描述
安全PLC还必须能够执行标准机构（例如TUV、FM等）认证的必须的故障安全动作，而这些故障安全动作都是根据特定的原则设计，并满足国际安全标准（如IEC61508和EN954-1等）中定义的要求。另外，安全PLC还可能包括警卫保护预警和权限管理的内容，用来保护安全PLC不受来自外界的干扰。
From United States
Fanuc α22/1500 A06B-0146-B675 3.0kW AC Spindle Drive
(2) available!
From United States
Taylor-Wharton 34HCB 34L High-Capacity Nitrogen Dewar
Liquid Nitrogen Tank! Three (3) Available 10-Day Wrrnty
From United States
Lab Glass Vacuum Chamber 4″ OD RF Plasma Etching?
From United States
Buchi Rotovap Rotovapor Drain Stopcock Shut-off Valve
Set of (2) for one money! 20L Flask Drain valve?
