A-757039海南期货行情走势图怎么看
日期：2024-3-4问：我用的是EM222输出模块，我想输出220V到时中间继电器，Q0，1，2，3都用过了，现在我想用Q4，5，6，7输出，输出的时候灯是亮的，但就是没有电压，没法用呀，不知道是怎么回事，不会下面4个点是电流输出吧
答：em222有2种，继电器输出型和晶体管输出型。据说还将推出双向可控硅型。
继电器输出型需要提供继电器线圈的驱动电源，即 L+和 M，是DC24v的，试验的话，可以由cpu的L+和M 驱动。
从描述看，您没有提供这个电源。所以指示灯亮（内部5V逻辑），但触点没有吸合。
补充：
输出点分组的
1L qx.0 .1 .2 .3
2L qx.4 .5 .6 .7
您需要将220v的火线接到2L上， .4接负载，而负载另一端接220V的N线
问：cpu是314，只有一个MPI口，有一个343-1以太网模块，触摸屏是MP277，上位机2台。
打算几种组网方式：
1、以太网模块接交换机，mp277和所有的上位机都接到交换机上
2、以太网接交换机，工控机接交换机上。MP277和PLC通过MPI通讯
想请教一下，以上两种方案都可以实现吧，哪种好一些呢，哪种方式触摸屏通讯可靠快速啊！！
答：其实两种方法都非常好，另外就是考虑那种方案需要的线要长一些的问题了，不过建议mp277使用以太网进行通讯，因为网线哪里都可以买到而且还非常方便，即插即用，便于维护。
问：我们STEP7编程软件库里有一些如FC33 FC40 FC105，等等，但是我们使用时是不是要注意先看看库里有没有这个号，如果有，证明这个块号如33 40 105不可以使用，如果这样子的话，我觉得创建功能块那不是很麻烦吗。万一冲突了就弄不清楚，是不是可以用同样的编号也可以作普通的功能FC使用？？
答：不需要。
1、库中的FC有特殊功能，调用特殊功能的FC要从库里调用。
2、直接编号的是普通的的FC,没有特殊功能。
3、如果调用库中的FC时出现编号相同是可重命名用，特殊功能不消失。
问：请问EM231模块至热电偶传感器距离是不是有长度限制，是多少，如果距离超过的话，有什么好的解决办法呢？
答：个人认为回路阻抗和干扰情况是决定传输距离的决定因素，理论上到变送器的距离为100米，是在回路阻抗小于100欧，干扰不严重的场合。
热电偶距离无法满足要求的话，先增加变送器，4~20mA信号足以满足你的距离要求了，再不行就将200与现场靠近些
问：SM322的灯为什么不亮啊？强制它也没反应，换一个322还是一样。请各位高手帮帮忙啊！
答：“SM322的灯为什么不亮啊？强制它也没反应，换一个322还是一样。”？
.检查模板与安装导轨，前连接器与模板安装是否安装牢固。
.模板的电源是否连接正确？
.检查CPU的状态是否为RUN.?
