描述
大中型PLC系统应支持多种现场总线和标准通信协议（如TCP/IP），需要时应能与工厂管理网（TCP/IP）相连接。通信协议应符合ISO/IEEE通信标准，应是开放的通信网络。
PLC系统的通信接口应包括串行和并行通信接口（RS2232C/422A/423/485）、RIO通信口、工业以太网、常用DCS接口等；大中型PLC通信总线（含接口设备和电缆）应1：1冗余配置，通信总线应符合国际标准，通信距离应满足装置实际要求。
LAM Inner Gate Assembly (Fully refurbished with order)
One (1) As-Is Variable Gap Drive for a LAM9600
Used CTI CryoTorr 8F, 8033295 w/ Gate Valve
DATA INSTRUMENTS DATA ACQUISITION SYSTEM, DI-500-16-P
White Knight AP200 Rebuild Kit RBAP200-1
SEIKO-SEIKI TURBO MOLECULAR PUMP STP-300H
Det-Tronics Dual Spectrum IR flame detector PM-5MPX
USHIO HB-251B/A-AF/HB-25103BY Lamp Housing & Controller
Allen-Bradley SLC 5/05 16K user memory KC-1747-L551
FALA Industries Centura HP Robot PM Kit H22589
HUBER UNIPUMP II, NEW IN BOX
