NIOC-01C
NIOC-01C
有許多的小伙伴在繼電器聯(lián)鎖控制與PLC控制間不懂得是什么意思,因?yàn)樗麄兇嬖诤艽蟮南嗤?。今天小編就這個(gè)問題一起來聊聊他們之間的,一起看看吧。
如果對照一下繼電連鎖控制回路與plc控制回路的話,竟然它們的工作方式*不同。
圖1對應(yīng)的邏輯連鎖控制回路,如果有n個(gè)這樣的控制回路的話,則當(dāng)你操縱任意一個(gè)起動或者停止控制按鈕的話,相對應(yīng)的接觸器會吸合或者斷開。在這兒我們是忽略掉了接觸器得電或者是斷電所必須要時(shí)間。準(zhǔn)確的說它是“并聯(lián)”控制的。如果以計(jì)算機(jī)的術(shù)語來描述,他無時(shí)不刻是處在“中斷工作”的進(jìn)程當(dāng)中,即你的任何一個(gè)輸入操作他會立即響應(yīng)。
:祖巧麗
:
:祖巧麗
:
而對于圖2這樣的PLC控制回路來說。如果對應(yīng)了程序1這樣的程序。它是這樣工作的:輸入、輸入鎖存,按照程序1從左到右從上至下掃描運(yùn)算出結(jié)果,輸出鎖存、輸出。它是在時(shí)鐘信號的驅(qū)動下,定時(shí)串行工作的。即輸入,程序運(yùn)算,輸出,周而復(fù)始反復(fù)進(jìn)行。只是由于串行程序掃描運(yùn)行的速度太快而我們察覺不到而已?;蛘哒f它在不停的運(yùn)算刷新(特定的中斷運(yùn)行程序除外)輸出。
以上這兩者*不同的工作方式應(yīng)該充分理解。并非所有輸入信號都能夠被PLC系統(tǒng)接收。例如頻率比較快的輸入,比如計(jì)數(shù)輸入,如果你啟用了PLC內(nèi)部的普通計(jì)數(shù)器,不能夠*再現(xiàn)計(jì)數(shù)的輸入值時(shí),你就要啟用高速計(jì)數(shù)器和高速計(jì)數(shù)器所對應(yīng)的輸入接口。當(dāng)然對于普通的輸入信號PLC是完*夠接受得到的。例如我用FX2型PLC,程序1K左右,自動程序的啟動按鈕是i d e c品牌的按鈕,我瞬間點(diǎn)動一下程序就運(yùn)行起來了,反復(fù)試驗(yàn)的結(jié)果都如此。也就是說,盡管我按按鈕的時(shí)間非常短暫,但他已經(jīng)能夠被PLC系統(tǒng)所識別和接受。所以我們可以理解為,盡管PLC系統(tǒng)是“串行”控制的,但是由于PLC的運(yùn)行速度特別的快,加上PLC系統(tǒng)的 CPU運(yùn)算速度的不斷提高,除特別的信號需要特殊的PLC接口加上動用一些PLC的特殊指令外,普通的控制程序應(yīng)該是沒有問題,除了你有大意或忽略。
有許多的小伙伴在繼電器聯(lián)鎖控制與PLC控制間不懂得是什么意思,因?yàn)樗麄兇嬖诤艽蟮南嗤?。今天小編就這個(gè)問題一起來聊聊他們之間的,一起看看吧。
如果對照一下繼電連鎖控制回路與plc控制回路的話,竟然它們的工作方式*不同。
圖1對應(yīng)的邏輯連鎖控制回路,如果有n個(gè)這樣的控制回路的話,則當(dāng)你操縱任意一個(gè)起動或者停止控制按鈕的話,相對應(yīng)的接觸器會吸合或者斷開。在這兒我們是忽略掉了接觸器得電或者是斷電所必須要時(shí)間。準(zhǔn)確的說它是“并聯(lián)”控制的。如果以計(jì)算機(jī)的術(shù)語來描述,他無時(shí)不刻是處在“中斷工作”的進(jìn)程當(dāng)中,即你的任何一個(gè)輸入操作他會立即響應(yīng)。
:祖巧麗
:
:祖巧麗
:
而對于圖2這樣的PLC控制回路來說。如果對應(yīng)了程序1這樣的程序。它是這樣工作的:輸入、輸入鎖存,按照程序1從左到右從上至下掃描運(yùn)算出結(jié)果,輸出鎖存、輸出。它是在時(shí)鐘信號的驅(qū)動下,定時(shí)串行工作的。即輸入,程序運(yùn)算,輸出,周而復(fù)始反復(fù)進(jìn)行。只是由于串行程序掃描運(yùn)行的速度太快而我們察覺不到而已?;蛘哒f它在不停的運(yùn)算刷新(特定的中斷運(yùn)行程序除外)輸出。
以上這兩者*不同的工作方式應(yīng)該充分理解。并非所有輸入信號都能夠被PLC系統(tǒng)接收。例如頻率比較快的輸入,比如計(jì)數(shù)輸入,如果你啟用了PLC內(nèi)部的普通計(jì)數(shù)器,不能夠*再現(xiàn)計(jì)數(shù)的輸入值時(shí),你就要啟用高速計(jì)數(shù)器和高速計(jì)數(shù)器所對應(yīng)的輸入接口。當(dāng)然對于普通的輸入信號PLC是完*夠接受得到的。例如我用FX2型PLC,程序1K左右,自動程序的啟動按鈕是i d e c品牌的按鈕,我瞬間點(diǎn)動一下程序就運(yùn)行起來了,反復(fù)試驗(yàn)的結(jié)果都如此。也就是說,盡管我按按鈕的時(shí)間非常短暫,但他已經(jīng)能夠被PLC系統(tǒng)所識別和接受。所以我們可以理解為,盡管PLC系統(tǒng)是“串行”控制的,但是由于PLC的運(yùn)行速度特別的快,加上PLC系統(tǒng)的 CPU運(yùn)算速度的不斷提高,除特別的信號需要特殊的PLC接口加上動用一些PLC的特殊指令外,普通的控制程序應(yīng)該是沒有問題,除了你有大意或忽略。
