HPC800K02冗餘控制器套件係統模塊
HPC800K02冗餘控制器套件係統模塊
HPC800K02冗餘控制器套件係統模塊
設計原理
被動式冗餘主要由服務的請求者實現,基於失敗重試原理,在可用的服務提供者之間重試,直到找到一個可用的提供者。被動式冗餘是簡單的,但也有很大的局限性,它要求冗餘節點只是作為信息的處理者,完全作為C/S架構中的S,而不可能作為信息的發起者。這類冗餘在事務處理係統(MIS)中比較常見,因為這類係統總是響應用戶的操作,而很少會有自動收集信息並處理的業務。
在控制係統中的冗餘架構,基本都是主動式冗餘架構。它要求冗餘節點能夠自動檢查主備節點的運行狀態,並且在主節點失敗時自動切換到備節點。
主動冗餘架構也有兩種實現方式,一是主備節點間設有交換運行狀態的通訊通道,由他們自行協商何時進行主備切換,可以稱為自控方式。另一種是基於一個中心的冗餘控制器,冗餘控制器分別與主備節點通訊,並決定何時進行主備切換,可以稱為集控方式。
在筆者參與的地鐵控制係統中,兩個與硬件直接通訊的主備RTU(REMOTE TERMINAL UNIT)之間就採用自控方式。當兩個RTU之間不能通訊時,或者當前係統中僅有一個RTU時,它們會將自己設定為主節點,提供所有服務。當兩個RTU建立了通訊連接後,它們會就誰是主節點進行協商,主節點條件包括,是否連接有更多的外圍設備,是否正在對外圍係統提供服務等等。當確定誰是主節點後,兩個RTU就會自覺把自己設定為相應的工作狀態。自動方式中的主備節點,要求它們在係統中具有不同的邏輯地址,以讓它們的客戶端能夠分別找到它們,並且確定它們的工作狀態,並對它們提供的信息進行不同的處理。
在集控方式的實現中,主備節點在運行時都向冗餘控制器注冊,由冗餘控制器確定他們的運行方式,另外冗餘控制器還擔任監視主備節點運行狀態的責任。當主節點在設定的時間內沒有響應時,冗餘控制器則重新設定主備節點的運行方式,備節點代替主節點處理內部信息、響應請求。在這種情況下,主備節點具有使用相同的邏輯地址,它們的運行狀態對客戶程序是透明的,所有的客戶請求都通過冗餘控制器轉發給主節點。
在基於構件的軟件架構中,比如J2EE, CORBA, .NET, WEBSERVISE等,任一軟件構件都具有的構件標識,使構件的客戶端可以準確地定位構件的位置,並請求服務。這就跟構件冗餘係統產生衝突,冗餘係統要求所有構件都要有主備節點,並且要求其主備模式對構件的客戶端是透明的。這樣,支持主備構件的尋址服務就成為係統不可缺少的基礎服務,它可以解析客戶的尋址請求,並把服務請求轉發給主節點構件。
支持冗餘的構件本身,為了滿足苛刻的係統切換性能要求,針對具體情況特別設計。但有一點是共同的,就是主備構件的數據同步。在任何情況下,當主節點故障,備節點接管後,要能夠保持與主節點故障前同樣的內部狀態信息。一種情況是主備節點中,同時只有一個節點從外部獲得信息並對外提供服務,這樣主備節點之間的數據同步,就需要同步所有的動態數據,而且只能通過主備節點間的通訊實現。由於主備節點通常不在相同的物理位置上,其間的通訊只能通過網絡實現,這樣就保證主備節點間數據同步的,不能佔用大量的網絡帶寬。另一種情況是主備節點可以同時從外部獲得信息,但同時只有一個節點對外提供服務,這樣主備節點間的數據同步就會減少,只需要同步少量運行狀態信息,但同樣會有缺點,它要求信息提供者可以支持同時給主備節點提供相同的信息。
01 unit: AX 460
AX460
01 unit: AWT440
6ES7822-1AA06-0YA5 3個
6AV2105-0FA16-0AA0一臺
AS880-MU-ZCU-12/14 1
XCSTE7312 1
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6ES7522-5HF00-0AB0
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3BHB007700P0001 POS.A6032 2個
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2198-CAPMOD-2240 1個 23277
ABB 02P5000 帶電機EM3025 2
6SL3998-5HX01-0AA0 1
1769-OW16數量5 5333
132-4BD32-0AA0 3個
3KXF065094U0100
SF221A SFR14 ABB/2G/6M 各1
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MPL-B320P-SK72AA 16410
2097-V34PR5 14779 各1
6ES7136-6BA01-0CA0 1
T9083U 1
4AM6542-5AT10-0FA0數量1
4AM4642-5AN00-0EA0數量1
4NC5330-2CE21數量3
4AM5542-4TT10-0FA0數量1
艾默生板卡
MFC075BOM16
MFC075B0T1
MFC075BOM2
MFCO75BOM1
8913-PS-AC 1
440-2UD33-0EB1 1
440-2UD35-5FB1 1
140XBP01600 配模塊端子排 1 面價4923
PLC主機卡件BMXERT1604T 2
206-2BB00-2AC2 7
A06B-6117-H211 1
A06B-6111-H015 #H550 1
A06B-6140-H030 1
A06B-6114-H209 1
A06B-6114-H103 1
A06B-6140-H037 1
A06B-6117-H105 1
A06B-6141-H045#H580 1
A06B-6140-H055 1
A06B-6132-H003 1
A06B-6141-H022#H580 1
A06B-6141-H011#H580 1
A06B-6117-H109 1
A06B-6117-H106 1
A06B-6117-H303 1
A06B-6117-H206 1
A06B-6140-H006 1
A06B-6141-H055#H580 1
A06B-6141-H037#H580 1
A02B-0285-B803 1
A06B-6117-H210 1
A03B-0814-B102 1
A02B-0307-B822 1
A06B-6132-H002 1
