CPS-25N
日期：2019-7-20问：西门子plc如 s7200 s7300 s7400 还有新出的s71200。请问各位高手在实际应用中选择这些plc的主要标准是什么？
答： 在PLC系统设计时，首先应确定控制方案，下一步工作就是PLC工程设计选型。工艺流程的特点和应用要求是设计选型的主要依据。PLC及有关设备应是集成的、标准的，按照易于与工业控制系统形成一个整体，易于扩充其功能的原则选型所选用PLC应是在相关工业领域有投运业绩、成熟可靠的系统，PLC的系统硬件、软件配置及功能应与装置规模和控制要求相适应。熟悉可编程序控制器、功能表图及有关的编程语言有利于缩短编程时间，因此，工程设计选型和估算时，应详细分析工艺过程的特点、控制要求，明确控制任务和范围确定所需的操作和动作，然后根据控制要求，估算输入输出点数、所需存储器容量、确定PLC的功能、外部设备特性等，最后选择有较高性能价格比的PLC和设计相应的控制系统。
一、输入输出（I/O）点数的估算
I/O点数估算时应考虑适当的余量，通常根据统计的输入输出点数，再增加10%～20%的可扩展余量后，作为输入输出点数估算数据。实际订货时，还需根据制造厂商PLC的产品特点，对输入输出点数进行圆整。
二、存储器容量的估算
存储器容量是可编程序控制器本身能提供的硬件存储单元大小，程序容量是存储器中用户应用项目使用的存储单元的大小，因此程序容量小于存储器容量。设计阶段，由于用户应用程序还未编制，因此，程序容量在设计阶段是未知的，需在程序调试之后才知道。为了设计选型时能对程序容量有一定估算，通常采用存储器容量的估算来替代。
存储器内存容量的估算没有固定的公式，许多文献资料中给出了不同公式，大体上都是按数字量I/O点数的10～15倍，加上模拟I/O点数的100倍，以此数为内存的总字数（16位为一个字），另外再按此数的25%考虑余量。
三、控制功能的选择
该选择包括运算功能、控制功能、通信功能、编程功能、诊断功能和处理速度等特性的选择。
(一)运算功能
简单PLC的运算功能包括逻辑运算、计时和计数功能；普通PLC的运算功能还包括数据移位、比较等运算功能；较复杂运算功能有代数运算、数据传送等；大型PLC中还有模拟量的PID运算和其他高级运算功能。随着开放系统的出现，目前在PLC中都已具有通信功能，有些产品具有与下位机的通信，有些产品具有与同位机或上位机的通信，有些产品还具有与工厂或企业网进行数据通信的功能。设计选型时应从实际应用的要求出发，合理选用所需的运算功能。大多数应用场合，只需要逻辑运算和计时计数功能，有些应用需要数据传送和比较，当用于模拟量检测和控制时，才使用代数运算，数值转换和PID运算等。要显示数据时需要译码和编码等运算。
(二)控制功能
控制功能包括PID控制运算、前馈补偿控制运算、比值控制运算等，应根据控制要求确定。PLC主要用于顺序逻辑控制，因此，大多数场合常采用单回路或多回路控制器解决模拟量的控制，有时也采用专用的智能输入输出单元完成所需的控制功能，提高PLC的处理速度和节省存储器容量。例如采用PID控制单元、高速计数器、带速度补偿的模拟单元、ASC码转换单元等。
(三)通信功能
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。
PLC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%。PLC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PLC为从站，组成简易PLC网络；2）1台PLC为主站，其他同型号PLC为从站，构成主从式PLC网络；3）PLC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PLC网络（各厂商的专用PLC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、工业以太网）通信处理器。
(四)编程功能
离线编程方式：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。
五种标准化编程语言：顺序功能图（SFC）、梯形图（LD）、功能模块图（FBD）三种图形化语言和语句表（IL）、结构文本（ST）两种文本语言。选用的编程语言应遵守其标准（IEC6113123），同时，还应支持多种语言编程形式，如C，Basic等，以满足特殊控制场合的控制要求。
(五)诊断功能
PLC的诊断功能包括硬件和软件的诊断。硬件诊断通过硬件的逻辑判断确定硬件的故障位置，软件诊断分内诊断和外诊断。通过软件对PLC内部的性能和功能进行诊断是内诊断，通过软件对PLC的CPU与外部输入输出等部件信息交换功能进行诊断是外诊断。
PLC的诊断功能的强弱，直接影响对操作和维护人员技术能力的要求，并影响平均维修时间。
(六)处理速度
PLC采用扫描方式工作。从实时性要求来看，处理速度应越快越好，如果信号持续时间小于扫描时间，则PLC将扫描不到该信号，造成信号数据的丢失。
处理速度与用户程序的长度、CPU处理速度、软件质量等有关。目前，PLC接点的响应快、速度高，每条二进制指令执行时间约0.2～0.4Ls，因此能适应控制要求高、相应要求快的应用需要。扫描周期（处理器扫描周期）应满足：小型PLC的扫描时间不大于0.5ms/K；大中型PLC的扫描时间不大于0.2ms/K。 四、机型的选择
(一)PLC的类型
PLC按结构分为整体型和模块型两类，按应用环境分为现场安装和控制室安装两类；按CPU字长分为1位、4位、8位、16位、32位、64位等。从应用角度出发，通常可按控制功能或输入输出点数选型。
