Error: downloadLasSched Error: Missing a publisher VCR for a published parameter.

Question

I'm beginning to learn the Schedule with NI-FBUS Configurator and Dialog utility.
I made a simple schedule with NI-FBUS Configurator , I attached the pictures to show the configurations.  Just one AI block called "AI".
I can download this schedule with configurator.
Schedule:
Function Block Application     
Loop Time = 1 sec, Stale Limit = 1         
AI (AI)             
start time=0 (us) -> stop time=87000 (us)
I made an .ini file :
[Schedule Summary]
versionNumber =1
builderIdentifier = 300
numberOfSubschedules=1
T0=1
; macrocycle of 1000 msecs
macroCycle=32000
[SubSchedule 1]
period=32000
numSequence=1
[Sequence 1-1]
startingTime=0
maxDuration=13
numElement=1
priority1=1
address1=AI.OUT
I use dialog utility to download , but I get the following error:
Error: downloadLasSched Error: Missing a publisher VCR for a published parameter.
I do not knows what´s wrong with my ini file.
Attachments:
Schedule.png ‏18 KB
FunctionBlockApplication.png ‏25 KB

Answer 1

Hi, 
Single block schedule is not a valid publisher-subscriber schedule. In your schedule, AI.OUT acts as the publisher and publishes the data to the network. But there is no subscriber that receives this data. In other word, there is no valid publisher-subscriber VCR.
You need to try schedule that contains at least two blocks and connects each other. One or more VCR will be established.
Feilian (Vince) Shen