S7-200是西德西門子公司的產(chǎn)品之一，其注冊(cè)商標(biāo)為SIMATIC。
1．西門子公司的產(chǎn)品*早是1975年投放市場(chǎng)的SIMATIC S3，它實(shí)際上是帶有簡(jiǎn)單操作接口的二進(jìn)制控制器；
2．1979年，S3系統(tǒng)被SIMATIC S5所取代，該系統(tǒng)廣泛地使用了微處理器；6SN1114-0AA02-0AA0
3．20世紀(jì)80年代初，S5系統(tǒng)進(jìn)一步升級(jí)——U系列PLC，較常用機(jī)型：S5-90U、95U、100U、115U、135U、155U
4．1994年4月，S7系列誕生，它具有更際化、更高性能等級(jí)、安裝空間更小、更良好的WINDOWS用戶界面等優(yōu)勢(shì)，其機(jī)型為：S7-200、300、400
5．1996年，在過(guò)程控制領(lǐng)域，西門子公司又提出PCS7（過(guò)程控制系統(tǒng)7）的概念，將其優(yōu)勢(shì)的WINCC（與WINDOWS兼容的操作界面）、PROFIBUS（工業(yè)現(xiàn)場(chǎng)總線）、COROS（監(jiān)控系統(tǒng)）、SINEC（西門子工業(yè)網(wǎng)絡(luò)）及控調(diào)技術(shù)溶為一體
6．現(xiàn)在，西門子公司又提出TIA（Totally Integrated Automation）概念，即全集成自動(dòng)化系統(tǒng)，將PLC技術(shù)溶于全部自動(dòng)化領(lǐng)域。
SHAW 152-DHML 50PSI@400F STAINLESS DISC 150 FLANGED 4IN

