?廈門岳航計(jì)算機(jī)工程有限公司
聯(lián)系人:郭福林
地址:廈門思明區(qū)湖濱東路湖光大廈8樓A
AB、ABB、GE、施耐德、英維斯、??怂共_、西屋、摩托羅拉
中央處理單元(CPU)是可編程邏輯控制器的控制中樞。它按照可編程邏輯控制器系統(tǒng)程序賦予的功能接收并存儲(chǔ)從編程器鍵入的用戶程序和數(shù)據(jù);檢查電源、存儲(chǔ)器、I/O以及警戒定時(shí)器的狀態(tài),并能診斷用戶程序中的語(yǔ)法錯(cuò)誤。當(dāng)可編程邏輯控制器投入運(yùn)行時(shí),首先它以掃描的方式接收現(xiàn)場(chǎng)各輸入裝置的狀態(tài)和數(shù)據(jù),并分別存入I/O映象區(qū),然后從用戶程序存儲(chǔ)器中逐條讀取用戶程序,經(jīng)過命令解釋后按指令的規(guī)定執(zhí)行邏輯或算數(shù)運(yùn)算的結(jié)果送入I/O映象區(qū)或數(shù)據(jù)寄存器內(nèi)。等所有的用戶程序執(zhí)行完畢之后,最后將I/O映象區(qū)的各輸出狀態(tài)或輸出寄存器內(nèi)的數(shù)據(jù)傳送到相應(yīng)的輸出裝置,如此循環(huán)運(yùn)行,直到停止運(yùn)行。
NEW SATNR 1/2R BALL BEARING FLANGE UNIT SN-008 SN008
SKF Rubber Sealed Bearing 6203-2RSJEM 62032RSJEM 6203-2Z/C3HT51 62032ZC3HT51?
INA Needle Bearing RNA 49/32 RNA4932 40X52X19MM New
NEW TIMKEN TAPERED ROLLER BEARING 3720
SKF SAF 517X3 517 X 3 2-BOLT PILLOW BLOCK BEARING HOUSING NIB
LOT OF 2 NEW INA BEARING 15X18X16 BZ03 95U121 3424740
NEW LOT OF 11 CULLY REDUCING WASHER 33428 2" X 1-1/2"?
NEW INA RAE20NPPB INSERT BEARING W/ COLLAR RAE 20 NPPB G0518?
SKF Bearing Adapter SNW09X112 S-09-1 1/2 S0911/2 NEW?
(2) BL Bearings Limited Sealed Ball Bearing 6000 2RSLC3 PRX 60002RSLC3PRX New
NEW NTN ROLLER BEARING BL305 ZZ/2A BL305ZZ2A BL305Z
NEW INA THRUST NEEDLE BEARING AXK 2035 AXK2035 3124310003 2C4.15F 2C415F
NEW KOYO BEARING 6203 ZNR 6203ZNR 6203 Z 6203Z
Timken Tapered Roller Bearing Cone 29590 New
NEW TIMKEN 14130 TAPERED ROLLER BEARING 14130
NEW FAG ROLLER BEARING 30206A