[Halld-controls] [Dsg-halld_plc] PVs to be added to IOC for display in WEDM

Hovanes Egiyan hovanes at jlab.org
Tue Jul 30 10:16:09 EDT 2019


Tyler,


Nick added an array of booleans for the status of solenoid MPS. It 
translates into two

mbbiDirect EPICS records .


HDOPS gluon02:~> caget -0b 'SOL:i:MPS_Status_Read_BOOL;0'
SOL:i:MPS_Status_Read_BOOL;0   1111000001
HDOPS gluon02:~> caget -0b 'SOL:i:MPS_Status_Read_BOOL;1'
SOL:i:MPS_Status_Read_BOOL;1   10101000
HDOPS gluon02:~>

The first one (";0") keep the lower 16 bits, the second one (";1") keep 
the higher bits.

EDM should be able to display these with byte monitor widget.


Hovanes



On 7/25/19 11:47 AM, Tyler Lemon wrote:
> Hello Hovanes,
>
> For the Solenoid Power supply screen, the PV 
> "SOL:a:MPS_Status_Read_DINT" is the one being parsed in CSS for the 
> status bits.
>
> When caget is used you get:"SOL:a:MPS_Status_Read_DINT 24 1 0 0 0 0 0 
> 1 1 1 1 0 0 0 0 0 0 0 0 0 1 0 1 0 1"
>
> EDM has a byte monitor that can handle up to 16 bits. The array parsed 
> in CSS is 24 elements, it would need to be split up into multiple PVs. 
> On the Solenoid interlocks screen, the "MPS Interlock Sum" status is 
> also pulled out of this array using a script. Since CSS is using 
> scripts to get individual status bits on multiple screens, it may be 
> best to make 24 new, individual Boolean PVs for each status bit.
>
> Also, on the Solenoid Voltages screen, the summed coil voltages below 
> each coil graphic are obtained from a rule in CSS and cannot be 
> displayed in EDM either. Four PVs will also need to be added to an IOC 
> for the voltage sums.
>
> For the FDC chiller screen, the EDM byte monitor may be able to use 
> the existing PVs. I'll look at this this afternoon and let you know if 
> anything needs to be added to an IOC.
>
> Best regards,
> Tyler
>
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