1．常數(shù)及類型
    在S7-200的指令中可以運(yùn)用字節(jié)、

字、雙字類型的常數(shù)，常數(shù)的類型可指

定為十進(jìn)制、
十六進(jìn)制（6#7AB4）、二進(jìn)制

（2#10001100）或ASCII字符

（‘SIMATIC’）。PLC不支撐數(shù)據(jù)類型

的處理和查看，因而在有些指令隱含規(guī)

矩字符類型的條件下，有必要留心輸入

數(shù)據(jù)的格式。
2．?dāng)?shù)據(jù)存貯器的尋址
（1）數(shù)據(jù)地址的通常格式  數(shù)據(jù)地址

通常由二個(gè)有些構(gòu)成，格式為：Aal.a2

。其間：A區(qū)域代碼（I，Q，M，SM，V

），al字節(jié)首址，a2位地址（0~7）。

例如I10.1標(biāo)明該數(shù)據(jù)在I存儲(chǔ)區(qū)10號(hào)地

址的第1位。
（2）數(shù)據(jù)類型符的運(yùn)用  在運(yùn)用以字

節(jié)、字或雙字類型的數(shù)據(jù)時(shí)，除非所用

指令已隱含有規(guī)矩的類型外，通常都應(yīng)

運(yùn)用數(shù)據(jù)類型符來指明所取數(shù)據(jù)的類型

。數(shù)據(jù)類型符共有三個(gè)，即B（字節(jié)）

，W（字）和D（雙字），它的方位應(yīng)緊

跟在數(shù)據(jù)區(qū)域地址符后邊。例如對(duì)變量

存貯器有VBl00、VW100、VDl00。同一

個(gè)地址，在運(yùn)用不一樣的數(shù)據(jù)類型后，

所取出數(shù)據(jù)占用的內(nèi)存量是不一樣的。
3．?dāng)?shù)據(jù)政策的尋址
數(shù)據(jù)政策的地址底子格式為：An，其間

A為該數(shù)據(jù)政策地址的區(qū)域地址。A共有

6種：T（定時(shí)器），C（計(jì)數(shù)器），HC

（高速計(jì)數(shù)器），AC（累加器），AIW

（仿照量輸入），AQW（仿照量輸出）

。
S7-200 CPU存儲(chǔ)器計(jì)劃和特性如表所示

。
表  S7-200 CPU存儲(chǔ)器計(jì)劃和特性表1

．溫度
plc懇求環(huán)境溫度在0~55℃，設(shè)備

時(shí)不能放在發(fā)熱量大的元件下面，附近

通風(fēng)散熱的空間應(yīng)滿足大，底子單元和

拓展單元之間要有30mm以上距離；開關(guān)

