Eurotherm 2416 with et24xx driver cannot set Duration parameter using Program Segment Parameters VI

[SteveP]

I am using the et24xx Instrument Driver with a Eurotherm 2416 temperatrue controller and rs232 serial.   I can configure a Segment Type to either Dwell or Ramp (Time To Target) using Program Segment Type.vi as confirmed on the 2416's front panel display.  But trying to then set the Dwell parameter using Program Segment Parameters.vi results in the dwell time being set to 0.  If I set a non-zero Dwell time using the 2416's front panel, it is set back to 0 when Program Segment Parameters.vi is used  I can use that Program Segment Parameters.vi to correctly set a Ramp Rate for a Ramp (Rate) segment type.  Is there something else or different that needs to be done to set the Dwell parameter ?

Steve

[Sammy Z]

Hi Steve,

What version of LabVIEW are you using?

Thanks,
Sammy Z.

[SteveP]

LV 8.6.1 with Ver 1.2 et24xx of Feb 20, 2009

[Sammy Z]

Hi Steve,

I went over the vis and tried to follow the logic used for the dwell type.  I didn't however see a dewll time value.  Where do you see that?  Would you send a screenshot and I'll try to help you further.

Regards,

Sammy Z.

[SteveP · Accepted solution]

Sammy,

ET24XX Configure OP Program Segment Parameters.vi case #2 Ramp (Time to Target) and case #3 Dwell both use the Duration parameter.  I now notice Duration is interpreted as millseconds instead of as seconds and that solves my problem.

I did notice that Ramp (Time to Target) uses ET24XX Utility Write to Register - Millseconds and the VI there does not have its Unit Address input wired to anything.  Case #3 Dwell uses the same VI and does have its Unit Address wired to the front panel value.

 Steve