Description
最有特点的是能与上位(即人机界面)通讯组成一个系统,每一块表可以与现场总线相连,I/O可以根据需要扩展,它内部的算法预先用程序作成功能块的形式,存在ROM中。可以按照所要求的控制策略,进行组态(不是编程)。如美国MOORE公司的353产品有80多块功能块,通过组态路图实现控制组态,用MODBUS与人机界面相连,人机界面的监控软件既可以用IFIX、也可以用INTOUCH。因为这两种软件都有这种可编程序调节器的驱动软件。国产监控软件只要有这种可编程序调节器的驱动软件,同样可以作为这种系统的监控软件。否则连不上去。353本身只有4个AI,2个AO,也就是能完成2个PID回路的控制。如果要增加控制回路,就要采用现场总线,因为它有LONWORKS的接口,可以把LONWORKS的模块连到该总线上。在组成系统时,要进行软件捆绑。为了数据安全,在表和总线之间加光电转换器。
Juniper IDP-1100C Intrusion Detection App NS-IDP-1100C
90 Day Warranty – Free Shipping!
Alcatel OS7800 OmniSwitch 7800 OS7-ENI-C24 AC
90 Day Warranty – Free Shipping!
Juniper PB-4GE-TYPE1-SFP-IQ2 4-port Gig Ethernet IQ PIC
90 Day Hardware Warranty – Free Shipping!
Laurel ECI ST50 Service Edge Router OC3 GigE SFP B-RAS
90 Day Hardware Warranty – Free Shipping!
NEW IBM Proventia Net Intrusion Prevention Sys GX5108
90 Day Warranty – Free Overnight Shipping!
Motorola BSR64000 EuroDOCSIS 2.0 Redundant 2×8 LC
90 Day Hardware Warranty – Free Shipping!
Juniper M7iBASE-AC-2FE M7i Router RE-850 M7i CFEB Serv
Free Ground Shipping – 90 Day Warranty
c
Spirent Smartbits SMB-6000B Chas 2x LAN-3101A LAN-3201B
90 Day Warranty – Free Shipping!
Juniper NS-ISG-1000-DC Firewall Advanced Gateway
90 Day Warranty – Free Shipping!
Extreme Networks Black Diamond 6808 MSM-3 G24T3 Switch
90 Day Warranty – We Accept Corporate PO’s
Enlarge
Qty2 Cisco ESR-HH-1GE w/ ESR-HH-CARRIER Set – ESR10008
90 Day Hardware Warranty – Free Shipping!
Cisco 8OC3X/POS-IR-LC-B 8-prt OC3/POS IR Eng3 GSR12000
90 Day Hardware Warranty – Free Shipping!