Siemens Simatic S7-300 - Page 9

Table of contents
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
ix
4 Priniples of analog value processing ...................................................................................................... 4-1
4.1 Overview ....................................................................................................................................
4-1
4.2 Wiring transducers to analog inputs ..........................................................................................
4-1
4.2.1 Wiring electrically isolated transducers......................................................................................
4-3
4.2.2 Wiring electrically non-isolated transducers ..............................................................................
4-5
4.3 Connecting voltage transducers ................................................................................................
4-7
4.4 Connecting current transducers.................................................................................................
4-8
4.5 Wiring resistance thermometers and resistors ........................................................................
4-10
4.6 Wiring thermocouples ..............................................................................................................
4-12
4.6.1 Connecting thermocouples with internal compensation ..........................................................
4-15
4.6.2 Connecting thermocouples with external compensation .........................................................
4-16
4.7 Connecting loads/actuators to analog outputs.........................................................................
4-20
4.7.1 Connecting loads/actuators to voltage outputs........................................................................
4-21
4.7.2 Connecting loads/actuators to current outputs ........................................................................
4-23
5 Representation of the analog values of analog modules.........................................................................
5-1
5.1 Representation of the analog values of analog input channels.................................................
5-2
5.2 Representation of the analog values of analog output channels.............................................
5-18
5.3 Setting the measuring method and ranges of analog input channels......................................
5-21
5.4 Reactions of the analog modules.............................................................................................
5-23
5.4.1 Influence of the supply voltage and operating mode ...............................................................
5-23
5.4.2 Influence of the range of analog values...................................................................................
5-25
5.4.3 Influence of operational limits and basic error limits................................................................
5-26
5.5 Conversion and cycle times of analog modules ......................................................................
5-27
5.6 Settling and response times of analog output channels ..........................................................
5-30
5.7 Programming analog modules.................................................................................................
5-31
5.7.1 Parameters of analog input modules .......................................................................................
5-31
5.8 Diagnostics functions of analog modules ................................................................................
5-32
5.8.1 Diagnostic messages of analog input modules .......................................................................
5-33
5.8.2 Diagnostics messages of analog output modules ...................................................................
5-33
5.8.3 Causes of error and troubleshooting at analog input modules ................................................
5-34
5.8.4 Causes of error and troubleshooting at analog output modules..............................................
5-34
5.9 Interrupts of analog modules ...................................................................................................
5-35
6 Analog modules......................................................................................................................................
6-1
6.1 Steps from the selection of analog modules to commissioning.................................................
6-2
6.2 Module overview ........................................................................................................................
6-3
6.2.1 Analog input modules: ...............................................................................................................
6-3
6.2.2 Analog output modules: .............................................................................................................
6-6
6.2.3 Analog IO modules: ...................................................................................................................
6-7
6.3 Analog input module SM 331; AI 8 x 16 Bit; (6ES7331-7NF00-0AB0)......................................
6-8
6.3.1 Measuring methods and ranges ..............................................................................................
6-13
6.3.2 Adjustable parameters.............................................................................................................
6-13
6.3.3 Additional information on SM 331; AI 8 x 16 bit.......................................................................
6-15