Experimental Physics and
Industrial Control System

<[email protected]> · Mon, 27 Sep 2010 09:43:08 +0100

Emmanual,

If I understand you correctly, motors with asynMotor support this
directly. There is a parameter called "MOTOR_DEFER_MOVES" which, if set
to 1, will buffer any move requests. When it is set back to 0 all moves
are initiated synchronously.

However, you need asynMotor support for your motor controller. By the
sound of it you are trying to control the motor directly, so this isn't
much help.

If your previous post is related (which I assume it is), note that:
 * you need a recent version of EPICS (R3.14.11) to support "long
strings as char waveforms"
 * You should not rename your PV from myStringout to myStringout$. The $
is a field modifier, not part of the PV name. It is only used to tell
the server that this is actually a string, not an array of char.
 * You need to be putting the data into a record field that is large
enough to take the data. Hence, the stringOut record is still limited by
the 40 character hard size of the field definition. If you are using
stream device you can use a waveform record with a FTVL of CHAR or
UCHAR. You can also use the asynRecord.

Cheers,

Nick

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of
[email protected]
Sent: 25 September 2010 03:21
To: EPICS tech-talk
Subject: always more inputs in gensub/asub

I need to compute a command for a synchronous move of 8 motors.
The final command is possibly a long string (if I split it in 2, it
would not be an atomic command!)

I have 7 parameters per motor and one final command line.
How would one program that?

Cascaded gensub is what I would normally do.
But is there a more elegant way?
-- 
Emmanuel

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System