整体型PLC的I/O点数固定，因此用户选择的余地较小，用于小型控制系统；模块型PLC提供多种I/O卡件或插卡，因此用户可较合理地选择和配置控制系统的I/O点数，功能扩展方便灵活，一般用于大中型控制系统。
(二)输入输出模块的选择
输入输出模块的选择应考虑与应用要求的统一。例如对输入模块，应考虑信号电平、信号传输距离、信号隔离、信号供电方式等应用要求。对输出模块，应考虑选用的输出模块类型，通常继电器输出模块具有价格低、使用电压范围广、寿命短、响应时间较长等特点；可控硅输出模块适用于开关频繁，电感性低功率因数负荷场合，但价格较贵，过载能力较差。输出模块还有直流输出、交流输出和模拟量输出等，与应用要求应一致。
可根据应用要求，合理选用智能型输入输出模块，以便提高控制水平和降低应用成本。
考虑是否需要扩展机架或远程I/O机架等。
(三)电源的选择
PLC的供电电源，除了引进设备时同时引进PLC应根据产品说明书要求设计和选用外，一般PLC的供电电源应设计选用220VAC电源，与国内电网电压一致。重要的应用场合，应采用不间断电源或稳压电源供电。
如果PLC本身带有可使用电源时，应核对提供的电流是否满足应用要求，否则应设计外接供电电源。为防止外部高压电源因误操作而引入PLC，对输入和输出信号的隔离是必要的，有时也可采用简单的二极管或熔丝管隔离。
(四)存储器的选择
由于计算机集成芯片技术的发展，存储器的价格已下降，因此，为保证应用项目的正常投运，一般要求PLC的存储器容量，按256个I/O点至少选8K存储器选择。需要复杂控制功能时，应选择容量更大，档次更高的存储器。
(五)冗余功能的选择
1．控制单元的冗余
(1)重要的过程单元：CPU（包括存储器）及电源均应1B1冗余。
(2)在需要时也可选用PLC硬件与热备软件构成的热备冗余系统、2重化或3重化冗余容错系统等。
2．I/O接口单元的冗余
(1)控制回路的多点I/O卡应冗余配置。
(2)重要检测点的多点I/O卡可冗余配置。3）根据需要对重要的I/O信号，可选用2重化或3重化的I/O接口单元。
(六)经济性的考虑
选择PLC时，应考虑性能价格比。考虑经济性时，应同时考虑应用的可扩展性、可操作性、投入产出比等因素，进行比较和兼顾，最终选出较满意的产品。
输入输出点数对价格有直接影响。每增加一块输入输出卡件就需增加一定的费用。当点数增加到某一数值后，相应的存储器容量、机架、母板等也要相应增加，因此，点数的增加对CPU选用、存储器容量、控制功能范围等选择都有影响。在估算和选用时应充分考虑，使整个控制系统有较合理的性能价格比。
然后再根据西门子PLC的技术规格选型就可以了。
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Cisco Systems ASA5525-K8
Cisco Systems N7K-C7010-FAB-2
NEW Sealed Cisco PWR-C45-4200ACV Cisco Catalyst 4500 Series 4200 WACV Power
Cisco WS-X6716-10G-3CXL Cisco Catalyst 6500 16-Port 10 Gigabit Ethernet Module
Cisco UCSB-B200-M3 224GB, 2x Intel 2.60GHz E5-2630v2/80W, MLOM-40G-01
Cisco Systems WS-X6848-SFP-2T
CISCO 4-Degree Mesh Patch Panel 15454-PP-MESH-4 2RU 3YR WNTY
3rd Party CON-SNTP-7613SRS1 / 24X7X4 for Cisco 7613S Chassis,, 1 year
3rd Party CON-SNTP-7613SSUL / 24X7X4 for Cisco 7613S Chassis,, 1 year
Cisco Systems WS-C3850-48P-L incl 19% VAT // 2 years IT4Trade warranty
NEW Cisco WS-C3650-48FQ-S 48 10/100/1000 Ethernet PoE+ and 4x10G Uplink ports
New CISCO L-ASA-SSL-750-1K | incl 19% VAT | 2 years Cybertrading warranty
New CISCO ASA-SSL-750-1000 | incl 19% VAT | 2 years Cybertrading warranty
CISCO - N3K-C3524P-10GX - Nexus 3524x, 24 10G Ports
Brand NEW Cisco C1-C4500X-16SFP+ ONE Catalyst 4500-X 16 Port 10G IP Base Switch
NEW CISCO WS-X45-SUP7-E Cisco Catalyst 4500E Series Supervisor
Cisco Systems WS-C4510R+E
NEW SEALED Cisco C1-C4500X-16SFP+ ONE Catalyst 4500-X Switch - 16 x 10 Gigabit
!BRAND NEW IN BOX ! CISCO N7K-M132XP-12 32 Port 10Gb Ethernet Module !SHIP FAST!
