描述
PLC的通信包括PLC与PLC、PLC与上位计算机、PLC与其它智能设备之间的通信，PLC系统与通用计算机可直接或通过通信处理单元、通信转换单元相连构成网络，以实现信息的交换，并可构成“集中管理、分散控制”的多级分布式控制系统，满足工厂自动化（FA）系统发展的需要。
Nortel Norstar CICS Phone System Meridian T7316E
Nortel 8301AC 1140/1770 Watt Power Supply DS1405A14-E5
73P9057- BladeCenter Nortel layer 2-7 Gigabit Ethernet
New! Nortel Norstar VoIP Gateway – NT9B10AAAA
Nortel Networks OC-48 Multiplexer NTN440EA
Nortel Networks 32 Mailbox Upgrade
Nortel Business communications manager NT7B10AABB
Nortel MICS Startalk Flash Business Phone System M7310
Nortel Business Voice Mail 10-Used Office Phone System
Nortel Gigabit Ethernet Switch 5520-24T-PWR – AL1001A06
Nortel Shasta 5000 Control Management Card NTJT22DA
