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相對于實力雄厚的著名PLC廠商而言,國內(nèi)公司的研發(fā)實力較弱。
本土PLC發(fā)展之路崎嶇
自20世紀70年代后期進入中國以來,PLC已經(jīng)廣泛地用于工業(yè)生產(chǎn)中幾乎每一個角落。雖然國產(chǎn)PLC有了長足的發(fā)展,但是與國外品牌依舊存在一定的差距。
首先,是技術(shù)方面的原因。早期的PLC技術(shù)相對封閉,開放性不夠,缺乏一個通用的技術(shù)平臺,國內(nèi)研發(fā)單位很難得到前沿的PLC核心技術(shù),需要長時間的不斷嘗試和摸索?!捌呶濉焙汀鞍宋濉逼陂g,國內(nèi)部分研究單位在PLC研發(fā)上進行了科技攻關(guān),取得了一些攻關(guān)成果,也基本具備了自主研發(fā)PLC的能力。但是,缺乏持續(xù)研發(fā)和產(chǎn)品化能力,最終沒能形成規(guī)模經(jīng)營。
第二,是資金問題。PLC既是專業(yè)產(chǎn)品,也是自動化領(lǐng)域的一個通用產(chǎn)品,要形成規(guī)模經(jīng)營必須具有較大的資金投入。有人意識到了開展PLC業(yè)務(wù)的重要性,但資金不夠;有人有資金,卻認識不到其長遠價值。應(yīng)該說,部分國產(chǎn)PLC產(chǎn)品確有其獨到之處,但由于缺乏足夠的資金支持,無法形成規(guī)模經(jīng)營。作坊式生產(chǎn)或者受短期盈利目標的約束,使其無法形成再投入和擴大再生產(chǎn),制約了產(chǎn)品的健康發(fā)展。
第三,是制造工藝問題。在10年前甚至5年前,國內(nèi)的制造環(huán)境如生產(chǎn)工藝、模具制造、質(zhì)量控制等方面仍存在較大欠缺,無法滿足工藝要求較高的PLC批量生產(chǎn)。
第四,面臨的是一個與大批國際跨國公司競爭的成熟市場,如何有效地將產(chǎn)品推廣出去尤為重要,而國內(nèi)公司恰恰缺少一支具有獨到經(jīng)營理念的市場隊伍,市場開拓力量薄弱。
最后,是體制問題。原來許多做PLC的是研究所或者國營企業(yè),體制和機制問題限制了PLC的產(chǎn)業(yè)化發(fā)展。
Astec PSE6-300-034A Unisys 455018822-013 Circuit Board Power Supply Burn-In
Ausgangskarte Homatic Circuit Board 2-083-01-5410 _ 2083015410 _ HC020
Autotech MPC-M3100-M11 Circuit Board MPCM3100M11 (Pack of 3) - Used
BAILEY CIRCUIT BOARD 72311-02-04-04-01-01-15
BAILEY CIRCUIT BOARD 72311-03-04-04-01-01-15
BAILEY INFI-90 TRANSFER MODULE CIRCUIT BOARD INIIT02 103260
Barber Colman Circuit Board A-60010-103 Used #41664
BARBER COLMAN DATA HANDLER CIRCUIT BOARD_A-60010-709_A60010709_33-1664
BARBER COLMAN MACO 4000 DATA HANDLER PCB A-60010-004 CIRCUIT BOARD. PCBA60010-00
BARBER COLMAN MACO 4000 INPUT PCB LOWER A-13894 CIRCUIT BOARD. PCBA13894
BASLER ELECTRIC 9 2614 02 100 REV G CIRCUIT BOARD (NEW)
BAUMULLER SERVO CONTROL CIRCUIT BOARD MODULE 3.8426Ca
BENSHAW BIPC-300010-03 CIRCUIT BOARD BENSHAW BIPC30001003
BENSHAW CIRCUIT BOARD CARD BIPCRS6BC REV 10
Benshaw Micro Bypass Circuit Board Card BIPC-300010-01 BIPC30001001
Benshaw RediStart Micro BIPMICROLCD LCD Screen Circuit Board Keypad
Benshaw RediStart Micro BIPMICROLCD LCD Screen with Cable Circuit Board
Bosch CNC Servo-i PLC 1070 068008-102 4993-I-C-B Servoi Module Circuit Board
Bridgeport CNC Boss PCB Circuit Board A025115 VCC RSI _ AO25115
Bridgeport CNC Boss PCB Circuit Board A025118 BCC VCC _ AO25118
BRIDGEPORT CONTROLS 1927990 CIRCUIT BOARD
BRIDGEPORT CONTROLS 2928472 CNC MILL CIRCUIT BOARD
Bridgeport Controls ERS Card A027990 Circuit Board PCB
Bridgeport Textron Circuit Board 1938000 _ 1938OOO _ 1937862 _ 1937784
Bridgeport Textron EZIO Circuit Board 1937308 _ 19373O8 _ 1937306 Rev 0 PCB
Brother Circuit Board A1 AI AM-1 0001020A _ B/N: 521097-5 _ 5210975
Brother Circuit Board AI AM-1 _ AIAM1 _ B521098-6 _ B5210986 _ 9811007B
Brother Circuit Board B521049-6 _ B5210496_ Brother CNC Tapping Center TC-221
Brother Circuit Board B521067-3_B5210673_B521049-6_B5210496_B521124-1_B5211241
Brother Circuit Board B521068-1 _ B5210681 _ Brother CNC Tapping Center TC-221
BSK P-14989 I/O Circuit Board /// I / O Circuit Board
BSK P14989 In/Out Circuit Board // I/O Board
BSK P-16787 /// P-65353 MPU Circuit Board-I D.M. Board
BSK P-51201 300T Operation Key Board Circuit Board
Buehler Circuit Board Polishing Head Discs
CAE ELECTRONICS MA1075015-01 CIRCUIT BOARD *NEW IN A BOX*
CAE ELECTRONICS MA133719012268 CIRCUIT BOARD
CAE ELECTRONICS MA8672002268 CIRCUIT BOARD
CARRIER - CIRCUIT BOARD Part # 42QN6I5850
CENTRAL DATA CORP. CD21/3038 CIRCUIT BOARD *NEW IN A BOX*
CHARMILLES / FARNELL ROBOFORM EDM CIRCUIT BOARD N200T233/U
Charmilles Control PLC PCB Circuit Board 811033 E_852338 A, Robocut 2 CNC EDM
Charmilles Control PLC PCB Circuit Board 812029_852057 Robocut 2 CNC EDM
Charmilles Control PLC PCB Circuit Board 813078 E _852029 Robocut 2 CNC EDM
Charmilles Control PLC PCB Circuit Board 852021_813077 Robocut 2 CNC EDM
Cincinnati 3-424-2169A03 Circuit Board
CINCINNATI 3-533-0242G CIRCUIT BOARD *NEW OUT OF A BOX*
Cincinnati Circuit Board 3-531-4085A Rev F/H _ 35314085A _ 3-531-4O85A
Cincinnati Circuit Board 3-711-2704G _ 37112704G _ 3-711-27O4G Rev + _ Rev T
Cincinnati Circuit Board 38930674