Experimental Physics and
Industrial Control System

I’m trying to use pvput to insert EPICS PV names to the channelName array of a NTMultiChannel. I’ve created the NTMultiChannel with a minimum of fields, just for this first test. The error at the output says that “:” is not a known token as it is trying to parse the PV name instead of interpreting it as a generic string. I’m using EPICS base R7.0.3.1 both for the server and the clients.

 

$ pvput GMDTest:NTMultiChannel channelName="[abcdefg,hijklmn]"

Old : epics:nt/NTMultiChannel:1.0

    any[] value

    string[] channelName []

New : epics:nt/NTMultiChannel:1.0

    any[] value

    string[] channelName ["abcdefg", "hijklmn"]

 

$ pvget GMDTest:NTMultiChannel

GMDTest:NTMultiChannel epics:nt/NTMultiChannel:1.0

    any[] value

    string[] channelName ["abcdefg", "hijklmn"]

 

$ pvget GMDTest:NTScalar

GMDTest:NTScalar 0

 

$ pvput GMDTest:NTMultiChannel channelName="[GMDTest:NTScalar]"

Old : epics:nt/NTMultiChannel:1.0

    any[] value

    string[] channelName ["abcdefg", "hijklmn"]

Unknown token ':' in ":NTScalar]"Error: Unknown token

New : epics:nt/NTMultiChannel:1.0

    any[] value

    string[] channelName ["abcdefg", "hijklmn"]

 

$ pvput GMDTest:NTMultiChannel '{"channelName":["GMDTest:NTScalar"]}'

JSON syntax not supported by this build.

 

I’ve tried many combinations of single-quotes and double-quotes in different positions of the command. I’ve also tried a scape symbol “\”, but couldn’t make it work.

 

Thank you,

 

Márcio Paduan Donadio

Control Systems Engineer - SLAC