SQUARE D POWER DISTRIBUTION BLOCK COVER 9080 LB51 *NEW, PACK OF 5*
SQUARE D 1.5KVA DRY TYPE SINGLE PHASE 1.5S1F TRANSFORMER SFA H-1
SQUARE D DOOR CLOSING MECHANISM, 9423M8 SERIES A *NEW*
SQUARE D SERVICE FITTING, G2-BA *NEW*
SQUARE D 60A 250/600V S2 CIRCUIT BREAKER FHL36060
SQUARE D SINGLE POLE FUSE HOLDER 9080 / PF-1 SER-B LOT OF 4
SQUARE D 230/460V TO 115V STEP-DOWN TRANSFORMER DISCONNECT SK500G1
SQUARE D TYPE 3R 50/60HZ 2240/440 TO 110/220V 5KVA ST TRANSFORMER 5S67F
SQUARE D 3AMP MAG-GARD CIRCUIT BREAKER FAL3600311M
TORRINGTON 50MM I.D. 65MM O.D. NEEDLE ROLLER BEARING, HJ-324120 *NEW*
SQUARE D 110/120VAC COIL NEMA SIZE 00 3-POLE STARTER 8536 SA012
SQUARE D ELBOW 45 DEGREE 4X4 NIB
SQUARE D 600V 400A 2 POLE MOLDED CASE CIRCUIT BREAKER, LA26400AB
SQUARE D 60A 600VAC SAFETY SWITCH SER.F05 HU6S2AWK 99246
SQUARE D 350A 600V 3 POLE POWER DISTRIBUTION BLOCK LBC363206 *NEW*
SQUARE D * MAGNETIC COIL * 2936 S1 C30A
SQUARE D 10A 2-POLE 120/240VAC CIRCUIT BREAKER NE-2652
SQUARE D 12VDC COIL MINIATURE GENERAL PURPOSE RELAY RSD4V51 *NEW*
SQUARE D 400A PBQA FUSIBLE SWITCH INTERLOCK HARDWARE KIT PBQA-INTKIT *NEW*
SQUARE D 3-POLE 40A DISCONNECT SWITCH 9421 V2 SER. A *NEW*
SQUARE-D * DOUBLE BLOCK * 9001KA-1 SER G
SQUARE D MULTI 9 C60 4A 1-POLE C-CURVE CIRCUIT BREAKER NIB 24428 100565
SQUARE-D * MAGNET COIL NIB * 2936 S1 C27A
SQUARE D LIMIT SWITCH ARM W/ ROLLER 9007LA7 2441C41G1 *NEW*
SQUARE D SORGEL CLASS AA 60HZ 3PH 480 TO 480/277 30KVA TRANSFORMER 30T76H
SQUARE D 400A MOULDED CASE SWITCH SLAL3000M SERIES 4
SQUARE D 3-POLE 30A 600VAC CIRCUIT BREAKER FAL36030-15M
SQUARE D EQ5300 SERIES 1 52045-034-50 MEMPACK, NEW
SQUARE D 225T3H SORGEL INSULATED TRANSFORMER 225 KVA
SQUARE D 225A, 240VAC/48VDC MAX, 4W, 3-PHASE PANELBOARD NQOD442L225CU
SQUARE D PADLOCK ATTACHMENT 9001K4 *NEW*
SQUARE D 60AMP TYPE S2 CIRCUIT BREAKER FHP36060
EMECANIQUE SQUARE D 1HP/0.75KW VARIABLE SPEED AC DRIVE ATV18U18N4
SQUARE D CIRCUIT BREAKER 1P 10A 277VAC NIB MG 24432 34620
SQUARE D TYPE 3R, 3S &12 ENCL. SER. E1 PANELBOARD W/ BREAKERS, BROKEN HANDLE
SQUARE D B6.25 THERMAL OVERLOAD HEATING ELEMENT, LOT OF 3, NEW IN BAG
SQUARE D 9007CO54P5 SERIES A 24-120 VDC LIMIT SWITCH, NEW