Cisco WS-C6509-E 2x VS-S720-10G-3C 7x WS-X6748-GE-TX
Cisco ACE30-MOD-K9 Application Control Engine 1YearWarranty 2+Available
Cisco ASA5520-DC-K8 Security appliance 10Mb LAN 100Mb 1YearWarranty 2+Available
Cisco AS535XM-4E1-120-D Gateway1YearWarranty 2+Available
Cisco UCSB-B200-M3 w/ 8x 8GB DDR3 Memory, 2.70 GHz E5 CPU and 40G Mezzanine
NEW SEALED Cisco WS-C3750E-24TD-SD Catalyst Switch 1YrWrnty 2+Available
*NEW* WS-X45-SUP7-E Catalyst 4500 E-Series Supervisor, 848Gbps
WS-C4948-S Cisco Catalyst 4948 48 Port Switch
*Brand NEW* CISCO WS-C3750X-48P-S 48 10/100/1000 Ethernet PoE+ Switch
NEW Cisco N3K-C3524P-10GX Nexus 3524x Layer 3 Switch 24 10G Ports N3KC3524P10GX
New Cisco Systems L-ASA-UC-100 | incl 19% VAT | 2 years Cybertrading warranty
New CISCO SPA-8XCHT1/E1-V2 | incl 19% VAT | 2 years Cybertrading warranty
NEW Sealed Cisco WS-X4712-SFP+E Catalyst 4500E Series 12Port 10 Gigabit Ethernet
New Cisco Systems RSP720-3C-GE | incl 19% VAT | 2 years Cybertrading warranty
Cisco WS-C3750X-24P-E 24 Port PoE+ GB + 2x C3KX-PWR-715WAC C3KX-NM-1G Modul
3rd Party CON-SNTP-760S10BR / 24X7X4 for Cisco 7609S Chassis,, 1 year
NEW IN BOX Cisco WS-C3850-24XU-L 24 Port UPOE MGIG, 1100W, LAN BASE ! SHIP FAST
*New Sealed* Cisco WS-C3650-48PD-E 48 10/100/1000 Ethernet PoE+ w/ 640WAC power
Cisco Catalyst 3750V2-48PS - Switch - L3
Cisco Systems WS-C4510R+E
CISCO3925E/K9 Cisco 3925 Router with 4 onboard GE w/ VWIC2-1MFT-G703 Module
NEW Cisco WS-C3650-48PD-E 48 10/100/1000 Ethernet PoE+ Switch w/ 640WAC power
Cisco Systems N7K-M132XP-12L | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems SPA-2CHT3-CE-ATM
#NEW# Cisco WS-C3650-48PD-E 48 Port PoE+ Switch #FAST SHIPMENT#
Cisco Systems ISR4351/K9
Cisco Systems SPA-8XCHT1/E1-V2
New Cisco Systems NAC3315-SVR | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems AS53-96DMM-RPS-CH
NEW Cisco ASA5525-K9 ASA 5525-X Firewall Edition Network Security/Firewall
Cisco Systems SPA-5X1GE-V2
Cisco Systems WS-C3560X-48PF-E incl 19% VAT // 2 years IT4Trade warranty
Cisco Systems WS-C4507RES6L-96V+ incl 19% VAT // 2 years IT4Trade warranty
Cisco Systems WS-C4506E-S7L+96 incl 19% VAT // 2 years IT4Trade warranty
Cisco AS5350XM AS535XM-2E1-60-V AS535-DFC-2CE1, AS535-DFC-60NP
Cisco CMTS UBR7246VXR Cable Router NPE-G2 2 ea MC28U dual AC 2gb RAM
Cisco CMTS UBR7246VXR Cable Router NPE-G2 2 ea MC28U dual DC 2gb RAM
FLSA1-2X-5-10G= Cisco Upgrade from 5 Gbps to 10Gbps License - license
Cisco UCSB-B200-M3 64GB, 2x Intel E5-2620/95W, 2x 500GB 6Gb SATA
NEW SEALED CISCO CTS-SX20PHD2.5X-K9 Video conferencing kit 1YearWrnty 2+Avalable
Cisco ASA5525-K7 Security appliance 1YearWarranty 2+Available
Cisco UCSB-B200-M3 128GB, Intel 2.60 GHz E5-2630 v2/80W, 600GB 6Gb SAS 10K RPM
NEW IN BOX CISCO WS-C3850-24XU-L CATALYST SWITCH 24PORT UPOE MGIG **SHIP FAST**
Cisco UCSB-B200-M3 96GB, 2x Intel E5-2643, MLOM-40G-01
Cisco WS-X6904-40G-2T Catalyst 6900 Series 4-Port 40 Gigabit Ethernet Fi
