Drive Command

The command name is drive, as on other instruments. dr may be defined as an alias.

Motors are driven as on other SICS instruments. With a single drive command several motors may be driven.

Driving in reciprocal lattice units

Drive within scattering plane:

drive qh qh qk ql en

(sinals an error when outside scattering plane):

If en (the energy transfer value) is omitted, the energy transer is assumed as zero (in contrast to TASMAD, where it is the last used value). It is an error to give less than 3 numbers, or to drive outside the scattering plane.

To drive in 3 dimensions:

drive q3 qh qk ql en

For powders (no more switch, qm is in Å-1):

drive qm qm en

Driving the energy transfer alone is also possible, (using the last given q values):

drive en en

Analyzer and monochromator energies are represented by the virtual motors

ei ki ef kf

as in TASMAD.

An error is signaled:

• when real motors are mixed with virtual motors like qh, en or kf
• when incompatible virtual motors are driven (like qh and qm)