大中型可编程逻辑控制器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。
可编程逻辑控制器系统的通信接口应包括串行和并行通信接口、RIO通信口、常用DCS接口等;大中型可编程逻辑控制器通信总线(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。
可编程逻辑控制器系统的通信网络中,上级的网络通信速率应大于1Mbps,通信负荷不大于60%。可编程逻辑控制器系统的通信网络主要形式有下列几种形式:
1)、PC为主站,多台同型号可编程逻辑控制器为从站,组成简易可编程逻辑控制器网络;
2)、1台可编程逻辑控制器为主站,其他同型号可编程逻辑控制器为从站,构成主从式可编程逻辑控制器网络;
3)、可编程逻辑控制器网络通过特定网络接口连接到大型DCS中作为DCS的子网;
4)、专用可编程逻辑控制器网络(各厂商的专用可编程逻辑控制器通信网络)。
为减轻CPU通信任务,根据网络组成的实际需要,应选择具有不同通信功能的(如点对点、现场总线、)通信处理器。
Motorola MVME147
Motorola MVME147-SA-2
Motorola MVME167-34B
MOTOROLA MVME712M
Motorola MVME332XT
Motorola MVME165-03 VME CPU Board
Motorola MVME374 VME Module 6060-0003
MOTOROLA MVME147SRF MVME-147SRF
Motorola MVME340B 01-W3787B01B
Motorola MVME332XT
Motorola MVME167-34B
Motorola MVME187
MOTOROLA VME MODULE MVME177-005
Motorola MVME2600-2
Motorola MVME187-04A
MOTOROLA MVME1301 01-W3108F MPC603
Motorola MVME712-103 Transition
Motorola MVME121
Motorola MVME162-523
Motorola 01-W3914B MVME187
Motorola MVME162FX Controller MVME162-413
Motorola MVME162-242SE 16MB
Motorola MVME332XTP
Motorola MVME172-363 MVME172-363
Motorola MVME328-1
MOTOROLA MVME197LE 01-W3091F
MOTOROLA MVME334B VME BOARD 01-W3875B
MOTOROLA MVME197LE RS530
MOTOROLA MVME165A 68040
Motorola MVME333S-2
MOTOROLA MVME332XT
MOTOROLA MVME162-522A 01-W3960B MVME 162-522A
MOTOROLA MVME167-031A
Motorola MVME147-023
Motorola MVME236-2
Motorola MVME712M
Motorola MVME147S-1
Motorola MVME187-33A
Motorola MVME224A-1
MOTOROLA MVME334A VME BOARD 01-W3726B
MOTOROLA MVME712-M
Motorola MVME131
Motorola MVME147-022 01-W3964B
Motorola MVME712-102
Motorola MVME712-104
MOTOROLA MVME712-11
Motorola MVME333S-2
Motorola MVME350
MOTOROLA MVME162-013A 01-W3884B
Motorola MVME147
MVME333XT MVME333XT
Motorola MVME162-212
Motorola MVME605
Motorola MVME320
Motorola MVME320-A1
Motorola MVME400
MOTOROLA MVME147SA-2 32MHz SBC MVME147SA-2
Motorola MVME332XTS
Motorola MVME376 with MVME712-376
Motorola MVME-376
MOTOROLA MVME167-02A CPU 8M 01-W36908
Motorola MVME712-101 Transition
Motorola MVME147S-1
Motorola MVME-733F Module MVME733F
Motorola MVME130DOF
Motorola MVME162-223