*** NEW Cisco WS-C3850-48T-E 48 10/100/1000 Ethernet ports, with 350WAC NEW
CISCO 15454-ML-MR-10 ML2 10-pt Multi-rate L2/RPR Card
CISCO 1 Port OC-192 XFP Module 15454-10G-S1 3YR WNTY
CISCO UCS-FI-6296UP UCS 96 Port Fabric Interconnect Switch w/ Rails,Pwr Cable z5
Cisco MGX-AXSM-8-622-XG AXSM-8-OC12/XG 8 PORT OC12C STM4 ATM SWITCH SERVICE MOD
NEW Sealed Cisco PA-MC-STM-1SMI 1 port multichannel STM-1 single mode port adapt
Cisco Systems AS53-T1-216DMM
NEW Cisco SG200-50FP 50-port Gigabit Full-PoE Smart Switch
NEW IN BOX Cisco Catalyst WS-C3650-48FWD-S 3650 48 FPoE Port 2x10G Uplink Switch
SMARTnet Eligible Cisco Nexus 5596UP 48 Fixed 10GE Ports 1RU N5K-C5596UP-FA
New Sealed Cisco3945/K9
Cisco NEW N2K-C2232TF-10GE Nexus 2232TP 10GBASE-T Fabric Extender + 16 FET-10G
*New In Box* Cisco WS-C3650-48PQ-S Switch - L3 - managed - 48 Port * Fast Ship *
#NEW# Cisco WS-C3850-24XU-L 24 Port Catalyst Switch #FAST SHIPMENT#
~NEW SEALED~ CISCO N2K-C2248PQ Fabric Extender ~FAST DELIVERY~
New Cisco Systems WS-C2960XR-48FPS-I incl 19% VAT // 2 years IT4Trade warranty
New Cisco Systems WAVE-574-DMS | incl 19% VAT | 2 years Cybertrading warranty
New CISCO MCS-7825-H2-CCX1 | incl 19% VAT | 2 years Cybertrading warranty
New CISCO MCS-7825-H2-ECS1 | incl 19% VAT | 2 years Cybertrading warranty
New CISCO MCS-7825-H2-IPC1 | incl 19% VAT | 2 years Cybertrading warranty
New Cisco Systems MCS-7825-H2-RC1 | incl 19% VAT | 2 years Cybertrading warranty
New CISCO MCS-7825-H3-CCE1 | incl 19% VAT | 2 years Cybertrading warranty
New CISCO MCS-7825-H3-ECS1 | incl 19% VAT | 2 years Cybertrading warranty
New CISCO MCS-7825-H2-CCE1 | incl 19% VAT | 2 years Cybertrading warranty
New CISCO MCS-7825-H2-IPC2 | incl 19% VAT | 2 years Cybertrading warranty
Cisco Nexus 5500 Unified Module 16 Port 10GE N55-M16UP
3rd Party CON-SNT-7613RSCR 8X5XNBD for Cisco 7613 Chassis,1, 1 year
3rd Party CON-SNT-7613RSCR / 8X5XNBD for Cisco 7613 Chassis,1, 1 year
New CISCO MCS7825H3-K9-CMB1 | incl 19% VAT | 2 years Cybertrading warranty
~NEW SEALED~ CISCO VS-S720-10G-3CXL Supervisor Engine ~FAST DELIVERY~
New Cisco Systems N2K-C2248TF-E incl 19% VAT // 2 years IT4Trade warranty
CISCO WS-C6509-E w/ Fan, Dual PWR-4000-DC 1x WS-X6708-10G-3CXL,2x WS-SUP720-3BXL
*New In Box* 2x Cisco WS-C3850-24P-S Switch * Ship Fast *
NEW IN BOX CISCO RSP720-3CXL-GE 1 YEAR WARRANTY ROUTE SWITCH PROCESSOR 720GBPS
NEW Cisco WS-C3650-48FD-L Catalyst 3650-48F Ethernet Switch 48 Port Full PoE
Cisco Systems ISR4351/K9 | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems 4-10GBE-WL-XFP
CISCO N3K-C3524P-10GX | incl 19% VAT | 2 years Cybertrading warranty
~NEW SEALED~ Cisco WS-C3650-48PQ-S 48 Port PoE+ Switch ~FAST DELIVERY~
CISCO CATALYST 3650 24 PORT DATA 4X1G UPLINK IP SERVICES IN
!NEW IN BOX! Cisco WS-C3650-48FS-E 48 port PoE+ 4x1G 1025W ! FAST SHIPMENT !
BRAND NEW IN BOX Cisco ASA5525-IPS-K9 Firewall Security Appliance ! FAST SHIP !
