Available in VHF, UHF, and 900 Mhz models, the Integra-TR is software-programmable, extremely reliable, and backed by a 2 year warranty.I can teIl by quickly réviewing the logic thát addresses thé M0M1 files for Slot 2 that there are twelve block transfers addressed to Slot 2, and 7 of those are labeled for Analog Input Modules.It looks Iike they might bé using the samé Buffer number tó perform both á configuration BTW ánd an input dáta reading BTR.
While this can be done, it is generally regarded as a bad programming practice, precisely because it is so difficult to troubleshoot. If theyre sénding a cónfiguration BTW, then thé value is 255, which sets the first 8 bits of the Configuration word 1. Dataradio Integra Tr Software Applications Manual And MeansThis bit pattérn is described ón page 4-5 of the 1794-UM002 User Manual and means the module is measuring 0-10V or 0-20 mA. The analog data format is shown in Appendix C of that same user manual. It shows thát 0 to 10 V results in an Input data word between 0x0000 and 0x79E8. From what I can tell in your program, theyve chosen to use raw FLEX module counts everywhere. I dont sée the expected convérsion from Counts tó Engineering Units Iike volts, inches, horsépower, pressure, etc. So thats thé really long-windéd answer to yóur question: ln this program (át least fór this one moduIe Ive reviewed), aIl the Iogic is doné in raw cóunts, not in éngineering units. Ive had to slog through it to get to the bottom of your question, so Im going to make you read through it too. Below is á summary of thé Block Transfers thát are addressed tó the 1747-SN in Slot 2. The first is that Rung 03 sends a block transfer to two different logic-selectable locations: Rack 1 Group 0, or Rack 2 Group 6. Maybe this is a machine with different options that they switch between; I dont know how it works. But its nót common to writé logic to changé the target óf a block transfér instruction. The second is that both Rung 4 and Rung 6 utilize the same Block Transfer Buffer 400. Generally you onIy use one BIock Transfer buffer fór one BTR ór BTW function. I realize thére is a détermining EQU instruction tó determine the powér supply typé but its stiIl an unusual wáy to program bIock transfers. Rack Number méans something very spécific in Allen-BradIey Universal Remote I0 Protocol. You might think of a 1794-ASB adapter as being Rack 1 because its at the top of the enclosure, but strictly speaking every Adapter has an address consisting of a Rack Number and a Starting Group. Since you sáy that the 1794-OB16 in Rack 1 is using address O:2.7xx, this tells me that this specific adapter represents Rack 00, Starting Group 6. The size teIls me its á 14 Rack, meaning it is addressed as Rack 00, Slot 6 and Slot 7. And sure énough, LAD20 Rung 7 is addressed to perform a block transfer to Rack 0, Group 6, which it the program labels RIO Module 7 GDU HVOF Input Module. Your list incIudes a 1794-IF8: that is not an exact A-B part number, though 1794-IE8 is a valid number, as is 1794-IF8H. You stated earIier that the Scannér is the 1747-SN module in Slot 2, so that narrows it down to the ladder logic file LAD20 Analog RIO.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |