R911271349 REXROTH

3HAC022165-002 ABB DAS
3HAC022193-001 ABB SCS(GA
3HAC022281-001 ABB
3HAC022311-001 ABB
3HAC022379-001 ABB DCS
3HAC022474-001 ABB

分类: 标签:

描述

PLC和编程器公用一个CPU,编程器在编程模式时,CPU只为编程器提供服务,不对现场设备进行控制。完成编程后,编程器切换到运行模式,CPU对现场设备进行控制,不能进行编程。离线编程方式可降低系统成本,但使用和调试不方便。在线编程方式:CPU和编程器有各自的CPU,主机CPU负责现场控制,并在一个扫描周期内与编程器进行数据交换,编程器把在线编制的程序或数据发送到主机,下一扫描周期,主机就根据新收到的程序运行。这种方式成本较高,但系统调试和操作方便,在大中型PLC中常采用。

Netapp FAS3020 w/Transferable Licenses CIFS ISCSI 25TB!

Netapp FAS3050C 6 Transferable Licenses with 24TB 10K!!

NetApp FAS3050C 6 Transferable Licenses 24TB 10K X274B

NetApp FAS3050C 6 Transferable Licenses 24TB 10K 144GB

NetApp FAS3050C 6 Transferable Licenses 24TB 10K X274B
NFS ISCSI Snap Restore SV-ontap-PRI Flexclone Cluster

NetApp FAS3050C Cluster NFS ISCI Snap Restore Flexclone

Netapp FAS3020 CIFS ISCSI 2x DS14MK2-AT X269A-R5 28TB!!

NETAPP FAS940c w/10x DS14MK2 14x 144GB 15K X275A-R5

NetApp FAS3020C 4 Transferable Licenses 24TB 10K X274B

NetApp FAS3020C NFS CIFS ISCI CLUSTER + More w/24TB FC