Cisco Systems NAC3315-SVR
Cisco Systems WS-C4507R+E
Cisco Systems WS-C4507R-E
#NEW# Cisco WS-C3650-48FS-E 48 Port PoE+ Switch #FAST SHIPMENT#
*New In Box* Cisco N3K-C3524P-10GX Switch * Fast Shipment *
Cisco Systems ISR4351/K9 | incl 19% VAT | 2 years Cybertrading warranty
New CISCO SPA-8XCHT1/E1-V2 | incl 19% VAT | 2 years Cybertrading warranty
CISCO - WS-X4448-GB-SFP= - Catalyst 4500 48-Port 1000Base-X (SFPs Optional)
New Cisco Systems WAVE-574-DMS | incl 19% VAT | 2 years Cybertrading warranty
Cisco AS54HPX-16E1-480AC 16E1, 492 ports AC RPS 512MB DRAM
CISCO 7600-ES+2TG3CXL 7600 ES+ Line Card 1YearWarranty 2+Available
NEW Cisco WS-C3850-48P-S 48 10/100/1000 Ethernet PoE+ ports 715W AC Power
New open* Cisco N2K-C2232TF-10GE NEXUS 2000 10GBASE-T Extender w/ dual AC PS
Cisco ASR1002 chassis,4 built-in GE, Dual P/ S,4GB DRAM 1 YEAR WARRANTY
**NEW SEALED** Cisco WS-X4640-CSFP-E 40 SFP/80 C-SFP ports **Ship FAST**
NEW IN BOX Cisco Nexus N3K-C3524P-10GX L3 Managed 3524x Switch, 24 SFP+ Ports
New Sealed Cisco ISR4431/K9 ISR 4431 Router with 4 onboard GE
*New SEALED* Nexus Cisco N3K-C3524P-10GX Nexus 3524x Switch, 24 SFP+
Cisco UBR7225VXR Broadband CMTS Router w/ Dual AC Power
NEW IN BOX CISCO ASA5525-IPS-K9 ASA5525-X IPS Edition Firewall **SHIP FAST**
**NEW SEALED** Cisco WS-X4712-SFP+E Line Card 4500-E 12 Ports 10G (SFP+) CARD
3rd Party CON-SNT-7604RCXR 8X5XNBD for Cisco 7604 Chassis,4, 1 year
Cisco Systems WS-C3850-48U-L
Cisco Systems ASA5525-SSD120-K8
Cisco Systems ASA5525-SSD120-K9
Cisco Systems 4-10GBE-WL-XFP
Cisco Systems ASA-UC-100
CISCO N3K-C3524P-10GX | incl 19% VAT | 2 years Cybertrading warranty
*Brand NEW* CISCO PA-MC-STM-1SMI 1 port multichannel STM-1 single mode adapter
New Cisco Systems WS-C3650-48PS-S incl 19% VAT // 2 years IT4Trade warranty
Cisco Systems WS-C3850-48T-L incl 19% VAT // 2 years IT4Trade warranty
!BRAND NEW IN BOX! WS-X4712-SFP+E Cisco Catalyst 4500 E-Series 10GBE SFP+ MODULE
Cisco UCS-B200-M3 V10 B200 M3 Blade Server 2 x E5-2650 V2 256Gb RAM 10Gb VIC
CISCO U7246VXR-ONE28UG1 | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems UBR7200-NPE-G1
Cisco Systems WS-C4507R-E
New CISCO WS-C3560X-48PF-E | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems MCS-7825-H2-S31
Cisco Systems MCS-7825-H2-UC1
New Cisco Systems N2K-C2224TF-1GE | incl 19% VAT | 2 years Cybertrading warranty
New Cisco Systems N2K-C2248TF | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems ASA5510-AIP10SP-K8
Cisco Systems MCS-7825-H1-ECS1
Cisco Systems MCS-7825-H1-UC1
Cisco Systems MCS7825H2-K9-CMA2
Cisco Systems MCS-7825-H3-CCX1
Cisco Systems MCS-7825-H3-IPC1
Cisco Systems MCS7825H3-K9-CMA2
Cisco Systems MCS7825H3-K9-CMB2
Cisco Systems MCS7825H3-K9-CMC1
Cisco Systems MCS-7825H3-K9-UCA1
Cisco Systems MCS-7825-H3-S31
Cisco Systems MCS-7825-H3-UC1
New CISCO ASA5510-AIP10SP-K9 | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems CRS-16-FANTRAY | incl 19% VAT | 2 years Cybertrading warranty
NEW Sealed Genuine Cisco WS-X45-SUP8-E 4500E Supervisor Engine 8-E w/Convergence
NEW Sealed Cisco PA-MC-STM-1SMI One Port Multichannel STM-1 PA Adapter
NEW SEALED Cisco N7K-M148GT-11L Nexus 7000 M1-Series 48-Port Gigabit Ethernet
**New FACTORY Sealed** Cisco ASA5525-IPS-K9 Cisco ASA 5525-X IPS Edition
*NEW Sealed* CISCO WS-C3650-48PQ-S 48 10/100/1000 Ethernet PoE+ and 4x10G Uplink
3rd Party CON-SNT-6S7C10GR 8X5XNBD for Cisco 7606S Chassis, 1 year
