2．湿度
下面用一个简单的例子来进一步说明plc的扫描工作过程。图1-6给出了plc的外部接线图和梯形图，起动按钮sb1停止按钮sb2和热继电器fr的常开触点分别接在编号为x0~x2的plc的输入端，交流接触器km的线圈接在编号为y0的plc的输出端。图1-6b是这4个输入／输出变量对应的i／o映像寄存器，图l-6c是plc的梯形图，它与图1-3所示的继电器电路的功能相同。但是应注意，梯形图是一种软件，是plc图形化的程序。图中的x0等是梯形图中的编程元件，x0~-x2是输入继电器，y0是输出继电器。梯形图中的编程元件x0与接在输入端子x0的sbl的常开触点和输入映像寄存器x0相对应，编程元件y0与输出映像寄存器y0和接在输出端子y0的plc内部的输出电路相对应。
可编程序控制器发展的多样化体现在3个方面：产品类型、编程语言和应用领域。
foxboro 2ax+alm-br
l100-015nfu
fr-f740-04320-na
成绩评价机制。应该明确成绩评价不是教学行为的终目的，成绩评价应作为激励学生学习的一种方法，成绩评价应做到及时、公正，具有可操作性。1、理论成绩评定包括笔试成绩、平时成绩和实验成绩，笔试成绩通过开卷或闭卷方式，考核了学生对plc基本知识的掌握程度；平时成绩通过平时独立完成作业的质量、上课出勤、课堂上解决问题的能力及创新方法等来评定；2、实验实训成绩评价应能体现出竞争机制，根据不同的任务要求分两种情况：，保证完成质量的前提下，根据完成速度评定分数；第二，保证统一时间的前提下，根据完成质量评定分数。教师根据完成质量或速度只对每个团队进行分数评定，团队每个成员的分数则依据教师给定分数通过本团队评议得分，这样促进团队内每个成员的积极性与主动性，同时培养学生的团队意识。
２)机型统一，其功能和使用方法类似，有利于技术力量的培训和技术水平的提高。
beck communication controller bc660 bc660-web
siemens s5 6es5 947-3ua21 6es5947-3ua21 stand : 10
keyence ppz-g51cbr photoelectric 10-30vdc receiver
ha866 honeywell servoregler servo axis 622-1030 kl?ckner moeller
lot of 2 timken lm501310 bearing tapered roller 2.891 x .58 inch
spi 31-020-1, correx gram gage w/ round tip
honeywell 08348100 measurex pbs detector assembly module ser b d472143
hisco 17341 2vrg-204 set 2x2-1/2in rubber pump liner d400423
kinematica polytron pt 1300 d control unit
square d 2510-fg-71p fhp manual starter with auto off hand selector - new in box
pp614 frequenzumrichter control techniques dinverter din3380220b 2,2kw
honeywell skinner 703n24n3c solenoid valve with deltech timer
liteon 4034197 ac adapter pe-1170-1sa1 5vdc 3.0a 15w
foxboro 43ap-fa72n 3-15psi pneumatic controller d533018
fanuc ge power supply ic697pwr710b a20b-1002-0680 90-70
abb bbc veritron gcb 0322 - corriente richter
abb kent-taylor micro-scan 200 201rb32002c controller
pp288 berger lahr d55051 rs19
wavetek 7570a attenuator
abb dsqc-509 panel unit, abb dsqc 509 panel unit, 3hac5687-1,
emerson dxe-455w control techniques 3000rpm 1.95hp servo motor d504419
kniel system-electronic cmp 0810 power supply card asml 4022.436.48921
ritto-einbaubriefkasten für 2 wohneinheiten
cognex 800-9026-1r ckr-200-lenskit lens kit
m124 aeg modicon visualisierung vip 101 101248280 e-11
new eaton vickers hydraulic solenoid valve 02-109685 dg4v-3s-6c-m-fw-b5-60
indramat ecodrive dkc03.1-040-7-fw ( dkc0310407fw )
fisher 15a6655x012 1-1/2 in control valve seat ring d531463
lam research focus ring 055298 ace bs33-390
siemens s7 6gk7243-2ax00-0xa0 // 6gk7 243-2ax00-0xa0
camco varipak 600186
pp705 siemens analog output 6es5470-7lc12 6es5 470-7lc12 e7
fuji electric magnetic contactor sc-5n
amat 0140-11436 harness assy, conductivity 1/0 breakout, cmp
82x24x24 in steel free standing electrical enclosure d453477
lam research 716-011563-166 6 domed wafer clamp with pins
ritto door speaker 1 5760
ge fanuc a06b-0147-b188 #7076 servo motor
pp578 panel beijer mac40+ mac 40 + 00760e
1 rosemount 8721 magnetic flowtube 8732e hart transmitter b17 (2081)
warranty oriental motor control pack ss21m-sssd ss21msssd 1.5a 100v
measurex 05371800 08564302 buffered serial controller board rev f d516813
mrc materials research 884-54-000 process control interface pos. e eclipse
ritto 6906.00 enchufe múltiple solo marcos
markem 33626ba safety switch 33626.ba
m841 siemens simatic 6es5 450-6aa12 6es5450-6aa12 e-1
dayton time delay relay 5yz85n 120v 1-60 sec 10a in box
setra model 264 2641025wd11t1c 24 vdc pressure transducer sensor w/ warranty
