We have coummunicated with Siemens Sinamics G120 Drives Via Profibus DP ,we are reading
Current Feedback - AIRPM feedback-AIStatus Word-AICommand Word-AORPM Setpoint-AO.here, we are consuming 3 AI and 2 AO DST's.
Can We Save 1 AO and 1 AI DST from above Configuration by Modifying Command Word & Status Word ?
Can we use only single Bit for Start Stop Command by changing PZD Configuration ? & Can we read single Bit for Status (Run/Stop Feedback)?
for ready reference i am attaching my control module Screenshot & Profibus device configuration Screenshot.for Details.screenshot.xlsx
Any one hav exp with this...? Please.
In reply to bhushan619:
Yes, you can use single bit to start and stop your VFD. Another way is to use a Boolean fan in and use and external ref to trigger the on/off bit for the VFD from the command word. You will still need to use an AO dst for your VFD speed control. I see you have a Status word as well. I would use the Boolean fan out to see each status and display that on the operator interface. There is a change in dst licensing in DeltaV v12.3.1. DeltaV will only charges you 1 AO dst to do control for this drive. Your other dst (AI, DI, DO) will be at not charge. Note: you will need to send in your database for Emerson to recalculate your dst to credit you back the dst that you were charge in DeltaV v11.3.1. Talk to your Emerson Local Business Partner(LBP). He will know what to do moving to DeltaV 12.3.1. I hope this helps. Best Regards, Tinh
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