encoder

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About encoder

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  • Birthday 10/18/78

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  • Location Christchurch
  • Country New Zealand
  1. Thanks for your responses its great to get some really constructive feedback when making these decisions and certainly easier to decide when properly informed. We have a very small window of opportunity to get this system in and running and because there is also a major mechanical refit, there will be no going back so our solution absolutely must be one that is tried and tested. The upgrade basically removes large shafts which drive multiple gearboxes with smaller drives that are electronically linked and work together in master/slave configuration. The nitty gritty is handled by the servo drives (SEW Drives & motors) but we monitor and compare positioning to check for lag error and sending basic commands, target positions etc. The add on PLC5 DeviceNet scanner is expensive, and not that great so we prefer to use a CMPLGX with DeviceNet Scanner as this allows us to also utilize our most recent methods of servo drive control. Thanks again for your comments and I will continue to add to this topic as decisions are made.
  2. Hi All, We are currently upgrading one of our machines which is controlled with a PLC5/40E I think it is Series E Rev A. The reason I'm not 100% is that it also says DH+/RIO Comm Plug #1 Series/Rev: A/A. (I have included a screen shot of this) Anyway, we are looking at replacing some of the older drives with servo drives in a Master/Slave configuration. For this type of setup we communicate to the drives with a DeviceNet Scanner. Our plan is to use a Compact Logix Processor to control the drives and communicate with the PLC5 over Ethernet via messaging. I have not had any experience with this type of setup and am wondering if anyone knows of any problems we might face. My first concern is the PLC5 FW I believe it will need to be upgraded to at least D.1. I was also wondering what sort of Lag we might experience with the messaging between PLC's setup? Any advice/comments are gratefully accepted
  3. RSView SE VB Scripting

    Thanks for your reply BobLfoot, I can see that your script will work. I think my question wasn't too clear... With RSView It seems that all the scripts are event driven? Is there anything built into the application where I can place some script that will be called continuously? or do I need to patch something together like your example script to simulate this?
  4. Hi All, I am writing some script to check comms between Logix 5000 PLC and SCADA running rsview se. I know what I want for the script, my problem is how to call continuously while the client is running. is there an option for this? Any replies greatly appreciated Thanks
  5. Hi, Yes I have discussed the VBA method and found the following to work I inserted a Numeric Display into a screen that is always open or every screen that would have focus. Then r-click add VBA and the following code ("Alarms Current" being the name of my display) Private Sub NumericDisplay3_Change() If NumbericDisplay3.Value = 1 Then Application.ExecuteCommand "Display Alarms Current" End Sub My display screen opens when the value goes high the only bug is that I receive a runtime script error in studio "Type mismatch" But its working.
  6. Small problem causing a big headache. I am running RSView SE 4.0 and want one of my displays to "popup" when a bit turns true. I have set this up as an event but when the bit turns true nothing happens in the client and in Studio I get a warning which says "the command "Display" is ignored when issued from a development environment or HMI server" Does anyone know why this is happening and how to get around it? thanks