.检查地址与STEP7中的硬件组态中所设置的是否一致？
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New Cisco CP-7906G IP Desk Business Office Phone VoIP w/Display
Cisco CAB-SPWR Cable / Stack Power Cable - 37-1122-01
L-C3850-24-L-S= Cisco Catalyst 3850 24 port IP Base to IP Service
Cisco 2620XM 2600 Series Multiservice Router 4S 1FE 2 WIC Slots CCNA CCNP CCIE
Cisco Server Switcher SR2016 Small Business Networking TESTED 100%
Cisco NM-2CT1 2-Port T1/ISDN-PRI CTRLR Network Module
NEW Cisco MEM2811-512D 512MB DIMM DDR Dram for Cisco 2811 Lot of 6
Cisco IGX-UXM Module with BC-UAI-3 IGX-UXM-3-T3 - Free shipping
Cisco SPA-2X1GE V02 2-Port Gig Ethernet Shared Port Adapter NIB, Sealed
Cisco Aironet AIR-ANT2544V4M-R Dual-Band MIMO Wall-Mounted Antenna *Tested
Cisco N5K-M1008 Nexus N5000 1000 Series 8XFC Module
GENUINE New Sealed- Cisco SFP-10G-LRM - CISCO 10G SFP+ LRM Quantity Available 4
NEW Sealed box Cisco Aironet AIR-CAP3702I-B-K9 AIR-CAP3702I-B-K9 - Quantity Avai
Cisco WS-C3750X-48PF-S 48-Port Gigabit 3750X w/ C3KX-NM-1G Module POE Switch - 2
New Sealed Cisco WS-C2960+24LC-L 24 Port 2960Plus-24LC-L Switch - Factory sealed
Cisco Systems Transceiver Module DS1 14. (Q2*)
Cisco ASA 5505
Cisco Linksys VoIP IP Phone Cisco SPA 942 Lines w/ PS
Cisco UCS 6120XP Fabric Interconnect with (2) N10-PAC1-550W, (2) Fan Units
Cisco WS-C3750-48PS-S V08 48 Port POE Rackmount Network Ethernet Switch
Cisco Catalyst WS-X4418-GB 18-Port 1000 Base-X Switching Module GUARANTEED
Cisco ME-3600X-24FS-M Metro Ethernet 24-Ports SFP Switch * 1 Year Warranty
L-C3560X-24-S-E C3560X-24 IP Base to IP Services E-License
L-SL-39-SEC-K9 Security E-Delivery PAK for Cisco 3900 Series
CISCO WS-X4306-GB 6-Port Gigabit Fiber GBIC Module
Cisco PIX 515E Firewall VPN-DES Restricted R License
Cisco SM-NM-ADPTR Network Module Adapter SM to NM Slot 2900 & 3900 Router Qty
Cisco Catalyst (WS-C1924 EN) 24-Ports External Computer Switch Managed
Cisco 3725 19" Rack Mount 700-13495-03 ACS-2RU-RM-19
Cisco SPA504G 4-Line IP VoIP Telephone Phone PoE w/ Display *Working*
Cisco mcs 7825 server × 2 +cisco mcs7816 server x1 unified communications server
Cisco AIR-ANT5959 Aironet Diversity Omni Directional Ceiling Mount Antenna
L-SL-29-SECNPE-K9= SEC No Payload Encryption E PAK for Cisco 2901-2951
Cisco 2611XM Ethernet Router. 100Mbps. 2 Ethernet Ports. With WIC-1T Serial Port
Cisco Encryption NM-VPN/MP 2600 3600 Series 73-3951-02 VPN Module 2600 Series
Cisco Catalyst (WS-C1924 EN) 24-Ports External Computer Switch Managed
L-C3750X-24-L-E C3750X-24 LAN Base to IP Services E-License
Cisco 2851 Integrated Services Router V07
Cisco SG100-16 16-Port Gigabit Switch V01
