Rockwell Automation 1398-PDM-xxx IQ Master Version 3.2.4 for IA-2000 and IQ-5000 Positioning Drive Modules, IQ-55 - Manual (Page 299)

Language Reference • Reference 277
Publication 1398-PM601A-EN-P — October 2000
WORDS
VCMD Velocity Command Velocity
Purpose Velocity command in user units per Timebase.
Syntax variable = VCMD
variable The variable may be a nonvolatile variable Gn, a volatile vari-
able Vn, or a system variable.
Remarks VCMD may not go to zero when the there is no commanded position. VCMD repre-
sents the value that would be sent to a digital to analog converter as a velocity com-
mand if an external amplifier were used. Therefore this command may have an offset
that prevents it from returning to zero when the position command is not changing.
See Also VEL1
Example V1 =VCMD
VEL Velocity Velocity
Purpose Change the present velocity used for MOVD and MOVP calculations.
Syntax VEL = value
variable = VEL
value The value is entered in user units per Timebase. User units are
defined by the SCALE parameter. The value can be a constant,
a nonvolatile variable Gn, a volatile variable Vn, or a system
variable.
variable The variable may be a nonvolatile variable Gn, a volatile vari-
able Vn, or a system variable.
Remarks Changes made to this variable by a program are only in effect while the program is
running. When the program ends it will return to the value stored in the Personality
Module. If no change is made to this variable by the program, the value in the Person-
ality Module is used. The value in the Personality Module is set in the Parameter
menu, Velocity/Accel dialog box.
See Also JVEL, HVEL
Example VEL = 750
VEL = G4