6SN1114-0AA02-0AA0
SHAW 152-DHML 150 STEEL STAINLESS DISC FLANGED 3 IN BUT


TRI CLOVER SANITARY LADISH 2 IN STAINLESS DISC TRI-CLAM


NELES JAMESBURY L12A80AA 3 IN PNEUMATIC 150 STAINLESS B


NELES JAMESBURY L12A150AA 6 IN PNEUMATIC STAINLESS BUTT


KEYSTONE 134 2-1/2IN WAFER IRON STAINLESS BUTTERFLY VAL


NEW BURACCO 624T MANUAL 5 IN 150 STEEL FLANGED BUTTERFL


JAMESBURY 815W112236TT 150 STEEL WAFER FLANGE 4 IN BUT


KEYSTONE 134 2-1/2 IN IRON STAINLESS WAFER BUTTERFLY VA


SURE SEAL BFV-1252 150 STAINLESS FLANGED 4 IN BUTTERFLY


NELES JAMESBURY 6 IN PNEUMATIC STAINLESS WAFER BUTTERFL


SURE SEAL 4 IN PNEUMATIC STAINLESS FLANGED BUTTERFLY VA

BRAY 90-0630-21320-5?32 3IN IRON ACTUATOR BUTTERFLY VALV


STOCKHAM LD712-BS3-E 6 IN 250 ALUMINUM-BRONZE?FLANGED BU


NELES JAMESBURY 8063-TAM00B WAFER-SPHERE FLANGED 4IN BU


DRESSER 4-310-W T.S.L NIL-COR 4IN IN BUTTERFLY VALVE B4


SHAW 152-DHML 285PSIG WCB 150 STEEL STAINLESS DISC 3 IN


NELES JAMESBURY 6 IN PNEUMATIC STAINLESS WAFER BUTTERFL


TRI CLOVER SANITARY TRI-CLAMP STAINLESS 1-3/8IN BUTTERF


Z01AWN 150 STAINLESS STAINLESS FLANGED 6 IN BUTTERFLY V


DEZURIK 9758614 BGS IRON STAINLESS FLANGED 3 IN BUTTERF


JP 80-3 UPVC 150PSI MANUAL FLANGED 3 IN BUTTERFLY VALVE


EBRO EB8 5 IN PNEUMATIC STEEL STAINLESS BUTTERFLY VALVE


INOX-TECH STAINLESS 1-3/8 IN ID 2IN OD BUTTERFLY VALVE 


BRAY 2 IN IRON BODY STAINLESS DISC WAFER BUTTERFLY VALV


DEZURIK 9486570R009 STYLE B0S-US CWP 200 STAINLESS 4 IN


G&H 1-1/2 IN PNEUMATIC STAINLESS TRI-CLAMP BUTTERFLY VA


TRI CLOVER LOCKING CLAMP STAINLESS TRI-CLAMP 2 IN BUTTE


JP 100-4 UPVC MANUAL FLANGED 4 IN BUTTERFLY VALVE B2479


KEYSTONE 990 4 IN PNEUMATIC IRON STAINLESS FLANGED BUTT


SURE SEAL 4-899-7550515 209 STAINLESS WAFER FLANGE 4 IN


KEYSTONE 2F990 150 STAINLESS DISC FLANGE 2IN STEEL BUTT


TRI CLOVER SANITARY LADISH 1 IN STAINLESS DISC TRI-CLAM


EBRO EB5 2 IN PNEUMATIC STAINLESS STAINLESS BUTTERFLY V


G&H 1 IN PNEUMATIC STAINLESS TRI-CLAMP BUTTERFLY VALVE 


NELES JAMESBURY LW5CBA14AACCT NELDISC 12 IN STAINLESS B


CANDIGRA 1-1/2 IN MANUAL STAINLESS TRI-CLAMP SANITARY B


CANDIGRA 2002 AIR TRI CLAMP PNEUMATIC STAINLESS 1-3/4 I


NEW BRAY 6I01A IRON STAINLESS FLANGED 2IN BUTTERFLY VAL


NELES JAMESBURY L12A150AA 150 STAINLESS STAINLESS 6 IN 


CANDIGRA SANITARY FLOW CLOVER 3 IN STAINLESS TRI-CLAMP 


NELES L15CMF04AACA 150 WAFER STAINLESS 4IN BUTTERFLY VA


BRAY 91-2103-21320-5?32 11 IN ELECTRIC STAINLESS WAFER B


NEW BRAY 20-124-2 MANUAL 150 IRON 2 IN BUTTERFLY VALVE 


G&H SANITARY 2 IN PNEUMATIC STAINLESS TRI-CLAMP BUTTERF


NEW STAINLESS TRI-CLAMP 6 IN BUTTERFLY VALVE D352120


BRAY 90-0630-21320-5?32 ACTUATOR 140PSI PNEUMATIC 2 IN B


CANDIGRA SANITARY 1-1/2 IN STAINLESS TRI-CLAMP BUTTERFL


VICTAULIC V0403524-W2 300PSI PNEUMATIC 125 4 IN BUTTERF


TRI CLOVER ACTUATOR STAINLESS FLANGED 2 IN TRI-CLAMP EN


TRI CLOVER ACTUATOR STAINLESS 2-1/2 IN TRI-CLAMP BUTTER


G&H LKB 2 IN PNEUMATIC STAINLESS STAINLESS TRI-CLAMP BU


NEW FISHER E-DISC 600 STAINLESS WAFER BUTTERFLY VALVE D


NEW NELES JAMESBURY 815L113600XZ 8IN 150 STAINLESS BUTT


BRAY 50 3 IN PNEUMATIC STAINLESS FLANGED BUTTERFLY VALV


DEZURIK 2100318R000 150 STAINLESS FLANGED 2IN BUTTERFLY


KEYSTONE 990 4 IN PNEUMATIC IRON STAINLESS BUTTERFLY VA


TRI CLOVER TRI-CLAMP PNEUMATIC ACTUATOR STAINLESS 3IN B


G&H SANITARY 1IN PNEUMATIC STAINLESS STAINLESS TRI-CLAM


NEW KEYSTONE 990 3IN STEEL WAFER RESILIENT SEAT BUTTERF


FISHER A41 POSI-SEAL 2 IN 150 STEEL STAINLESS WAFER BUT


FISHER A41 POSI-SEAL 3 IN 150 STAINLESS WAFER BUTTERFLY


FISHER 8560 1052 PNEUMATIC 150 8 IN BUTTERFLY VALVE 360


TRI CLOVER SANITARY 4 IN STAINLESS TRI-CLAMP BUTTERFLY 


KEYSTONE 990 3 IN PNEUMATIC IRON STAINLESS WAFER BUTTER


FISHER A41 POSI-SEAL 3 IN PNEUMATIC 150 STAINLESS WAFER


SHAW 152-DMHL 285PSIG WCB 150 STEEL STAINLESS DISC 4 IN
G&H 2 IN PNEUMATIC STAINLESS STAINLESS TRI-CLAMP BUTTER

EBRO EB8 V2201-3/A-C 8 IN PNEUMATIC STAINLESS BUTTERFLY6SN1114-0AA02-0AA0