Cisco Systems 4-10GBE-WL-XFP | incl 19% VAT | 2 years Cybertrading warranty
CISCO N3K-C3524P-10GX | incl 19% VAT | 2 years Cybertrading warranty
New Cisco Systems L-ASA-UC-100 | incl 19% VAT | 2 years Cybertrading warranty
CISCO WS-X6148-FE-SFP Catalyst 6500 48-port 100BASE-X Classic Interface Module
CTI-8321-GWISDNK9 Cisco TelePresence ISDN GW MSE 8321
CISCO 12404 GSR4/80-AC 4-Slot Chassis router 2xAC Power CSF Card Route Processor
Cisco Systems ACE30-MOD-K9
NEW IN BOX CISCO VS-S720-10G-3CXL S720 SUPERVISOR ENGINE **SHIP FAST**
Cisco Systems WS-X6708-10G-3CXL incl 19% VAT // 2 years IT4Trade warranty
CISCO MWR-1941-DC-8T1/E1 | incl 19% VAT | 2 years Cybertrading warranty
New Cisco Systems CHAS-UBR7225VXR | incl 19% VAT | 2 years Cybertrading warranty
Cisco UCS 5108 Chassis with 4x B200 M2 with 2xXeon X5650/16 gb/1 x146 gb sas 10K
NEW IN BOX CISCO WS-X4712-SFP+E X4712 4500E CATALYST SWITCH MODULE **SHIP FAST**
Cisco WS-C3750X-48P-L 3750X 48x 10/100/1000 PoE ETH PTS w/ 715W AC PSU
HP C7000 W/ 16x BL460C G6 BLADE 2x CISCO 3020 2x L5520 96GB 2x 73GB 10K RAILS
HP C7000 W/ 16x BL460C G6 BLADE 2x CISCO 3020 2x E5540 96GB 2x 73GB 10K RAILS
New Cisco Systems WS-X6824-SFP-2T | incl 19% VAT | 2 years Cybertrading warranty
Cisco AS5350XM AS535XM-2E1-V-HC with AS535-DFC-2CE1, AS5X-FC, 3x AS5X-PVDM2-64
*New In Box* Cisco WS-X6748-SFP 48-port GigE Mod: fabric-enable *Fast Shipment*
New Cisco A9K-SIP-700 I-Flex SPA Interface Processor ASR9000 Router 68-3197 AK
NEW Sealed Cisco WS-C3850-48PW-S Cisco Catalyst 3850 48-port PoE IP Base Switch
*NEW SEALED FAST SHIP* WS-X45-SUP8-E ( with 2 Years Wnty)
Cisco MEM-CC-WAN-512M - Two 512 MB Memory modules Enhanced FlexWAN Bays
Cisco 14X10GBE-WL-XFP CRS-3 14-port 10GbE LAN/WAN-PHY Interface Module KAJ
NEW CISCO WS-C3750X-12S-E Catalyst 3750X 12 Port GE SFP SFP IP Services
NEW WS-X45-SUP6-E CISCO CATALYST 4500 E-SERIES SUP 6-E
CISCO CISCO3845-AA/K9 INCLUDED AIM-COMPR4 Mem/Flash Upgrade Avail.
Cisco Systems A903-RSP1A-55 | incl 19% VAT | 2 years Cybertrading warranty
NEW Cisco ASA5525-IPS-K9 ASA 5525-X with IPS, SW, 8GE Data, 1GE Mgmt, AC Power
*Brand NEW* CISCO WS-C3850-24T-E 24 ports w/ 350WAC Power, C3850-NM-2-10G Module
*NEW SEALED* WS-C3850-48P-S 48 10/100/1000 ports Switch + C3850-NM-2-10G Module
NEW Sealed Cisco N7K-M108X2-12L Nexus 7000 M1-Series 8-Port 10 Gigabit Module
Cisco Nexus N5K-C5548P-FA 5548P 1RU Chassis 32 Fixed 10GE Ports
NEW SEALED CISCO WS-X4712-SFP+E Catalyst 4500 E-Series 10GBE SFP+ MODULE
Cisco ASR1006 w/ Dual AC Power
CISCO Nexus 3064 Switch N3K-C3064PQ-10GX 3YR WNTY
#NEW# Cisco ASA5525-IPS-K9 ASA 5525-X Router #FAST SHIPMENT#
NEW Sealed DS-X9232-256K9 MDS 9000 32 Port Fibre Channel Switching Module NIB
*New Sealed*Cisco WS-X4640-CSFP-E Catalyst 4500 40 SFP/80 C-SFP ports 1000BaseX
New Cisco Systems CHAS-UBR7225VXR | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems AS53-96-RPS-CH
3rd Party CON-SNT-7606SSUP 8X5XNBD for Cisco 7606S Chassis, 1 year
CISCO ME 3600X 24CX Switch ME-3600X-24CX-M
Cisco 76-ES+T-2TG 7600 ES Plus Transport, LAN/WAN PHY, OTN/G.709, 2x10GE Card
Cisco WS-C6504-E Bundle w/ 2x VS-S720-10G-3C,2x PWR-2700-AC/4, Fan Tray included
*Brand NEW* CISCO WS-C3850-48F-L 48 Port Switch + C3850-NM-2-10G Module
Cisco A9K-8T-L 8-Port 10GE Low Queue Line Card
New Cisco Systems WS-C3750E-48PD-E incl 19% VAT // 2 years IT4Trade warranty
New Cisco Systems N2K-C2232PF-10GE incl 19% VAT // 2 years IT4Trade warranty