conveyor components rs 2l safety stop switch 125/250/480v-ac 2hp 20a amp d522950
hitachi s2-84410 smc air cylinder cgd1bn20-30-h7a1 qty5
b r pannello di prodotti premere il pulsante modulo 4e0011. 01-090 rev.01.00
newport electronics 200as-4
tokyo electron p-8 qmc3 board 3281-001184-17
pilz pnoz x10.1 id no 774749 nuovo conf. orig.
fanuc a20b-2901-0985 /03a control module
w701 eisenmann steuerkarte fg fts technik b0001034
lot (4) 1/4 npt crane 800# fs globe valve b3644xut*002 new a18 (2076)
mitsubishi: melsec-q qh42p input/output unit
armstrong b1673-8 bucket/seat 1/4 orifice kit pca 215 trap d519135
schroff seg 115 100-240v-ac 15v-dc 8.4a amp power supply d496164
opto 22 i/o rack g4pb4r
allen bradley series 8200 cnc interface design manual - publication 8200-4.1
ku808 siemens siwarex kh 7mh4 322-1az00 + k1b weighing system max 2to
north safety a352 12 latex booties size large lot of 6
disco dars001--f sp1994-1200 table (wafer) assembly 401680
bailey nmfc03 network 90 multifuction controller d520565
esdp 30 edwards esdp 30 a dry scroll pump esdp30a tested not as-is
pepperl + fuchs nbn30-u1-e0
marposs t25 touch probe w/ e86 and w/ v-50 cat 50 tool holder
mu105 schenck fsm v006
allen bradley 1769-of2 ser b rev 2 f/w rev 2.1 2channel analog output module
amat 0680-02000, cb mag therm, 1p
atlas copco 4230 2195 10 4230219510 10m extension cable d534357
berkeley process control usa2-11-28-ur multi-axis servo pump amp
rexroth eco drive dkcxx.3-014-7
rexnord 7300225 7300225 bore 7/8
tu164 aeg dea116 dea 116 244610 6365-042244610 rev 10
lambda lcs-c-02 regulated power supply0-18vdc output
ren-wil inc. elias munoz 'walking in the rain' ol931 20 x 30 x 1.5 oil painting
metso iop371 181500 rev b/b1 i/o bus extender unit module d525959
parker veriflo 3800-01034 manual 3-way valve 95930w3pxfsmmf lot of 2
siedle cec 611-0 videocamera ccd a colori per installazione esterna
siemens 6av6 545-0bc15-2ax0 operator interface touch panel 1p6av6-545-0bc15-2ax0
m179 yaskawa jancd-mi003 motoman rn4308-7x3-1-12
crouse hinds conveyor control switch afu0333 11 m83
lg ls operator panel le-100 le100
general electric ge sr469-p5-hi-a20 multilin motor management relay d520124
dcg-200z eni dc24m-z141300110a rf generator master amat 0190-07964 refurbished
ritto 1 7665/20 videoportero plata
parker d1vw004cnjdlmj5 valve
pp146 relaismodul phoenix contact umk-8 rm24 mzp a 001 49 16
health o meter model 322 pediatric scale balance beam with platform
asyst 9701-1525-01 crossing automation assembly ag switch
flow control components 10 in 150 stainless flanged wedge gate valve d498778
stec sec-4400mo-suc mass flow controller sec-4400 200 sccm nf3
siedle be 611-3/1-0 sm modulo di lettera pieghevole nuovo confezione originale
browning 097128 chain
tu956 tranceiver phoenix contact rad-ism-2400-data-bd-bus 2867872
ge fanuc micro programmable controller *new* ic620mdr014
amat 3060-01286 ball and socket 6mm 402358
atlas copco pf3109-c-hw tensor 8-9 nutrunner controller unit 90-240v-ac d534969
cosel mmb75u-2 power suppy reseller lot of 2
siemens 6es5 430-7la12 // 6es5430-7la12 e stand : 03
yaskawa sgmg-30awaaf ac servo motor 2900w 23.8amp 1500rpm
oriental motor c5347-9212m 2-phase stepping motor vexta
siemens 6ds1916-8aa 6ds1 916-8aa e stand: 2
pepperl+fuchs nbb20-l2m-e2-v1 187534 inductive sensor
pp1111 power supply telemecanique msp52d401m
reliance 221-l-2 coil 230v
gefran pz-34-s-050 f004444 rectilinear displacement transducer ! in box !
