALLEN BRADLEY SLC 150 EXPANSION UNIT CATALOG# 1745-E151
Allen Bradley SLC100 PLC 1745-E105
NS** ALLEN-BRADLEY 1745-E156 SLC 150 EXPANSION UNIT
One-day shipping available
1745-E107 Allen Bradley Analog Expansion 1745E107 N814
One-day shipping available
Allen Bradley Memory Module 1745-M1 ____L25.1
ALLEN-BRADLEY 1745-E106 SLC 100 Programmable Controller
Allen Bradley SLC 100 PLC Expansion Unit 1745-LP101 NR
ALLEN BRADLEY 1745-E151 SER B SLC100 EXPANSION UNIT NIB
Allen Bradley 1745-E105 1745E105 C SLC 100 Expansion Un
One-day shipping available
Allen Bradley 1745-LP101 D 1745LP101 SLC 100 Processor
One-day shipping available
