piezo_gcs.mac $Revision: 1.2 $ |
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Description:
Macros to control a piezo PI controller connected via GPIB line.
ONLY GCS (General Command Set) compatible PI controller
can be driven by this macro set.
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Documentation:
DESCRIPTION
This macro file allows to connect a piezo to a macro motor in SPEC.
Controllers currently supported are:
- PI E-516 (GPIB)
-
For debug purpose mainly, it's also possible to configure a macro
counter that will read the position of a piezo axis. But to avoid
duplicating parameters, the counter has no parameter and takes them
from its corresponding macro motor. In order to guess the motor
to use, the name of the counter must be the same as the motor with
\"_c\" added at the end.
For instance: \"nnn_x_c\" for \"nnn_x\"
SETUP
In order to configure a macro motor:
- 1)
You must have a "MOTORS" defined with:
- DEVICE
set to "piezogcs"
- TYPE
set to "Macro Motor"
- ADDR
set to the GPIB_Address of the controller
- NUM
must be set also
- 2)
Per piezo axis you must define a motor with:
- Controller
set to "MAC_MOT"
- Unit
field must be set to the "MOTOR" entry.
- Chan
field must be set to the piezo axis of the controller
(for instance "0" stands for axis "A", "1" for "B" etc)
- 3)
In the config file add for each motor (WARNING: these
parameters are critical and can damage your hardware if wrong. They
are specific to each axis and not to the controller. Therefore
check with Electronics Group the value and DO NOT
copy/paste these values)
- MOTPAR:a7 = mu/V
resolution in micron per volt (ex: 35)
- MOTPAR:a9 = Vout/Vcmd
ratio out volt / command volt (ex: 10)
- MOTPAR:deadtime = seconds
sleep time after a motion (ex: 0.1)
In order to configure a macro counter:
- 1)
You must have a "SCALERS" defined with:
- DEVICE
set to "piezogcs_c"
- TYPE
set to "Macro Counter"
- NUM
must be set also
- 2)
Per piezo axis you must define a counter with:
- Device
set to "MAC_CNT"
- Mnemonic
must the motor mne plus "_c"
- Unit
do not mind
- Chan
do not mind
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Macros:
piezogcsdebug
Usage: piezogcsdebug [personal msg]
Switch on or off the print of debug messages
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Internal Macros:
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piezogcs_checkctl
Usage: piezogcs_checkctl()
Check if controller was well configured
piezogcs_getch
Usage: piezogcs_getch(ch)
Convert channel from digit to single ASCII char
piezogcs_config
Usage: piezogcs_config(num,type,p1,p2,p3)
MACRO MOTOR:
Called by spec after reading the config file
piezogcs_getpos
Usage: piezogcs_getpos (motor_num)
MACRO MOTOR:
return the position read from the controller
piezogcs_cmd
Usage: piezogcs_cmd(num,key,p1,p2)
MACRO MOTOR:
Called by spec on motor operation.
piezogcs_c_config
Usage: piezogcs_c_config(num,type,p1,p2,p3)
MACRO MOTOR:
Called by spec after reading the config file
piezogcs_c_cmd
Usage: piezogcs_c_cmd(num,key,p1,p2)
MACRO MOTOR:
Called by spec on counter operation.
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Filename: | piezo_gcs.mac |
Author: | BLISS 2006 |
Last mod.: | 30/04/2008 10:51 by rey |
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