SQUARE D SCHNEIDER ELECTRIC 1-PHASE 1KVA 60HZ TRANSFOMRER 1S7F
SQUARE D CLASS 9001 KEYED SELECTOR SWITCH KA-1 SER. G
SQUARE D 600V 335A 3-POLE POWER DISTRIBUTION BLOCK 9080 LBA364108
SQUARE D 9025 BCW-43 SERIES B 600 VOLT 10 AMP TEMPERATURE SWITCH, NEW
SQUARE D MTX848 PANELBOARD CABLE TROUGH, 8-5/8"W X 48"L X 5"D , NIB
SQUARE D SY/MAX MODEL 300 PROCESSOR MODULE 8020 SCP-323 S30606-532
SQUARE D 50/60HZ CLASS X2 INDUSTRIAL CONTROL TRANSFORMER 9070T500D1
SQUARE D 150A THERMAL-MAGNETI?C CIRCUIT BREAKER KCP34150MT SER-2
SQUARE D 1.5-75PSIG PRESSURE SWITCH 9012 GDW-4 SER C *NEW*
SQUARE D 15A 600VAC SNAP SWITCH AO-6 *LOT OF 2*
SQUARE D LIMIT SWITCH HEAD 9007K SER. A *NEW*
SQUARE D 220/240V 50/60HZ MAGNET COIL, 1707-S1-T24, NIB
SQUARE D 15A 600VAC SNAP SWITCH AO-6 *LOT OF 2*
SQUARE D LIMIT SWITCH HEAD 9007K SER. A *NEW*
SQUARE D 220/240V 50/60HZ MAGNET COIL, 1707-S1-T24, NIB
SQUARE D 3-POLE 3A MAG-GARD INSTANTANEOUS TRIP CIRCUIT BREAKER FAL3600311M
SQUARE D RED PUSH BUTTON 9001 KA-2 SER G
SQUARE D 240VAC 80A 3-POLE CIRCUIT BREAKER QOU380 *NEW*
SQUARE-D * MAGNET COIL NIB * 4491-S1-W27
SQUARE D 0.1-60 SECOND TIMING RELAY XTE1 WITH BASE XM0 4D
SQUARE D POWER DISTRIBUTION BLOCK COVER 9080 LB51 *NEW, PACK OF 5*
SQUARE D 1.5KVA DRY TYPE SINGLE PHASE 1.5S1F TRANSFORMER SFA H-1
SQUARE D DOOR CLOSING MECHANISM, 9423M8 SERIES A *NEW*
SQUARE D SERVICE FITTING, G2-BA *NEW*
SQUARE D 60A 250/600V S2 CIRCUIT BREAKER FHL36060
SQUARE D SINGLE POLE FUSE HOLDER 9080 / PF-1 SER-B LOT OF 4
SQUARE D 230/460V TO 115V STEP-DOWN TRANSFORMER DISCONNECT SK500G1
SQUARE D TYPE 3R 50/60HZ 2240/440 TO 110/220V 5KVA ST TRANSFORMER 5S67F
SQUARE D 3AMP MAG-GARD CIRCUIT BREAKER FAL3600311M
TORRINGTON 50MM I.D. 65MM O.D. NEEDLE ROLLER BEARING, HJ-324120 *NEW*
SQUARE D 110/120VAC COIL NEMA SIZE 00 3-POLE STARTER 8536 SA012
SQUARE D ELBOW 45 DEGREE 4X4 NIB
SQUARE D 600V 400A 2 POLE MOLDED CASE CIRCUIT BREAKER, LA26400AB
SQUARE D 60A 600VAC SAFETY SWITCH SER.F05 HU6S2AWK 99246
SQUARE D 350A 600V 3 POLE POWER DISTRIBUTION BLOCK LBC363206 *NEW*
SQUARE D * MAGNETIC COIL * 2936 S1 C30A
SQUARE D 10A 2-POLE 120/240VAC CIRCUIT BREAKER NE-2652
SQUARE D 12VDC COIL MINIATURE GENERAL PURPOSE RELAY RSD4V51 *NEW*
SQUARE D 400A PBQA FUSIBLE SWITCH INTERLOCK HARDWARE KIT PBQA-INTKIT *NEW*
