Description
采用层次化的体系结构,通信网络分布于各层并采用数字通信方式,唯有生产现场层的常规模拟仪表仍然是一对一模拟信号(如4~20mA DC)传输方式,是一个“半数字信号”系统。
Square D Sz Size 4 8536SFO1H20S Motor Starter Logic 120
Equimeter 441 Regulator Type S Size 3 3.25 C1 441S NNB
Federal Pacific Breaker FPE HFJ631225 HFJ 225 A 225A
Square D I-Line Main Lug Panelboard 400 Amp 600 V 3P 3W
Fanuc A20B-2901-0050/01A PC Memory Board A20B29010050