Drive Command

The command name is DR. The command drive as used at other instruments is available but behaves differently.

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

Driving in reciprocal lattice units

Driving Q:

> 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.

WARNING: The new system allows to drive Q out of plane within the limits of the sample goniometers sgu and sgl. If there is some sample device on thw table which may not be tilted, restrict the movements of sgu and sgl through software limits.

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)