ge v122 5k213qpl4ja8a 7.5hp 230/460v-ac l213hp10 triclad vertical motor d516428
goodyear 4/5v2360 torque team wedge matchmaker 236in 2-3/4in v-belt d388723
minarik speed controller s151ud4
parker waterman inline flow control valve 1308l-4f new old stock
w39 weidmüller 802-966 relais 24v dc m 0,1a sicherung
lot of 5 delta tfb0412ehn tfb0412ehn-4k29 12v .87a 4 pin chassis fan u10 e
aro controls micro 2x16 iii 10t128p flash
adept 10332-11000 manual control iii operator rev d d508284
hitachi ht94218a pm1 pcb card ver. i1
siedle tm 612-1 w module de clé 1 participant neuf emballage d'origine
electro numerics 385rd-p350 digital meter
bo44 cisco 800-02598-04 atm oc3/stm1 enhanced atm
dell e176fpf cc639 0cc639 17 lcd monitor w/ cables qq1 e
amat 0021-08157 pad gas panel door latch 300m
flowserve 979389-001-q1 mechanical stainless pump seal d523575
panasonic adkb400bpfada ac servo drive
allen-bradley industria computer pc 6180-aegbfbczgbcz a
aleen bradley 845d-sjdz25adcn1 series a encoder optical absolute
tu319 profibus adapter abb oy 64379232 rpba-01 rpba01 rev g
wr white rodgers 1127-2 hot water control new
20261058 board
bently nevada 330878-90-00 3300 xl 50mm proximitor sensor d526244
amat applied materials 9090-00491 network module
telekom doorline m03 für türsprechanlage
turck bi5-g18sk-ap6x2 proximity sensor
pp1296 einspeisemodul bernecker rainer b&r x20ps2100 x20 ps 2100 ovp
laboratory dessicator with beads single piece
warranty omron r88d-ua20ha ac servo drive driver
clyde bergemann hd.bsc.d.2insc.1/05 2-1/2 in poppet valve assembly d532366
nikon 4s064-630 nsr series controller iu-iop1
tippkemper - luce armadio ild-201-s/e s39)
browning bushing split taper 3x482
w751 atlas copco elektronikon 1900059826 kompressor controller module
nhbb fulcrum bearing bb-710-6 in box
warranty br-automation 8msa3m.r0-32 rev d0 ervo motor b&r 8msa3m
cutler hammer 585-5 440v-ac coil d540106
reliance motion control 240-035-0765 stepping motor 112-144
siedle ka/wg 950-0/5-40 outside camera + siedle znf 950-0 power cable-foot
rika kogyo c100fj02-v-gr rkc temp control 0-400 c
dg415 siemens simatic-steuersytem p arb 11-p2d2501-2a b21b ovp
pt coupler , hose 4'' shank alum. surplus
yaskawa servopack sgdb-60vdy6 ( sgdb60vdy6 )
dossert xlw200-4n4-aa aluminum mechanical terminal connector d523168
btu engineering video interface board 3161524 eprom v2.1
beckhoff kl2124 kl 2124 abrazadera nuevo
baldor electric motor m3112 3/4 hp, 1725 rpm