柜上、下部應(yīng)有通風(fēng)的百葉窗，避免太

陽(yáng)光直接照射；假設(shè)周圍環(huán)境逾越55℃

，要設(shè)備電風(fēng)扇強(qiáng)逼通風(fēng)。

BAILEY IEPAS01 1
BAILEY IEPAS02 1
BAILEY IEPAS01 4
BAILEY IIMCP01 1
BAILEY INICT03A 1
BAILEY IMSPM01 1
BAILEY INICT01 1
BAILEY INICT03A 1
BAILEY INICT03A 1
BAILEY IMMPI01 1
BAILEY IPFLD24 4
BAILEY IPSYS01 2
BAILEY IPSYS01 2
BAILEY IPSYS01 1
BAILEY IPSYS01 4
BAILEY IMCIS02 17
BAILEY IMMPI01 1
BAILEY IMDS003 1
BAILEY IMDSI02 13
BAILEY IMMFP01 9
BAILEY IMMFP03 1
BAILEY IMDS002 12
BAILEY IMMFP03 1
BAILEY IMMFP12 2
BAUMER FHDK 14P5101/S35A 3
BAUMER OADM 20I6572/S14F 1
BAUMULLER BUR622-16-2 1
BAUTZ E642B-MGB 1
BEI H25E-F1-SS-10 1
BEI H38D-1800-ABZC-8830-LED-SC-UL 1
BEIJER QSI QTERM-K65 1
BENDER 9604-1121 1
BENTLEY 3500/50M 1
BENTLEY 3500/20 1
BENTLEY 3500/33 1
BENTLY 167699-02 1
BENTLY 3500/20 1
BENTLY 167699-02 1
BENTLY 3500/42M（176449-02） 1
BENTLY 167699-02 1
BENTLY 3300/16-14-01-03-00-00-01 2
Bently 128229-01 1
BENTLY NEVADA 3500/15 3
BENTLY NEVADA 3500/05-01-01-00-00-00 2
BENTLY NEVADA 3500/92 1
BENTLY NEVADA 3500 26
BENTLY NEVADA 3500/20 2
BENTLY NEVADA 3500 1
BENTLY NEVADA 125760-01 2
BENTLY NEVADA 125768-01 2
BENTLY NEVADA 125840-01 4
BENTLY NEVADA 133323-01 2
BERGER LAHR WPM311.03401 1
BERGHOF CDIO 16/16-0,5 1
BERGHOF CDIO 16/16-0,5 1
BERGHOF QDIO 16/16-0,5 1
BERNECKER 3IF260.60-1 1
BERTHOLD LB 440-M 1
BIOPTICS INC 2010-00005 2
BOARD T11312 NAS-497E F3N3K0057-C3 1
BOSCH SF-A4.0125.015-14.057 1
BOSCH SE110 0608830109 1
BOSCH LT303 0608750084 1
BOSCH LTE 12 0.6 KVA Typ: 0608750040 1
BOSCH LT303 0608750084 1
BOSCH IXO 3.6V 3 1
BRAD HARRISON 803P801 1
BUSSMANN FWC-32A10F 1
BUSSMANN 25NH00 G-690 2
BUSSMANN 50NH00 G-690 2
CANON 8100-P-R 1
CANON DDR2-1A 1
CASH E-55 1
CISCO N7K-M148GT-11L 1
CISCO ASSY#68-0208-03B0/73-1669-06B0 1
CISCO N7K-M148GT-11L 1
CKD LYX-0507 1
CKD LYX-0507 1
COGNEX 800-5745-1 1
COGNEX 800-5746-1 1
Cognex 800-5715-1 REV D 1
COMAIR ROTRON FE12B3 5
COMPLEE CP48 450V 8
CONTEC ACO/DCO-8(98) 1
COOPER P3798102-00010 CN-UIM2 1
CSI 7270-C 1
CTC AMM-4000-1 2
CTC ATM-4505-0 1
CTI 2500-C200 1
CTI 2500-C200 1
CURRENTCLIL MFO-40CT 1
CUTLER HAMMER 1755T-PMPP-1700 1
CUTLER HAMMER 87-01368-01 1
CUTLER-HAMMER 1775T-PMPP-1700 1
cutler-hammer E111A12X3N 3
Cutler-Hammer HLDB3600FT33W 1
CUTLER-HAMMER 1775T-PMPS-1700 1
CYONICS 2114B-30SLT 1
D/A DCU-RM2 1
DAC 41072001 1
DALLAS DS1230Y-150+ 2
DANAHER MOTION XMP-SYNQNET-PCI-RJ 1
DANGER 2214-30SLQTA 1
DANGER 2214-30SLOTT 1
DATAPLATE PMC720 1
DIGIFAS DIGIFAS7108 1
DIGIFAS DIGIFAS7116 1
DIGIFAS DIGIFAS7105 1
DIGIFAS DIGIFAS7116 1
DOBOTECH DQM CARD REL.1.0  0310071 1
