GE 90-30/20/Micro manual Parameters, Valid Memory Types, Parameter Description

4

_____

(enable)	Q
0.10s
(reset) —R
(preset value) —PV

_____

(address)

Parameters:

Parameter			Description
address	The ONDTR uses three consecutive words (registers) of %R memory to store the
	following:
	•	Current value (CV)	= word 1.
	•	Preset value (PV)	= word 2.
	•	Control word	= word 3.
	When you enter an ONDTR, you must enter an address for the location of these
	three consecutive words (registers) directly below the graphic representing the
	function.
	Note: Do not use this address with other instructions.
	Caution: Overlapping references will result in erratic operation of the timer.
enable	When enable receives power flow, the timer’s current value is incremented.
R	When R receives power flow, it resets the current value to zero.
PV	PV is the value to copy into the timer’s preset value when the timer is enabled or reset.
Q	Output Q is energized when the current value is greater than or equal to the
	preset value.
time	Time increment is in tenths (0.1), hundredths (0.01), or thousandths (0.001) of seconds
	for the low bit of the PV preset value.

Valid Memory Types:

Parameter

flow

%I

%Q

%M

%T

%S

%G

%R

%AI

%AQ

const

none

address

•

enable

•

R

•

PV

•

•

•

•

•

•

•

•

•

•

Q

•

•

•Valid reference or place where power may flow through the function.

4-12 Series 90-30/20/Micro Programmable Controllers Reference Manual–September 1998 GFK-0467K