L-ASA5512-IP1Y= ASA 5512-X NGFW IPS 1Year (eDel)
NEW SEALED Cisco WS-C2960+48TC-L Catalyst Switch 1YearWaranty 2+Available
Cisco 2800 CISCO2811 V07 Integrated Services Router
Cisco Catalyst 3560G 24-Port PoE WS-C3560G-24PS-E
Cisco CISCO2921/K9 Integrated Services Router 512DRAM/256 Flash with VIC2-4FXO
Cisco Media Convergence Server 7800 3.4GHz 4GB MCS-7835-H2
Cisco Catalyst 2960G 24 Port Switch WS-C2960G-24TC-L v03 -FOR PARTS-
Cisco Catalyst 2960 48 Port Switch PoE WS-C2960-48PST-L v05 TESTED
CISCO 2800 Series Integrated Services Router Cisco 2801
Cisco Catalyst 3750 48 Port POE Switch WS-C3750-48PS-S Inv#TN072202
Cisco Catalyst WS-C2950G-48-EI 48-Port Switch
CISCO PIX 506E Firewall Security Appliance
Cisco Air-420-003346-050 Low Loss Antenna Cable
Cisco HWIC-4T1/E1 Clear Channel T1/E1 Module CISCO2900/3900
9 x new in box Cisco CP-CKEM-C 18-Button Attendant Console Module 9971 9951 8961
Cisco Linksys SRW224G4P 24 port 10/100 + 4 Port Gigabit Switch WebView
Cisco 1941 1900 Series CISCO1941/K9 V04 Ethernet Router
Cisco IP Conference Station CP-7937G 7937 VoIP Phone Telefon
L-SL-29-APP-K9= AppX license with; DATA,WAASX and WAAS/vWAAS 1300 conns RTU
Cisco Nexus 2248TP-1GE Fabric Extender, 2 PS, 1 Fan Module
CISCO 15454-10DME-C V02 DWDM CLEI: WMOMA5UBAB
GENUINE CISCO GLC-LH-SM 30-1299-01 GLC-SX-MM-TP Transceiver Module
*NEW* CA-PS700 7875A002 CISCO
[CISCO 2911 / K9] Integrated Services Router + Power Cable + Mount
Cisco ASA 5505 Firewall with Security Plus License
*NEW* CA-PS700 7875A002 CISCO
Cisco X2-10GB-SR Original
Cisco WIC-4ESW 4 Port 10/100 Fast Ethernet Card
Cisco ASA5585-FAN ASA 5585-X Spare Fan Module
Cisco WIC-2T 2 Port Serial Module
Cisco Systems 34-0874-01 Power Adapter for 1700 Series, ADP-30RB w/Power Cord
Cisco CISCO1720 Router without power supply. No WIC cards. Tested
*NEW* CA-PS700 7875A002 CISCO
L-ASA5505-10-50= ASA 5505 10-to-50 User Upgrade License
CISCO3925/K9 ~100% TESTED ~FREE SHIPPING ~1 YEAR WARRANTY ~ MANY PICS!
Cisco CP-7961G Unified IP Phone VoIP Telephone
L-SL-39-UC-K9 Unified Communication E-Delivery PAK for Cisco 3900 Series
NEW!!! Cisco WS-X6148-RJ45 48x Port Fast Ethernet Module f. 6500 Catalyst Switch
Cisco WS-C3750-24TS-S V05 Switch Good Condition
CISCO SPA-2CHT3-CE-ATM Cisco 2-Port T3/E3 Circuit Emulation and ATM SPA
L-C3560X-24-L-E C3560X-24 LAN Base to IP Services E-License
Cisco ASA 5505 series
CISCO NM-HDV HIGH DENSITY VOICE + VWIC 2MFT-E1-D1 4X Cisco PVDM-12 73-3691-02
Cisco HWIC-3G-CDMA 3G-V V04 Wireless WAN Interface Card Module Warranty
Cisco R2XX-LBBU2 Storage Controller Battery. BATTERY BACKUP FOR 6G BASED LSI...
CISCO3925/K9 ~100% TESTED ~FREE SHIPPING ~1 YEAR WARRANTY ~ MANY PICS!
