esrf

Beamline Instrument Software Support
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QG2.MAC
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Description:
    Macros to control the Queensgate piezos through a serial line.
Documentation:
    DESCRIPTION
    These macros allow to define move and read the position of several Queensgate piezos, and to configure them as pseudomotors
    These piezos are assumed to be controlled through a serial line

    ATTENTION
    • Always put the baud rate to 2400 baud. The controller can not keep up with the high speed of 9600 baud for some commands. Pierre Pinel did some extensive tests in the lab to find that.
    • The offset knob on the controller adds to the voltage applied via the RS232 controlled unit. There are possitions of the knob were the computer can not reach the full range.
    • Reading back the encoder position can only be done with 2 bits less precision and is therefore useless. The current macro set do not read back the position.


Macros:
    qg_mv
    Usage: qg_mv <motor_mnemo> <QG_list_index>
    Moves the associated Piezo with the A[] value
    motor_mnemo : pseudo motor mnemo name
    QG_list_index : index in QG_DEV list

    qgsetup
    Usage: qgsetup <nb_of_qg> <dev_name> <piezo_mne> <module_nb> <length> <scale>...
    creates the queensgate pseudomotors.
    • nb_of_qg : number of devices
      and for each device:
      dev_name
      device server name of the serial line device
      piezo_mne
      piezo mnemonic
      module number
      1,2,3 for M1,M2,M3
      length
      complete length of the piezo,
      scale
      a scale factor. length is multiplied by this factor This allows the length to be the real length of the piezo, and the user to work in his own units.


Internal Macros:
    qg_read
    Usage: qg_read


    qg_init
    Usage: qg_init


    qg_initall
    Usage: qg_initall


    qg_put
    Usage: qg_put(devname, str)


    qg_get
    Usage: qg_get(devname)


    no_cntl
    Usage: no_cntl(str)


Filename: qg2.mac
Author: J.KLORA - MCD 22/1/96
Last mod.: 08/08/2002 14:37 by berruyer