News: persistent I404 USB-Serial converter names, motor unit limits after reboot, macros to avoid timeouts and <nodata>

• I404: The Tango server has been changed. The USBPort property can now be set to the serial no. of the USB converter. The current configuration can be found in the hardware manual.

  To get the serial number of a converter connected /dev/ttyUSB0:

  udevadm info -a -n /dev/ttyUSB0 | grep {serial} | head -n 1
  

  The serial number can also be discovered by a dmesg after a converter has been connected.

• Motor limits changed after PCs have been rebooted. This happened because the limits have been changed in the Tango servers only, not also in the Pool.

  A script has been created,

  SardanaAdjustLimits.py,

  which copies the limits from the Tango servers to the Pool (invoking the adjust_limit macro).

  SardanaAdjustLimits.py is invoked by the PC shutdown procedure.

• Discussion: Possible macros to overcome timeouts and <nodata>.

• SardanaMonitor:
  • 1st point can be zero (slow motors, long move to first point)
  • Cursor widget crashes.

  Several tests have been made, no result. Need more details.

• P65: need to change the slew rate during move. Possible solution: Variable Velocity Contouring feature of the OmsMaxV.