Rockwell Automation 1398-PDM-xxx IQ Master Version 3.2.4 for IA-2000 and IQ-5000 Positioning Drive Modules, IQ-55 - Manual (Page 278)

256 Language Reference • Reference
Publication 1398-PM601A-EN-P — October 2000
WORDS
PZONE Proportional Gain Zone, Velocity Loop Gain
Purpose Set the region in user units around the commanded position where KPZ is used instead
of KP for the position regulator proportional gain. This allows the gain to be raised or
lowered when the actual position is near the commanded position. If PZONE is zero,
the KPZ gain is never active.
Syntax PZONE = distance
variable = PZONE
distance Specifies a distance around the commanded position in user
units. User units are defined by the SCALE parameter. The dis-
tance 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 KPZ, KP, KI, KIZ, IZONE
Example PZONE = 0.2
PZONE = V5
READ Read Operator Terminal
Purpose Read ASCII input from the Operator Terminal or a serial port.
Syntax READ [#n] [row, column] ["message"] , [SHOW] variable [, field, precision[, F]]
[(min, max)]
n Serial port 1 or 2 is specified by n. If a port is not specified, the
output defaults to serial port 1, the Operator Terminal port.
row The row that printing begins on. The top row is 1.
column The column that printing begins on. The left hand column is 1.
message The message is an optional character string that is printed before
the input is accepted. The message must be in double quotation
marks.
SHOW If SHOW is specified, the present value of the variable is dis-
played so you can check the value without entering a new value.
To change the value, enter the new value followed by ENTER; to
leave the present value unchanged, just press ENTER.
variable variable is where the information that is read is stored. variable
may be a G or V variable or a B or F flag variable.
field field is the maximum number of characters to be entered for the
variable including the decimal point. field does not apply when
printing or reading flag variables.