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GFK-0467K Chapter 4 Series 90-30/20/Micro Instructions Set 4-15
4
Parameters:
Parameter Description
address The TMR 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 a TMR, 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. When the
TMR is not enabled, the current value is reset to zero and Q is turned off.
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 TMR is enabled and the current value is greater than or
equal to the preset value.
Valid Memory Types:
Parameter flow %I %Q %M %T %S %G %R %AI %AQ const none
address •
enable •
PV • • • • • • • • • •
Q • •
• Valid reference or place where power may flow through the function.