搞哪种FCS ?既然确定搞FCS,面对种类繁多的现场总线,应该搞哪种呢?分析现场总线多样性产生的原因,有助于理清这一思想。造成现场总线多样性的局面,一是因为行业习惯,如Profibus一直应用于PLC行业,FF应用于仪表行业;二是由于利益冲突,各工控厂商都不愿意放弃自己的标准而丧失已占用的。显而易见,现场总线标准统一尚为时过早。鉴于此,对于我国工控界的发展,建议采取以下策略:
NEW Juniper PE-AS2 Adaptive Services M7i M10i PE-ASII
90 Day Hardware Warranty – Free Overnight Shipping!
NEW Juniper DX-3280-SLB-SSL-S-2C Load Bal App Accel
90 Day Hardware Warranty – Free Shipping!
Avaya IG550 Juniper J6350 Int Gateway TGM550 TIM510
90 Day Hardware Warranty – Free Shipping!
New Surplus Cisco uBR 3×10 RF Switch UBR-RFSW-3X10
90 Day Hardware Warranty – Free Shipping!
Juniper Netscreen Secure Access 5000 NS-SA-5020A
90 Day Warranty – Free Shipping!
NEW Cisco MCS-7845-H1-CC1 Media Convergence Server
90 Day Warranty – Free US Shipping!