描述
在程序執(zhí)行過(guò)程中,同一周期內(nèi),前面的邏輯結(jié)果影響后面的觸點(diǎn),即后執(zhí)行的程序可能用到前面的最新中間運(yùn)算結(jié)果;但同一周期內(nèi),后面的運(yùn)算結(jié)果不影響前面的邏輯關(guān)系。該掃描周期內(nèi)除輸入繼電器以外的所有內(nèi)部繼電器的最終狀態(tài)(導(dǎo)通與否),將影響下一個(gè)掃描周期各觸點(diǎn)的開(kāi)與閉。
(3)輸出刷新程序執(zhí)行階段的運(yùn)算結(jié)果被存入輸出映像區(qū),而不送到輸出端口上。在輸出刷新階段,PLC將輸出映像區(qū)中的輸出變量送入輸出鎖存器,然后由鎖存器通過(guò)輸出模塊產(chǎn)生本周期的控制輸出。如果內(nèi)部輸出繼電器的狀態(tài)為“1”,則輸出繼電器觸點(diǎn)閉合。全部輸出設(shè)備的狀態(tài)要保持一個(gè)掃描周期。
歐美品牌停產(chǎn)的,常用的“PLC”備品備件
我司產(chǎn)品應(yīng)用于以下領(lǐng)域:
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
?
5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列
本特利,英維思,伍德沃德,??怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè),ACSO,力士樂(lè)等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。
BRISTOL BABCOCK 390439-02-9 I/O Termination BOARD
BRISTOL BABCOCK REMOTE SET REGULATOR 9110-00A-122-12?0
BRISTOL BABCOCK 390439-02-9 I/O Termination BOARD
BRISTOL BABCOCK 530111A-143-001-123-111-050
BRISTOL BABCOCK BR5245 NSFP BR5245
BRISTOL BABCOCK 396357-11-3 NSFP 396357113
BRISTOL BABCOCK 2808-15A-242-101-10 NSPP 280815A2421011
BRISTOL BABCOCK 2808-35A-131-212-001-110 NSPP 280835A13
BRISTOL BABCOCK 389510-01-7 USPP 389510017
BRISTOL BABCOCK 390222-06-2 USPP 390222062
BRISTOL BABCOCK UCS3380 USPP UCS3380
BRISTOL BABCOCK 384348-01-7 USPP 384348017
BRISTOL BABCOCK 389406-01-5 USPP 389406015
BRISTOL BABCOCK SLC3740-40A110 USPP SLC374040A110
BRISTOL BABCOCK 384321-01-1 USPP 384321011
BRISTOL BABCOCK 384322-01-8 USPP 384322018
BRISTOL BABCOCK 384345-01-8 USPP 384345018
Bristol Babcock 506008-26-6 1/8″NPT Pressure Switches
BRISTOL BABCOCK 384354-01-7 USPP 384354017
BRISTOL BABCOCK 390439-02-9 USPP 390439029
BRISTOL BABCOCK 384240-01-1 USPP 384240011
BRISTOL BABCOCK 390439-02-9 I/O Termination BOARD
BRISTOL BABCOCK 392005-02-6 USPP 392005026
BRISTOL BABCOCK 390439-02-9 I/O Termination BOARD
BRISTOL BABCOCK 392006-02-2 NSPP 392006022
BRISTOL BABCOCK 392005-02-6 NSPP 392005026
BRISTOL BABCOCK 392008-04-1 NSPP 392008041
BRISTOL BABCOCK 392535-01-7 NSPP 392535017
BRISTOL BABCOCK 384240-01-1-R6 USPP 384240011R6
Emerson Bristol Babcock Pressure Switch 506008-649 ASM
Bristol Babcock Model 506008 Pressure Switch New
ALVARION BREEZECOM HFIT 200 eMGW HFIT-200 HFIT200
ALVARION BREEZECOM HFIT 200 eMGW HFIT-200 HFIT200
ALVARION BREEZECOM HFIT 200 eMGW HFIT-200 HFIT200
ALVARION BREEZECOM HFIT 200 eMGW HFIT-200 HFIT200
ALVARION DS11-RB/OUTDOOR?-ETSI 811552 2.4-2.7GHZ
ALVARION WIMAX WI2-CTRL-40 858721
Alvarion BMax BMAX-CPE-IDU-DV-FT-1D2V BAT 735821
ALVARION BreezeACCESS SU-RA-3.5B 835251
DTT R2000-ACCESS DATANG SU-RA-3.5A1+SU-NI-1D-3.5A1
Alvarion AN1339 2.3-2.7GHz/90 ANTENNA 723209
Alvarion Bmax BST AU ODU 3.31 733211
Alvarion W3k BS-SA 26ghz P/N:500505 48v
Alvarion BS-SA 26ghz P/N:500039 48v
Alvarion BMax DME CPE SI-E-3.5 735175
Alvarion BreezeACCESS SU-NI-BD-OF OFDM 635303
ALVARION AU-RE-LP-2.4 BreezeACCESS 824712
ALVARION E1-SWITCH FOR IDU 500068
ALVARION BMAX-MBST IDU-2CH-AC 735207
ALVARION BreezeMAX PC Card 4M-CPE-PCcard-2.5 725900 NEW
ALVARION BreezeCOM BS-AU-VL CARD AD4276
ALVARION 4M-CPE-ODU-PRO-3.5 ANTENNA 735940
ALVARION BA0008-01 BOARD
ALVARION/NERA WiLink-CPE-ODU-PRO-SE-3.5 735121N
Alvarion RFU-TS 26G 300058 AS0175 NJT7002C4
ALVARION BreezeACCESS AU-RE-3.5a1 835650 W/AU-NI-3.5a1
ALVARION SU-RA-HP-2.4 824714 W/SU-NI-1D-HP-2.4 824702
ALVARION BreezeACCESS SU-A-5.4-54-BD-H-VL 854522 NIB
ALVARION BreezeACCESS SU-RA-5.7 857212
ALVARION BMAX2 SU-3.5G AD8469-01 ODU EXT ANTENNA
ALVARION BMAX-MBST IDU-2CH-DC-3.3 733208
ALVARION BREEZEACCESS SUBSCRIBER UNIT SU-O-BD-2.4-220?V
ALVARION BREEZECOM SU-A-8D-2.4-220V OUTDOOR UNIT