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Sending Ascii commands through RS-232 (NIOPS-4)

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Hello,

 

I am trying to control a power supply (NIOPS-4, attached manual) for an ion pump using basic serial read and write vi (attached), but having troubles with it.

I set baud rate to 115,200 as suggested in the manual and tried simple commands like V<CR>, V, B<CR>, B .. but I get timed out at the read section. I don't see any errors at the write section but "B" command which is supposed to turn off the power supply doesn't really work.

Can anyone tell me what I am missing? Also, what bytes to read should I use?

 

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