Genuine Cisco SFP-10G-LR 850nm Transceiver module IN STOCK
Cisco Redundant Power System 2300 PWR-RPS2300 (C3K-PWR-750WAC)
Cisco C3KX-PWR-715WAC Catalyst 3560X / 3750X AC Power Supply 715Watt * 1 Yr Wty
*NEW* CA-PS700 7875A002 CISCO
NEW SEALED CISCO WS-C2960S-24TS-L - Factory Sealed in Box - Qnty Available
GENUINE Cisco PVDM3-64 Cisco High-Density Packet Voice Module Quantity Available
Cisco Catalyst 2960 Network Switch. Model WS-C2960-24TT-L V06. 24 Port
Cisco Catalyst 3524XL Enterprise Edition - SWITCH - 24 PORTS + 2 GBIC Fiber
Cisco SFP-GE-S Brand New
Cisco SG 100-16
CISCO 3825
Cisco Catalyst 2960 Network Switch. Model WS-C2960-24TT-L V03. 24 Port
Cisco 7962G 6-Line Unified IP Office Phone / CP-7962G / Free Shipping
Cisco SPA-2XCHOC12/DS0
Cisco 7962G 6-Line Unified IP Office Phone / CP-7962G / Open Box Free Shipping
LINKSYS Etherfast 10/100 5 Port Workgroup Switch EZXS55W Cisco Systems
Cisco C3KX-FAN-23CFM Catalyst Fan Module for ws-c3750x & ws-c3560x
Cisco WS-G5484 GBIC 1000Base-SX
* Lot of 2 WS-C3560-48PS-S Catalyst Network Switch
CISCO CATALYST WS-C3850-48T-S V06 SWITCH
Cisco High Speed ADSL Over POTS WAN Interface Card HWIC-1ADSL 90-Day Warranty
Cisco ATA 186 1-Port 10/100 Wired Router (ATA186-I2-A)
Dell PowerConnect 5524P PoE Switch Not Cisco Switch
Cisco Firewall ASA 5510 V05 JMX1336L18K 68–2618–03
Cisco Edge 300 Ethernet Switch - 4 Ports - 10/100/1000Base-T - CS-E300-K9 NEW
Cisco WS-C2960S-48TS-L V05 / PoE 10/100/1000 Switch
Cisco Edge 300 Ethernet Switch - 4 Ports - 10/100/1000Base-T - NEW SEALED
Cisco WS-CE500-24TT 500 Series Switch Catalyst Express 500-24TT NEW
Cisco Linksys SRW224G4 24-Port Switch with 4 Gigabit Ports
Cisco CISCO2911/K9 Integrated Services Router 512DRAM/256 Flash with VIC2-4FXO
CISCO WS-C3550-24-FX-SMI Defective , Tested Working
CISCO WS-C3550-24-FX-SMI Cosmetic Issues, Tested Working
Cisco Small Business SPA IP Phone SPA 502G
Cisco CP-7961G with -7914 with Handset Stand Good Condition.
Cisco CISCO2501 2501 Router 2x Serial + AUI
New 5-pack DS-SFP-FC8G-SW Cisco 8GB MDS SFP's 5-pack clamshells
CISCO WS-C2960-24TC-L Cosmetic Issues, Tested Working
Cisco 6500 Series Catalyst WS-C6509-NEB, (9) Fans, Nice Unit, Great Price!
Cisco Catalyst 3750 24-Port POE WS-C3750-24TS-S V05 Working w/ RAck ears
Cisco WS-X4548-RJ45V+ 48-Port Gigabit PoE+ 802.3at Module 90-Day Warranty
Cisco Catalyst 2960 Series 24-Port WS-C2960-24TC-L V06 Ethernet Switch
CISCO WS-C3750-48PS-S Cosmetic Issues, Tested Working
32R1895 IBM Cisco Intelligent Gigabit Ethernet Switch Module for IBM BladeCenter
cisco WS-C3560G-24PS-S we will buy your excess cisco 8328758800
cisco QSFP-H40G-CU1M NEW SEALED
cisco ASA5510-BUN-K9 Has securtiy base license as shown in description
