Drive Command

The command name is DRIVE, as on other instruments. DR is 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:

> DR QH qh qk ql en

If en (the energy transfer value) is omitted, the energy transfer 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:

> DR Q3 qh qk ql en

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

> DR QM qm EN en

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

> DR EN en

Analyzer and monochromator energies are represented by the virtual motors EI, KI, EF and 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)