Parker Products ViX250AE - Manual (Page 58)

4. CONTROL OF VIX DRIVES 51
4. Control of ViX Base Drives
Overview
This section introduces you to the operation of the ViX base servo drive. The drive uses a
sub-set of ViX commands and system variables to support the drive when connected to an
external controller or an analogue input. No programs can be stored in a base drive.
The drive uses RS232 serial communication to send commands to the drive and to receive
status information back.
Direct Mode
Direct operation of the drive is possible over a serial link from a PC or PLC. When used
directly the drive will accept commands prefixed with the axis address and will action the
commands as they are received.
System Variables
System variables are named variables held within the drive’s controller that are used for
storing a variety of system values and settings. Read system variables using the Report
system parameter (R command), but note, you can only write to certain variables using the
Write (W command).