Instruction Manual

Pointe Controller User Guide Appendix C: Ladder Diagram Block Reference
353
The Elapsed Time output (ET) shows the time passed since IN became on; in other
words, it shows the current value of the Timer itself. When the Timer reaches PT,
ET remains equal to PT until it is reset. When the Timer is reset to 0, ET is reset to
0.
Configuration Reference
The parameters of this block are described in the following table:
Param Name Config Var Type Description
IN Input
State
no - The state of the rung (off/on)
received from the left.
Q Output
State
no - The state of the rung (off/on)
passed to the right.
TIMER Timer req Timer The Timer variable on which the
function is based.
PT Preset
Time
opt %IUD
%QUD
%MUD
Numeric
The length of the delay, in msecs. If
no Preset Time is defined, then the
preset value of Timer variable is
used.
ET Elapsed
Time
opt %QUD
%MUD
The time elapsed since the Input
State became on, in msecs. In most
instances, the Elapsed Time equals
the current value of the Timer
variable.
C.2.4 Counter, Up (CTU)
When used in a Ladder Diagram, the CTU block increments a counter by 1. It also
sets a “done bit when the counter reaches a preset value.
Select the
tool (from the Timers and Counters Blocks toolbar) and click on a
ladder rung to insert the following block:
Once the block is inserted, you can double-click on it to configure it.