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sgull

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sgull last won the day on December 24 2018

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About sgull

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  1. Hi Bob Once an alarm has been configured you should see an ALARMS STATUS STRUCT under global tags at the bottom. Click on alarms status struct and you should see a bit for any alarm active. Regards Denis
  2. Hi Borec Com 1 normally will not function if you are connected to your PC at the same time. Did you try communication with the danfoss drive on com 2 and using com 1 to connect the PLC to the PC. Regards Denis
  3. Hi Aus Saragani and Flex got there before me. I find this really handy if the customer wants a copy of the program as it contains all settings as well. Regards Denis
  4. Thanks Flex. Yes, I am aware of this but most places will never check a display until something goes wrong, With the Vision range I used to clone a program once I had a machine set up and all settings entered. This clone contained the program and settings. This program could be left with the customer on an SD card, If the battery or PLC ever failed, the program wold be uploaded to the new PLC along with all settings. I was not aware with UNISTREAM this had to be done with two files. Regards Denis
  5. Thank You. That should work. When all settings are complete I can copy the program and retained tags to DOK. On Battery fail the operator can load the project from DOK and then copy the retained tags back into the program. When I tested this, it copied the program and the Data Table along with the table retained values from the PLC to DOK and back. The other retained values were returned with the "import Retained Tags" command. Thanks for all your help.
  6. Thanks Saragani When the battery fails I will lose the Data Table. I have the Data Table is on the SD card but I still would not be able to load it because the element ^Load DT from file" also needs retained values. I think with Visilogic you could clone a program to the SD card. This allowed you to take the program with all set points etc. and copy them from one PLC to the next. Is this available on Unilogic? Regards Denis
  7. Hi All, I have a Data Table with fixed values that by reading a row and a column I can load a certain value into a program. I have set the Data Table to be retained and when I power down and back up all values are still there. - What happens when the PLC battery dies? Are values in the Data Table still retained? - There is the option to save the Data Table to SD card. Is it possible to load a Data Table, complete with values, from an SD card into the PLC on power up? Regards, Denis
  8. Hi I changed one of these about 6 years ago. You don't change the screen, just the digitizer. At the time the time the part quoted was SA/V570-Front I am not sure if this is an official part number or just the distributors part number. Cost around €50 for the part + delivery and easy to change. Regards Denis
  9. Hi Kratmel. Could you use a small UPS on the PLC? If it is only vital for 15 mins than a small unit would do. You can use a digital input to detect if the plant power has gone off and start your timer. Regards Denis
  10. Voltage control is simpler and easier to measure online. However if you have the switches set to "I" and the correct output from the PLC, there should not be a problem with current. Can you post a quick sketch of how it is wired up? Are you using the 24v of the VFD or the 24v on the PLC supply? Dont worry about the dip switches in the snap in module, these are for analog inputs and not the outputs. Regards Denis
  11. Along with all the checks above you should also check the way the signal is wired. If the inverter needs a passive signal then you must connect the inverter 4-20ma common to the PLC 4-20ma commom (0v). However many inverters need to see there own powered loop. In this case you need to wire as an active input. The fact that the inverter rises rapidly from min to max frequency with such a small increase in the MI value suggests a "clash" of voltages. Regards Denis
  12. I think you have the choice of 2 digital outputs from the IFM unit or 1 digital and 1 analog. You need to decide how you are going to control. You can use two digital and use the sensor settings to control levels or use the 4-20ma to give you a level and program the PLC to switch at specific levels. If you use the analog you need to use an analog input on the PLC.
  13. Hi What addresses is the PLC saying are not supported? Is it O112 to OO127 or some other range?
  14. I think the position you put the RO16 will determine what I/O registers are expected in the PLC. The PLC looks at the modules as if they were directly connected. In the EX-RC1, if you are mapping the outputs to a different address to the expected the PLC will see this as being incorrect. The outputs should still work but you will keep getting this error on compile. See Attached regards Denis IO-RO16-IO-RO16L_540802102.pdf
  15. Hi Try using a positive transition contact on "Video Timer Out" on net 2 You may be calling the screen continuously with the direct contact. Regards Denis
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