New Cisco Systems N2K-C2248TF-1GE incl 19% VAT // 2 years IT4Trade warranty
*New sealed& Neu OVP* CISCO ASR1000-ESP10 2Years Wnty/VATfree €4000
Cisco Systems WS-C3560E-12D-S incl 19% VAT // 2 years IT4Trade warranty
Cisco Systems WS-C3750X-12S-E incl 19% VAT // 2 years IT4Trade warranty
New Cisco Systems ASA5540-BUN-K9 incl 19% VAT // 2 years IT4Trade warranty
Cisco Systems ASA5580-20-BUN-K8 incl 19% VAT // 2 years IT4Trade warranty
CISCO - ASA5525-FPWR-K9 - ASA 5525-X with FirePOWER Services, 8GE, AC, 3DES/AES
*NEW SEALED* CISCO WS-C3850-12XS-S 2 Years Warranty/VATfree 4000€ 3850
Cisco Systems WS-C3850-12S-S incl 19% VAT // 2 years IT4Trade warranty
CISCO VS-C6506E-S720-10G | incl 19% VAT | 2 years Cybertrading warranty
New Cisco Systems WS-X4448-GB-SFP | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems SPA-8X1GE
Cisco Systems FL-CUBEE-100
Cisco Systems L-FL-CUBEE-100
Cisco N2K-C2232TF-10GE Cisco Nexus 2232TP Series 10GBASE-T Fabric Extender
New CISCO WS-C3750X-48PF-S | incl 19% VAT | 2 years Cybertrading warranty
NEW Sealed Cisco WS-C3650-48PQ-S 48 10/100/1000 Ethernet PoE+ Switch
Cisco ASR1000-RP2 second-generation ASR 1000 1 YEAR WARRANTY
NEW CISCO N55-48P-SSK9 Nexus 5500 Storage License **E-DELIVERY**
CISCO C3925-CME-SRST/K9 - Voice Bundle w/ PVDM3-64 1GB/256F CISCO3925 - 3 YR War
NEW Cisco DS-X9232-256K9 1 YEAR Warranty NEW MDS 32-Port 8-Gbps Advanced Fibre C
*New* Cisco WS-C3750X-48PF-E 48-Port Gigabit POE
Guaranteed SMARTnet Eligible Cisco Catalyst WS-C4500X-16SFP+ 10G IP Base Switch
NEW Cisco WS-C3850-24P-E 24 10/100/1000 Ethernet PoE+ ports, with 715WAC power
Cisco 15454-10G-S1 Fiber Module 1YearWarranty 2+Available
NEW SEALED Cisco Nexus N2K-C2248PQ Expansion Module 1YearWarranty 2+Available
Cisco Nexus N3K-C3548P-10G Managed Switch
NEW CISCO L-ASA5585-SEC-PL ASA 5585-X Security Plus License **E-DELIVERY**
NEW CISCO FLSA1-2X-5-10G Upgrade 5 Gbps to 10Gbps E-Delivery PAK for ASR1002-X
Cisco 14X10GBE-WL-XFP CRS-3 14-port 10GbE LAN/WAN-PHY Interface Module
CISCO ISR 4451-X ISR4451-X/K9 DUAL PWR-4450-AC IOS XE 15.4 IP BASE MINT
Cisco ESR10008 Slot Router W/ 2x ESR-PRE3 2x ESR-PWR-AC 1x ESR-BLOWER JWA
Cisco UCSB-B200-M3 6x 16GB DDR3, 2x E5-2620, 2x 500GB 6Gb SATA
Cisco 6504-E Chassis 4-Slot WS-C6504-E w/ Dual AC & VS-S720-10G-3CXL *Bundle*
Cisco 15454-40-MUX-C
#NEW# Cisco WS-C3650-48PQ-S 48 Port PoE+ Switch #FAST SHIPMENT#
Cisco Systems Cisco7201 | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems WS-C3750X-24U-S
Cisco Systems A9K-8T-L
*New In Box* Cisco N2K-C2348UPQ 10GE Fabric Extender **Fast Shipment **
Cisco UCSC-C240-M3S dual P/S 4x 500GB 6Gb SATA, 2x Xeon E5-2609, 160GB (16GB)
*New* Cisco WS-C3650-48FWD-S Catalyst 3650 48 Port Fpoe 2X10G Uplink
*Good Condition* Juniper DPCE-R-20GE-2XGE 1 GE DPC PRNCD MX9 * Fast Shipment *
CISCO 7609S-S32-8G-B-P | incl 19% VAT | 2 years Cybertrading warranty
CISCO 7609S-SUP720B-P | incl 19% VAT | 2 years Cybertrading warranty
CISCO C2951-S-SRE-WAE/K9 | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems C2951-UCSE/K9 | incl 19% VAT | 2 years Cybertrading warranty
CISCO C2951-WAASX-SEC/K9 | incl 19% VAT | 2 years Cybertrading warranty
Cisco Systems C3925-AX/K9 | incl 19% VAT | 2 years Cybertrading warranty
CISCO C3925-VSEC-PSRE/K9 | incl 19% VAT | 2 years Cybertrading warranty
CISCO WS-C4506E-S6L-96V+ | incl 19% VAT | 2 years Cybertrading warranty
CISCO 15454-192L-1-55.7 | incl 19% VAT | 2 years Cybertrading warranty