SQUARE D 3-POLE 40A DISCONNECT SWITCH 9421 V2 SER. A *NEW*
SQUARE-D * DOUBLE BLOCK * 9001KA-1 SER G
SQUARE D MULTI 9 C60 4A 1-POLE C-CURVE CIRCUIT BREAKER NIB 24428 100565
SQUARE-D * MAGNET COIL NIB * 2936 S1 C27A
SQUARE D LIMIT SWITCH ARM W/ ROLLER 9007LA7 2441C41G1 *NEW*
SQUARE D SORGEL CLASS AA 60HZ 3PH 480 TO 480/277 30KVA TRANSFORMER 30T76H
SQUARE D 400A MOULDED CASE SWITCH SLAL3000M SERIES 4
SQUARE D 3-POLE 30A 600VAC CIRCUIT BREAKER FAL36030-15M
SQUARE D EQ5300 SERIES 1 52045-034-50 MEMPACK, NEW
SQUARE D 225T3H SORGEL INSULATED TRANSFORMER 225 KVA
SQUARE D 225A, 240VAC/48VDC MAX, 4W, 3-PHASE PANELBOARD NQOD442L225CU
SQUARE D PADLOCK ATTACHMENT 9001K4 *NEW*
SQUARE D 60AMP TYPE S2 CIRCUIT BREAKER FHP36060
EMECANIQUE SQUARE D 1HP/0.75KW VARIABLE SPEED AC DRIVE ATV18U18N4
SQUARE D CIRCUIT BREAKER 1P 10A 277VAC NIB MG 24432 34620
SQUARE D TYPE 3R, 3S &12 ENCL. SER. E1 PANELBOARD W/ BREAKERS, BROKEN HANDLE
SQUARE D B6.25 THERMAL OVERLOAD HEATING ELEMENT, LOT OF 3, NEW IN BAG
SQUARE D 9007CO54P5 SERIES A 24-120 VDC LIMIT SWITCH, NEW
SQUARE D SCHNEIDER ELECTRIC 1-PHASE 1KVA 60HZ TRANSFOMRER 1S7F
SQUARE D CLASS 9001 KEYED SELECTOR SWITCH KA-1 SER. G
SQUARE D 600V 335A 3-POLE POWER DISTRIBUTION BLOCK 9080 LBA364108
SQUARE D 9025 BCW-43 SERIES B 600 VOLT 10 AMP TEMPERATURE SWITCH, NEW
SQUARE D MTX848 PANELBOARD CABLE TROUGH, 8-5/8"W X 48"L X 5"D , NIB
SQUARE D SY/MAX MODEL 300 PROCESSOR MODULE 8020 SCP-323 S30606-532
SQUARE D 50/60HZ CLASS X2 INDUSTRIAL CONTROL TRANSFORMER 9070T500D1
SQUARE D 150A THERMAL-MAGNETI?C CIRCUIT BREAKER KCP34150MT SER-2
SQUARE D 1.5-75PSIG PRESSURE SWITCH 9012 GDW-4 SER C *NEW*
SQUARE D 15A 600VAC SNAP SWITCH AO-6 *LOT OF 2*
SQUARE D LIMIT SWITCH HEAD 9007K SER. A *NEW*
SQUARE D 220/240V 50/60HZ MAGNET COIL, 1707-S1-T24, NIB
SQUARE D 15A 600VAC SNAP SWITCH AO-6 *LOT OF 2*
SQUARE D LIMIT SWITCH HEAD 9007K SER. A *NEW*
SQUARE D 220/240V 50/60HZ MAGNET COIL, 1707-S1-T24, NIB
SQUARE D 3-POLE 3A MAG-GARD INSTANTANEOUS TRIP CIRCUIT BREAKER FAL3600311M
SQUARE D RED PUSH BUTTON 9001 KA-2 SER G
SQUARE D 240VAC 80A 3-POLE CIRCUIT BREAKER QOU380 *NEW*
SQUARE-D * MAGNET COIL NIB * 4491-S1-W27
SQUARE D 0.1-60 SECOND TIMING RELAY XTE1 WITH BASE XM0 4D