《S7-300开关量控制程序设计方法》.pdf

7 S7300 SIMATIC S7 Date: 2011/3/20 Information and Training Center Siemens AG 2000. All rights reserved. File No.: SSP1_03C.1 Knowledge for Automation 7.1 S7300 7.2 7.3 7.4 7.5 7.6 I/O 7.7 7.8 7.9 PID SIMATIC S7 Date: 2011/3/20 Information and Training Center Siemens AG 2000. All rights reserved. File No.: SSP1_03C.2 Knowledge for Automation 7.1 S7300 STEP 7 A A OB1 OB1 B OB1