CISCO 4OC3X/POS-LR-LC-B | incl 19% VAT | 2 years Cybertrading warranty
Cisco AIR-CT5508-100-K9 WLAN Wireless Lan Controller + 25 AP Lic up to 125 AP
*New Sealed* Cisco WS-C3650-48TS-E 48 10/100/1000 Ethernet and 4x1G Uplink ports
*NEW Factory Sealed* CISCO WS-C3850-48U-L 48 Port Catalyst Switch C3850-NM-2-10G
NEW Sealed Cisco N2K-C2348UPQ Cisco Nexus 2348UPQ 10GE Fabric Extender
#NEW# Cisco WS-C3650-48TS-E 48 Port Catalyst Switch #FAST SHIPMENT#
CISCO 15454-192L-1-55.7 | incl 19% VAT | 2 years Cybertrading warranty
CISCO 4OC3X/POS-LR-LC-B | incl 19% VAT | 2 years Cybertrading warranty
NEW Cisco WS-C3850-24U-S Catalyst WS-C3850-24U Layer 3 Switch 3850 24 Port UPOE
New CISCO SPA-1XOC12-POS-V2 | incl 19% VAT | 2 years Cybertrading warranty
*NEW SEALED* CISCO WS-C3650-48PWD-S Catalyst 3650 48 Port PoE 2x10G Uplink
CISCO 4-10GE Cisco CRS-1 Series 4x10GE Interface Card
*NEW Factory Sealed* CISCO WS-C3850-48PW-S Catalyst Switch 3850
Cisco AIR-CT5508-50-K9 5500 Series Wireless Controller for up to 50 Cisco access
New Sealed Cisco WS-C3850-24U-E 24 10/100/1000 Ethernet UPOE ports Switch
NEW Cisco WS-C3850-48F-S 48 10/100/1000 Ethernet PoE+ port Switch 1100W AC power
Cisco Supervisor MSE 8050 CTI-8050-SUP-K9 w/ 256Mb CompactFlash
Cisco CISCO3925-E-V/K9 Integrated Services Router
CISCO ASA 5580-40 APPLIANCE - ASA5580-40-10GE-K9
CATALYST 2960S STACK 48GIGE PO Cisco WS-C2960S-48LPS-L
*** NEW Cisco WS-C3650-48FQ-S 48 POE+ GE, 4x10G, 1025W, IP base
New Sealed Cisco N3K-C3524P-10GX Nexus 3524x, 24 10G Ports Fast Shipping
NEW Cisco WS-C3650-48TD-S Catalyst WS-C3650-48TD Layer 3 Switch 3650 48 Port
New CISCO ASA-CSC20-250-1K | incl 19% VAT | 2 years Cybertrading warranty
Cisco WS-X45-SUP6-E= Supervisor card with CenterFlex technology
Cisco Systems SM-X-6X1G
New CISCO SPA-1XOC12-POS-V2 | incl 19% VAT | 2 years Cybertrading warranty
3rd Party CON-SNTP-A9KSP700 / 24X7X4 for Cisco ASR 9000 Series, 1 year
CISCO - WS-C3650-48PD-S - Catalyst 3650 48 Port, PoE 2x10G Uplink IP Base
CISCO - N2K-C2232TM-E-10GE - (32x1/10GT+8x10GE), airflow/power opt
CISCO - N2K-C2232TM-E - N2K-C2232TM-E-10GE (32x1/10GT+8x10GE), airflow/power opt
Cisco Systems WS-C3850-24P-E incl 19% VAT // 2 years IT4Trade warranty
New Cisco Systems WS-X4448-GB-SFP incl 19% VAT // 2 years IT4Trade warranty
*Neuware New Sealed* CISCO WS-C3750X-48P-E 2YearsWnty WnVATfree €3950
New Cisco Systems ASA5525-IPS-SSP | incl 19% VAT | 2 years Cybertrading warranty
L-ASA5585-SEC-PL= Cisco ASA 5585-X Security Plus - license
New Sealed CISCO Original SFP-10G-LR LOT of 16 Units
Cisco DCM-GBE-MK1 D9900/D9901 DCM GE Input/Output Board MKI
cisco WS-C4500X-16SFP+ factory sealed
10 Pcs. C2801-VSEC-SRST/K9 Cisco2801 VSEC Bundle Router w/PVDM2-8
Cisco AS535XM-2E1-60-D Universal Gateway AS5350XM 1YearWarranty 2+Available
NEW SEALED Cisco Meraki MX100-HW Firewall 250 VPN Users 1YearWaranty 2+Available
Cisco AS58-24CE1 Expansion module 1YearWarranty 2+Available
NEW SEALED Cisco WS-C4510R Switch 1YearWarranty 2+Available
CISCO WS-X6748-SFP= Catalyst 48-Port GigE Module
CISCO WS-X6716-10G-3CXL Catalyst 6500 16-Port 10 Gigabit Ethernet Module
*New In Box* Cisco WS-C3850-12XS-S Switch * Fast Shipment *
CISCO WS-C6504-E w/ Fan and Dual Power 1xWS-X6748-GE, 1x WS-X6724, 1x WS-SUP32
NEW Cisco WS-C3650-48FQ-S CAT3650 48-GE PoE+ 4-10G SFP+ 1025AC IPB
NEW Cisco Catalyst WS-C3750X-48P-L 48 Port Ethernet Switch with 370 Watt PoE