Rockwell Automation 1398-PDM-xxx IQ Master Version 3.2.4 for IA-2000 and IQ-5000 Positioning Drive Modules, IQ-55 - Manual (Page 227)

Language Reference • Reference 205
Publication 1398-PM601A-EN-P — October 2000
WORDS
FE Following Error Position
Purpose Following error is the difference between the commanded position and the actual posi-
tion.
Syntax variable = FE
variable Following error in user units. User units are defined by the
SCALE parameter. The variable may be a nonvolatile variable
Gn, a volatile variable Vn, or a system variable.
Remarks
See Also PFE, FEL, FET
Example V3 = FE
FEL Following Error Limit System
Purpose Changes the Following Error Limit (FEL) used in the program. Following Error is the
absolute value of the difference between the commanded position and the actual posi-
tion. If the Following Error is exceeds the FEL for a time greater than the Following
Error Time (FET), a fault occurs and system operation halts. The drive is disabled and
the Error system program is run (see Appendix A).
Syntax FEL = value
variable = FEL
value The value is entered in user units. 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, Gains/Limits dialog box.
See Also FET, FE, PFE
Example FEL = 0.5 ;Set the following error limit to 0.5 user units
FEL = V7
V2 = FEL