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If the total amount of prism required for a job exceeds that allowed in the generator prism field + maximum blocker prism field (assuming both are >0), then an error is raised when the job is requested by the ART-M (rather than the error being raised when the job is requested by a generator as with other devices).
Settings on the blocker itself
The ART blocker has two connections to Rx-Universe - one to request job information, in which case it acts as a SBK device, and a second session to upload data - this second session needs to be an UPL session.
Settings for the generator interface
If you are running Rx-Universe version 7.35.00 or earlier, and using an ART-M, the blocker does not upload BLKD and RNGH information. If the lab uses ONLY ART blocking, you will need to configure the generator interface to set these values. Do this, on the generator configuration, VCA Over-rides tab, as follows:
Note this is NOT necessary for Rx-Universe version 7.36.00 and later.