1/8/2011 7:38 PM | |
Posts: 32 Rating:
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Hello All, I know what PIB is, but forgot what is the xxx follows is.. for example: move PIB1 to IB1 What does the 1 stands for? TIA! |
1/8/2011 9:19 PM | |
Joined: 9/27/2006 Last visit: 9/10/2024 Posts: 12282 Rating:
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Hello LostPatrol; Peripherical addresses are always Immediate Read equivalentss, they do not go through the input image table, so they are accessed directlywhenever you read them in your program. If you read the value at PIW256, for example, if that is the address attributed to your analog channel in HWConfig, then you will see the raw value of the analog value which is either 0-27468 or ±27468 (exception, RTDs and thermociouple inputs). See the chapters on analog value representation in the S7-300 Module Data manual for more information: SIMATIC S7-300 Product Information on SIMATIC S7-300 Automation System Module Data Generally we use FC105 "SCALE" from the TI-S7 conversion library to convert this raw value to an engineering unit that we are more confortable with, percentage, gpm, cfm, etc... Hope this helps, Daniel Chartier |
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