Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	mbboDirect problems
From:	Eric Norum <[email protected]>
To:	EPICS mailing list <[email protected]>
Date:	Mon, 8 Sep 2014 13:49:36 -0700

I have a number of mbboDirect records like:

record(mbboDirect, "$(P)$(R)EVR:event12trig") {

    field(DESC, "Extraction pre-trigger")

    field(DTYP, "asynUInt32Digital")

    field(OUT,  "@asynMask($(PORT) 0x30C 0xFF 0)")

    field(NOBT, "8")

    field(MASK, "0xFF")

}

The IOC starts up and reads back the initial value of this record properly.

The *first* caput to the record (I’ve tried from EDM and from caput) writes the readback value again, not the value from the client.

Subsequent caputs do write the value from the client. It’s only the first operation that uses old data.

Is this a known problem?

--
Eric Norum
[email protected]

Replies:: RE: mbboDirect problems Mark Rivers; Re: mbboDirect problems Andrew Johnson

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ANJ, 17 Dec 2015