SIEMENS 6ES7431-0HH00-0AB0

網(wǎng)絡(luò)冗余

    在DCS控制系統(tǒng)中至少存在2個網(wǎng)絡(luò)，一個是管理層和控制層之間的通信網(wǎng)絡(luò)，另一個是過程控制層與底層I/O卡件層之間的485通信網(wǎng)絡(luò)。上層網(wǎng)絡(luò)主要的作用是實(shí)現(xiàn)管理層對控制層實(shí)時檢測，和對下層控制器的配置設(shè)置等任務(wù)。下層網(wǎng)絡(luò)是為了把I/O卡件采集的數(shù)據(jù)傳送到過程控制層，然后把控制層的控制數(shù)據(jù)傳送給I/O卡件。這2個網(wǎng)絡(luò)在DCS控制系統(tǒng)中的重要性是不言而喻的。

    針對上層網(wǎng)絡(luò)模塊的冗余，當(dāng)今的工業(yè)自動化領(lǐng)域出現(xiàn)了各種各樣的支持鏈路冗余功能的工業(yè)以太網(wǎng)交換機(jī)，它們解決了由節(jié)點(diǎn)故障導(dǎo)致網(wǎng)絡(luò)癱瘓的問題。

廈門仲鑫航自動化設(shè)備有限公司
★ ：張芳
★ ：  +
★ （請備注張芳收，謝謝！）
★ 業(yè)務(wù)
★ ：
★ 地址：廈門思明區(qū)湖濱東路湖光大廈8樓A　

DY80 Combustible Gas Detector NEW

OMRON E2E-X2E1 PLC NEW IN BOX FREE SHIP

KEYENCE FS-V11 NEW IN BOX

OMRON NEW H3CR-A 220VAC PLC (AB8)

ABB NEW TA25DU14 PLC (AC0)

PAIR OF SUPER WIDEFIELD WF 10X/20 EYEPIECE (30MM) FOR S

FANUC A66L-6001-0023 L2R003 2M Optical Fiber

NIKON E 10x/0.25 MICROSCOPE OBJECTIVE LENS 160/-

Mitsubishi FX-EEPROM-4 NEW IN BOX

PAIR OF WF 10X/20 EYEPIECE FOR NIKON OLYMPUS LEICA ZEIS

DY82 Halogan Gas Leak Detector NEW

NEW OMRON Photoelectric Switch E3JK-R2M2 E3JKR2M2 NEW I

OMRON NEW E32-D21L (PLC (AB8)

Keyence Fiber Optic Sensor Pair FU-7F FU7F NEW FREE SH

ONE OMRON E32-D21 2M FREE SHIP

ONE PROFACE PRO-FACE GP2500-TC11 Touch Screen Protectio

KEYENCE NEW FU-7F PLC

ONE VC99 3 6/7 Auto Range Digital Multimeter Thermomete

OMRON NEW TL-W5MB1 TLW5MB1 PLC

ONE OMRON E3X-NA11 12~24VDC 2M FREE SHIP

OMRON E5EX-A

OMRON SHL-Q2255 NEW IN BOX

Omron E3X-A11 E3XA11 Photoelectric Switch NEW

ONE PANASONIC Nais PLC AFPX-BATT NEW IN BOX FREE SHIP

ONE NEW IBM M1015 46M0864 ServeRAID M1000 Series Advanc

KEYENCE Optic Fiber lens F-4 F4 NEW FREE SHIP

Magnetic Pick up MSP676 rotate speed sensor Generator p

Omron Limit Switch HL-5100 HL5100 New

KEYENCE Focusing Lens F-3HA F3HA NEW

SCHNEIDER NEW LC1D18F7C PLC

KEYENCE Fiber Optic Sensor FU-5F FU5F NEW FREE SHIP

OMRON Proximity Switch TL-W5MD1 TLW5MD1 NEW

Omron Limit Switch WLCA12-2N WLCA122N NEW

KEYENCE Fiber Optic Sensor FU-35TZ FU35TZ NEW FREE SHIP

Omron Photoelectric Switch Fiber Unit E32-T11L E32T11L

KEYENCE Optic Fiber lens F-4HA F4HA NEW IN BOX FREE SHI

OMRON PLC SYSMAC mini SK20-C2DR-D

FUJI USED HH23PN-L 200V 50HZ PLC (AB1)

OMRON NEW E2E-X1B1 PLC

NEW FOR Siemens 6ES7972-0BB52-0?XA0 6ES7 972-0BB52-0XA0

SMC NEW CQSB12-10D PLC

SMC NEW KAH06-08 PLC

SMC NEW KFH06-01S PLC

SMC NEW AN103-01 PLC

SMC NEW AS3201F-03-08S PLC

SMC NEW KQ2T12-00A KQ2T08-00A PLC

SMC NEW AS3211F-03-08S/?AS2201F-02-06S PLC

SCHNEIDER USED XCK-M ZCK-D21 PLC

OMRON USED G6B-4CB PLC

SMC NEW BMB4-050 PLC

SMC NEW KQ2L08-02AS PLC

OMRON NEW E3Z-D81 (PLC (AB8)

SMC NEW AS1201F-M5-23-J PLC

SMC NEW AS1201F-M5-04-X?26 PLC

FESTO NEW QSL-V0-1/8-8訂 PLC

FESTO NEW QS-V0-3/8-8 PLC

FESTO NEW QS-V8-1/4-8 PLC

FESTO NEW QS-V0-1/4-10 PLC

FESTO NEW QSL-V8-1/4-8/ PLC

SMC NEW KRU12-00 PLC

YASKAWA NEW JZSP-CMP00-02-E PLC

LED Ring Light Illuminator for Meiji EMZ EMZ5 Microscop

Sony Video Camera Cable F XC-555 XC-777 XC-999 XC Serie

PISCO NEW VFU3-88P PLC

SCHNEIDER NEW XCE-118 XCE118 PLC

SIEMENS NEW 6ES7 193-4CD30-0AA0 PLC

FESTO NEW ESS-6-SS 189276 PLC

NEW Cable FOR Digital GP / Proface PRO-FACE GPW-CB03 WI

KEYENCE FU-4F NEW IN BOX

OMRON Photoelectric Switch E3Z-LS61 E3ZLS61 NEW

GAVR-8A AVR Generator Automatic Voltage Regulator Modul

GM550 Noncontact IR Infrared Thermometer Temp Temperatu

ONE OMRON H7EC-N H7ECN NEW IN BOX FREE SHIP

ONE OMRON E2E-X14MD1 FREE SHIP

Magnetic Pick up MSP678 rotate speed sensor Generator p

Mitsubishi Servo Cable MR-JHSCBL5M-L MRJHSCBL5ML NEW IN

ONE OMRON TL-W3MC1 2M FREE SHIP

ONE NEW OMRON E3Z-D61 E3ZD61 Photoelectric Switch Sense

KEYENCE FU-67 NEW IN BOX

PANASONIC USED FC-25 PLC

MITSUBISHI USED NV30-FA 20A PLC

OMRON NEW E3Z-T81 PLC (AB8)

OMRON NEW TL-W5MC1 (PLC (AB8)

LED Ring Light Illuminator For Nikon Olympus Leica Zeis

ONE Keyence Fiber Optic Sensor FU-68 FU68 NEW FREE SHIP

ONE NEW USB-CN226 CS1W-CN226 PLC Programming Cable for

NEW FOR SIEMENS 6ES7291-8BA20-0?XA0 6ES7 291-8BA20-0XA0

Sony Video Camera Cable FOR XC-ST30 XC-ST50 XC-ES50 XC-

Schneider emecanique Thermal Overload Relay LRD08C L

ONE NEW KEYENCE FU-35FZ FU35FZ FREE SHIP

10mW Visual Fault Locator Fiber Optic Cable Tester Mete

Delta Digital Keypad Operation Panel VFD-M LC-M02E NEW

ONE NEW KEYENCE USB PLC USB-KV programming cable FREE

SCHNEIDER NEW LRD21C 12-18A PLC (AC0)

SIEMENS NEW 3TB4322-0X 22A AC24V 110V 220V 380V 3TB4 32

ONE NEW FANUC Membrane Operator Keypad keysheet A98L-00

ONE OMRON E2E-CR8C1 12~24VDC 2M FREE SHIP

SMC NEW AS2002F-04 PLC

MITSUBISHI USED SD-Q11 DC24V PLC

NEW Automatic Voltage Regulator AVR SX460 for Generator

NEW FANUC MEMBRANE Operator Keypad A98L-0001-0524T FREE

ONE In PRO/1000 MT Dual Port Server Adapter PCI/PCi-

OMRON Proximity Switch TL-W3MC2 TLW3MC2 New

FESTO NEW GR-M5-B 151213 PLC (AB8)

NEW OMRON PS-3S FREE SHIP

ONE OMRON EE-SY672 FREE SHIP

MITSUBISHI USED MR-J2HBUS05M PLC

ONE ORIGINAL NEW KEYENCE FU-35FA FREE SHIP

ONE CABLE FOR Mitsubishi Servo Encoder MR-JCCBL2M-L NEW

Turck Ni5-G12-AP6X NEW

Omron Photoelectric Switch Fiber Unit E32-DC200B E32DC2

Omron Proximity Switch E2EC-CR5C1 E2ECCR5C1 New

PANASONIC NEW PM-U24 PLC

ONE OMRON D2S-01L2D FREE SHIP

Magnetic Pick up (MPU)P/N 3034572 Sensor Pickup NEW

Keyence Fiber Optic Sensor FU-79 FU79 NEW FREE SHIP

AR816 Digital Air Wind Speed Gauge Wind Speed Anemomete

FUJI USED RS4 DC24V PLC

ONE OMRON G3NA-220B AC200~240V FREE SHIP

ONE PRO-FACE GPW-CB03 touch screen download cable USB t