Cisco ASA5510-SEC-BUN-K9 Security Plus Adaptive Security Appliance VPN Firewall
Cisco Catalyst 3560 Series PoE-24 Port Switch WS-C3560-24PS-S V06
Cisco 1720 Modular Router VPN WIC-1T + Power Supply + V.35DTE & console cable
Refurbished Cisco VIC2-4FXO 4-Port FXO Voice/Fax Interface Card 90 Day Warranty
NM-HDV 1 NM-HDV + 2 FREE PVDM-12 - S/N: JAB05260522
Cisco IP Phone 7906 CP-7906G-V09 Business Phone
cisco SFP-10G-ER Genuine
CISCO WS-C3750-48TS-S V05 Switch
Cisco IP Phone 7906 CP-7906G-V09 Business Telephone ~ No Stand
LOT OF 3 - Cisco IP 7941 CP-7941G-GE-V01 Business Phone ~ No Stand
L-C3750X-24-L-S C3750X-24 LAN Base to IP Base E-License
Cisco SM-S-BLANK Slot Blank Cover For Cisco 2900 - 3900 Routers
CISCO CATALYST 9 SLOT SWITCH - 2x PSU - WS-C6500-E
CISCO CATALYST 2960 (WS-C2960-24TT-L) 24-PORT RACKMOUNTABLE SWITCH MANAGEABLE
New Genuine Cisco WS-C2960X-24PS-L
*NEW* 010-11805-20 CISCO
Cisco WS-C3560E-12D-S 12 * 10 GE (X2) ports 2x C3K-PWR-300WAC TESTED
CISCO WS-C3560V2-24TS-E 24-PORT GIGABIT ETHERNET SWITCH
Cisco Catalyst (WS-C3750G-48TS-S) 48-Ports Rack Mountable Switch Managed
Cisco HWIC-1T High Speed WAN interfaced card- expansion module
CISCO Catalyst WS-C2960PD-8TT-L POE Switch Includes Power Adapter
Cisco ASA5510-SEC-BUN-K9 w/ ASA-SSM-10 MOD 256MB Unlimited Security License
CISCO1921/K9 2-Port Gigabit Ethernet 2x EHWIC Slots GigE PoE Router 1900 GE MW
Juniper PC-10GE-SFP 10 Port GbE 1000BASE-X SFP
CISCO CATALYST WS-C6504-E 4-SLOT CHASSIS
Catalyst 4500 E-Series 24-Port GE (SFP) WS-X4624-SFP-E Clean Serials
For Cisco PWR-950-AC 950W AC PWR Power Supply of 6503 7603
Cisco VS-S720-10G-3CXL Virtual Switching Supervisor 720 10GB w/ MSFC3
Cisco 891W Gigabit Ethernet Wireless Security Router
Cisco IP Phone CP-8945-K9
Cisco ASA 5505 Series Adaptive Security Appliance V09
Cisco VXC 6215 Thin Client
CISCO AIR-PWRINJ3 AIRONET POWER INJECTOR LOT OF 5
CISCO AIR-PWRINJ3 2units
Cisco Aironet 340 Series 11 Mbps Ethernet Bridge Air -Br342 2.4Ghz
Cisco WS-X45-SUP6-E V08
CISCO Aironet AIR-ANT1728 lot High Gain Omni Directional Antenna w/RP-TNC
Cisco AIR-PWRINj3
Cisco Aironet 1142 AIR-LAP1142N-A-K9 Dual Band Wireless Access Point 802.11n
Linksys Cisco SPA942 4-line IP Phone with 2-port Switch FREE SHIP
Cisco UCSC C240 M3S V03 12 Core XEON E5-2695 V2@2.40GHz VTX 128GB 2x650WAC CHEAP
CISCO ASA5585-S20-K9 ASA 5585-X Firewall SSP-20 loaded blade 600GBx2, 12GB RAM
Cisco Sourcefire 3D Sensor 3D8250 FirePOWER 8000 Series Appliances MSRP:$180,000
*New SEALED* Cisco WS-C2960S-F24PS-L Catalyst 2960S 24 Port PoE Switch FREE SHIP
Cisco ASA 5585-X SSP-10 ASA 5585-X Firewall SSP-10 loaded blade 600GBx2, 6GB RAM
CISCO PVDM3 -256 256-CHANNEL HIGH-DENSITY VOICE & VIDEO DSP MODULE-FREE FEDEX
Cisco C3KX-PWR-350WAC switch power supply | Ready to Ship from USA