joshi171

MrPLC Member
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Everything posted by joshi171

  1. Mode selection in PCS7 charts

    Hi, I am facing a difficulty in chart preparation (CFC) for analogue signals in Siemens PCS7. It is because of the automatic connection of the mode signal during compilation. I am using PCS7AnIn as a channel driver to convert the HEX values. Because of the wrong mode selection by module (#109), the converted values are not linear and incorrect. Even I am not able to enter the mode value manually. What it makes to change the mode value so that I can get the actual result.   Thanks in Advance, GJ   
  2. Mode selection in PCS7 charts

    Hi, I am facing a difficulty in chart preparation (CFC) for analogue signals in Siemens PCS7. It is because of the automatic connection of the mode signal during compilation. I am using PCS7AnIn as a channel driver to convert the HEX values. Because of the wrong mode selection by module (#109), the converted values are not linear and incorrect. Even I am not able to enter the mode value manually. What it makes to change the mode value so that I can get the actual result.   Thanks in Advance, GJ   
  3. Simulation in Foundation Fieldbus

    Hi Guys,  Did anyone performed the process value simulation of Rosemount 5300 Level Transmitter (FF Communication) using Emerson 475 communicator? The simulation jumper is not available physically on the device. The only simulation option in the hand held communicator available in the following path.  Configure>>Manual Setup>>Classic View>>Advanced Transducer Block>>Parameters1.. But that option too is highlighted and not editable. Can anybody help me how to simulate the value from device so that I can check in my host DCS (Siemens PCS7). Thanks in Advance, GJ 
  4. FF Communication - Voltage drop

    Hello everyone, I am working on foundation fieldbus protocol with PCS7. I am facing problem of voltage drop in successive AFDiS (Active Field Distributor). As part of the DCS hardware I am using CP443-5 EXT.-->FF Link (Redundant)-->FDC157-->AFDiS1-->AFDis2-->AFDiS3. The architecture is daisy chain not the loop. I have checked the current consumption using fieldbus calculator. But everything is fine as per calculation. Even I had tried connecting the AFDiS one by one and also with no load condition. I didn't find solution to this problem. I am attaching hereby the sheet of values which I obtained after connecting trunk and spur stepwise and measure voltage at each point. However when I am using AFD in combination with AFD, the amount of voltage drop is not that much significant. Please advise a possible solution. Thanks in Advance, Gaurav J
  5. PCS7 - FF Communication

    Hello Everyone, In PCS7 hardware configuration, I have connected IM153-2 FF link to a profibus master connected with CP443-5 Ext. And afterwards I have connected the field instrument with FF communication with the slave bus on FF link. However I am not able to delete the equipment once connected. The error is showing as the object is locked. How to unlock and delete the objects which were takes for testing purpose. Thanks in Advance, GJ
  6. Hello everyone, I am new to the automation and communication industry. I have a query regarding the TCP/IP communication. I am using Siemens PLC which supports TCP/IP protocol. The PLC is communicating to a server in control room and server again is connected to the existing centralized network through switch. Now we have to connect some additional pumps into our PLC. These pump controller supports Modbus over TCP/IP protocol and it has RJ45 connectivity as well. I need to connect them such a way so that there is no disturbance in the existing centralised network related to IP conflicts. Suggest me the best possible way to connect those pumps. Thanks in Advance