A06B-6111-H401 1
A06B-6077-H002 1
3AXD50000010454 2
BDFC-01C
6GK1500-0FC10 46
6RA7018-6DS22-THY 2
6RA7018-6DS22-0 1
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140XTS00200 3 面價355
450L-E4HL1500YD X2面價 16435
450L-APT-PW-5 X1面價829
450L-APR-ON-5 X1面價1228
889D-F5BC-2 X2面價236
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IS220PDOAH1A 1
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IS220PTURH1A 1
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IS200WROBH1A 3
6AG1332-8TF01-2AB0 6
2LC0101-3WA00-0AA0 8
2LC0101-2WA00-0AA0 4
6ES7331-7NF10-0AB0 1
6AG1052-2MD00-2BA4 1
6GK1571-1AA00 2
6SE7090-0XX84-30DB1 2
6SL3760-0DD00-0AA0 2
6ES7953-8LG30-0AA0 5
6AG1232-4BH30-4XB0 1
6AG1234-4HE30-4XB0 1
6SL3760-0DE00-0AA0 30
6SL3760-0DF00-0AA0 30
6AG1055-1MM00-7BA2 1
6AG1212-1AE31-2XB0 2
6AG1214-1AG40-4XB0 1
6AG1223-1BL32-4XB0 1
6AG1221-1BH32-4XB0 1
1756-BA2 20 面價1650
1734-VHSC24 10 面價3472
1769-L18ER-BB1B 2 面價24995
ABB 1SCA022042R6020 50
DSMB-02C 64666606 2
DSAB-01C 64630199 2
CT-ERS.12 1SVR630100R3100 4
OXP6X161 1SCA022067R1760 30
1SCA100256R1001 30
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ACS880-104-0600A-7+C183+E205 1
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PFSK 113 1
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2711P-T10C15A2-----1
2711P-RDT10C 1
2711P-RN15S 1
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6SN1123-1AA00-0BA0,1個
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i510-C0.37/400-3 1
i510-C0.55/400-3 1
i510-C0.75/400-3 1
BTL6-E500-M2800-PF-S115 1
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MITSUBISHI
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3RX9305-1AA00,2pcs
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MR-J3ENSCB L5M-L 3
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GT16-75PWA BKO-C11607H03 5
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PXC-J1180151 5
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AAI143-H50/A4S10 3
MRIC-32/230VAC-DC 2
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Woodward 2301D 1
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變頻器MD290T22G/30P 1
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FFR-DT-182A-SS1 1
JBK4-1600VA 380V/220V 1
FR-E540-2.2K-CH 1
Q01CPU(帶程序) 2
Q64DA-10-10V/0-20MA 1
BSM100GB120DN2KG09240 0457 3
24VLP4K09 01RW3 6
FX3U-48MR/DS 帶CMT1801粗紗機程序及通訊線 1
PS3N-F 220V/24VDC 6.5A 2
FC-301P4KOT4E20H1XGC 4KW 380V 1
PNOZ-X3 2
NH40-100/4SZL 1
KBCH12001W12LEL數量2
D20DMU-S23PVA-Z4X0X 1
D20-50E/H10011000 6
SCHAFFNER FS21226-130-35 1
MDS-DH-CV-450 1
78-092-0300 584060TA ASCOM 3
BGE-1/5,(DEGUSSA FURNACE) 10
LS72/4E0000223,(DEGUSSA FURANCE) 10
VW3M8223R30 6
NEXCOM PEAK530 1
WOODWARD MRG3I1UOD 3
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