DOBOTECH DQM CARD REL.1.0  0310072 1
DOUCETTE SLHE1-1/2K NE-1001 1
DRIVE PAK 311-435.7 1
Dunkermotoren GR63X55 2
Dunkermotoren GR53X58 1
DURAG D-UG 660-20 1
DYNAPAR HR62506000001 1
E+H 319083-0200 1
EASON 900 1
EBMPAPST 4414 F/12 3
ELAU C200/10/1/1/1/00 1
ELAU C400/10/1/1/00 1
ELAU MC-4/11/22/400 1
ELAU MC-4/11/03/400 1
ELAU MC-4/11/03/400 1
ELAU MC-4/11/03/400 1
ELAU MC-4/11/03/400 1
ELAU MC-4/11/01/400 1
ELAU PMC-2/11/08/000/00/03/11/00/0K 1
ELAU PACDRIVE C600/10/1/1/1/00 1
ELTEX KNH34 3
EMERSON KJ2003X1-BA2 1
EMERSON FX-455 1
ENTERASYS P0973BK 1
ENTERASYS A2H124-24 1
ENTERASYS A2H124-24FX 1
ENTERASYS C2RPS-CHAS2 1
ENTERASYS C2RPS-PSM 2
EPSON SKP326-2 1
ERGO 5600膠水 2
ERGO 5600膠水 1
Ericsson ELU-D3 1
ESTIC ENRZ-TU013-S 1
ETRI 98XH 1
FANAL DSL7-10 1
FANUC HMI-CAB-C84/A 2
Fanuc A860-0301-T002 1
FANUC A20B-2002-0040/07DR 1
FANUC A06B-0116-B203#0100 1
FANUC A06B-6077-H106 1
FANUC A06B-6079-H106 1
FANUC A06B-6079-H208 2
FANUC A06B-6089-H104 1
FANUC A06B-6114-H106 1
FANUC A06B-6120-H075 1
FANUC A16B-2203-0073/02A 1
FANUC A90L-0001-0422#50(9WF0624H7D05) 1
FANUC A860-0302-T001 1
FANUC A860-0360-T201 2
FANUC A860-0326-T103 1
FANUC A860-0315-T101 1
FANUC A20B-2002-0310 3
FANUC A230-0604-X003 2
FANUC A20B-2902-0290/08C 1
FANUC A20B-2901-0763/02A 1
FANUC A20B-2901-066 1
FESTO ECEA-1616-R24 1
FESTO CPV10-GE-DN3-8 1
FIFE CORP 534738-001 1
FIREYE 65UV5-1000 2
FIREYE EP160 1
FIREYE EUVS4 1
FIREYE 45UV5 1
FISHER CL6821X1-A5 1
FISHER-ROSEMOUNT 01984-0605-0001 1
FORCE CPU-2CE/16 1
FORCE CPCI-680 2
FORCE PMC234 1
FORCE PMC244FP 1
FORCE COMPUTER SYS68K CPU-30BE/16 C8 1
FOXBORO P0961BD-GW30B 4
FOXBORO P0961BC-CP40B 1
FOXBORO P0961CA 1
FOXBORO P0500RY 11
FOXBORO P0961CA 1
FOXBORO P0926TP 1
FOXBORO P0960JA-CP40 1
FOXBORO P0928AY 1
FOXBORO P0960JA-CP40 1
FOXBORO P0950CA 9
FOXBORO P0960AH 6
FOXBORO P0960HA 5
FOXBORO P0960JA-CP40 1
FOXBORO P0500RY 20
FOXBORO P0961CA 2
FOXBORO P0916PW P0916SG 1
FOXBORO P0926CC 12
FOXBORO P0926AH-B 4
FOXBORO P0924AW 1
FOXBORO P0924AU 1
FOXBORO P0922YU 1
FOXBORO P0926HW 2
FOXBORO P0916PW 4
FOXBORO P0916NK 1
FOXBORO P0916NG 3
FOXBORO P0916JY 1
FOXBORO P0916JY 1
FOXBORO FBI10E 1
FOXBORO P0926TM 4
FOXBORO E69F-BI2-S 1
FOXBORO P0926KQ 2
FOXBORO 14A-FR 1
FOXBORO E69F-BI2 8
FOXBORO E69F-BI2 1
Foxboro E69F-BI2 1
FOXBORO P0926JM 1
FOXBORO E69F-TI2-JRS 1
FOXBORO P0926KP 4
FOXBORO P0926KN 4
FOXBORO P0926KL 4
FOXBORO P0926KK 2
FOXBORO P0926JM 7
FOXBORO FBI10E 1
FOXBORO PO916JS 3
FOXBORO 130M-N4 1
FOXBORO P0400ZG 3
FOXBORO P0500JX 3
FOXBORO P0500RG 3
FOXBORO C0136-HZ 11
FOXBORO PO961BC/ CP40B 1
FOXBORO PO961BC/ CP40B 1