PLC產(chǎn)品,都采用梯形圖編程。在用編程器向PLC輸入程序時,一般簡易編程器都采用編碼表輸入,大型編程器也可用梯形圖直接輸入。在眾多的PLC產(chǎn)品中,由于制造廠家不同,其指令系統(tǒng)的表示方法和語句表中的助記符也不盡相同,但原理是相同的。在本書中我們以FANUC-PMC-L為例,對適用于數(shù)控機(jī)床控制的PLC指令作一介紹。在FANUC系列的PLC中,規(guī)格型號不同時,只是功能指令的數(shù)目有所不同,如北京機(jī)床研究所與FANUC公司合作開發(fā)的FANUC-BESK PLC-B功能指令23條,除此以外,指令系統(tǒng)是一樣的。
在FANUC-PMC-L中有兩種指令:基本指令和功能指令。當(dāng)設(shè)計順序程序時,使用多的是基本指令,基本指令共12條。功能指令便于機(jī)床特殊運(yùn)行控制的編程,功能指令有35條。
在基本指令和功能指令執(zhí)行中,用一個堆棧寄存器暫存邏輯操作的中間結(jié)果,堆棧寄存器有9位(如圖1所示),按*后出、后進(jìn)先出的原理工作。當(dāng)前操作結(jié)果壓入時,堆棧各原狀態(tài)全部左移一位;相反地取出操作結(jié)果時堆棧全部右移一位,后壓入的信號首先恢復(fù)讀出。
BBC he5g 223 d2b
ABB gjr2370800r0200 88fn02b-e
BBC heie 420318r2 XT 375
ABB gjr2312200r1010 88vk01a-e
FRONT LEFT SHOCK ABSORBER FRONT SACHS 313 283
Shock Absorber for suspension/damper front Axle Sachs 313 283
ABB hesg 447388
Cable, Manual Transmission for Gearbox Butcher 3150093
SACHS 313 283
Shock Absorber SACHS 313 283
MonROE G8801
ASEA BROWN BOVERI IWX-161-A-1
AXLE SHOCK ABSORBERS PAIR STRUTS SHOCKERS KYB OE QUALITY 334839
Shock Absorbers Excel G Front Axle Right-KYB 334838
Shock Absorbers Excel G Front Axle Left-KYB 334841
Shock Absorber for suspension/damper front axle Monroe g8802
Handlebar, suspension for suspension Front Axle Butcher
Shock Absorber for suspension/damper front axle Monroe g8801
Oil Pressure Sender Unit FOR LAND ROVER DISCOVERY I 2.0 89->98 20T4HG
Radiator Cap FOR MAZDA 818
Shock Absorber-NK 652532392
Handlebar, suspension for suspension Front Axle Butcher
Arm, Windscreen cleaning for windscreen cleaning Rear Axle Butcher 2190287
Shock Absorber for suspension/damper front axle Monroe 742081sp
SACHS Shock Absorber [313 283]
Wash Water Pump, Window Cleaning MAPCO 90656
Tie Rod MAPCO 54649
TRW JGM6078T
Handlebar, Suspension MAPCO 52678
Shock Absorber for suspension/damper front suspension KYB 334841
Wylex SK Stoz ABB B20 S213
BBC Brown Boveri M5AX Servo Amp. HE 810427-318 M5AX-E
Shock Absorber for suspension/damper front suspension KYB 334838
Shock Absorber for suspension/damper front suspension KYB 334839
KAYABA 334839
FRONT SHOCK ABSORBERS PAIR SHOCKER X2 PCS. KYB334838
KYB Front Left Shock Absorber fit FOCUS C-MAX FOCUS C-MAX 334839
FRONT SHOCK ABSORBERS PAIR SHOCKER X2 PCS. KYB334841
Wash Water Pump, Headlight Cleaning Front Axle Butcher 2220044
Handlebar, Suspension MAPCO 59058
Handlebar, Suspension MAPCO 59059
Storage, Wheel Bearing Housing for suspension Rear Axle Butcher
Sensor, camshaft position for mixture preparation Butcher 0903177
Track Rod End for steering Front Axle Butcher
ABB Stotz BBC S-213-K-50A
ABB Stotz Kontakt BBC Brown Boveri S181K10A
Spurstangenkopf für Lenkung Vorderachse METZGER
G8802
MonROE 742081SP
Reparatursatz, Spurstange MAPCO 53636
Nockenwellenposition für Gemischaufbereitung METZGER 0903158
Spurstange MAPCO 54650
MonROE G8802
Front Right Shock Absorber JAPANPARTS MM-00231
Umlenk-/Führungsrolle, Zahnriemen für Riementrieb SKF VKM 21130
Federbeinstützlager MAPCO 37694
Axialgelenk, Spurstange MAPCO 52673
BELAGSATZ HA OPEL AS BOSCH 0 986 494 435
Keilrippenriemen MAPCO 262285
MonROE 742080SP
Spurstangenkopf MAPCO 54636
Sensor, Innenraumtemperatur für Klimaanlage METZGER 0905441
Filter, Innenraumluft MAPCO 65013
Spurstangenkopf - NK 5031541
METZGER
ABB/BBC HEIR 449840 R1 CIRCUIT BOARD #716850G
ABB BBC VERITRON Stromricht-Ger?t GN 6800037
ABB BBC 0.6000.0004-0200
ABB, Brown Boveri (BBC)| XT 038B
ABB, Brown Boveri (BBC)| GW 61
ABB, Brown Boveri (BBC)| NFLN-01
ABB, Brown Boveri (BBC)| GTU-111
ABB BBC 07ZE40E or GJR2-268-800-R2
ABB, Brown Boveri (BBC)| PT 5501a
ABB, Brown Boveri (BBC)| ED 1625
ABB, Brown Boveri (BBC)| ED 0936
ABB, Brown Boveri (BBC)| UN 0503a-P
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