KEB COMBIVERT R6-S Applications Manual page 118

Special functions
Timer / Mode (LE.21 / LE.26)
LE.21 and LE.26 determine the clock source and the counting direction of timer 1 and 2. Clock pulse source can
be the time counter in 0.01s or 0.01h grid, pulses from a digital input. The timer runs generally as long as a star-
ting condition is active. After a reset the timer starts again at zero. Following clock sources can be selected:
Bit Meaning
Selection clock
0...2
pulse source
Counting direc-
3, 4
tion
Timer / start condition (LE.18 / LE.23)
The conditions when the timer is started can be selected from the following table. The individual conditions are
OR-operated with the timer start input selection (LE.17/ LE.22).
LE.18 / LE.23: Timer / Starting condition
Bit Value
0 1
1 2
In case of several starting conditions the values are to be added up.
Timer start input selection (LE.17 / LE.22)
Additionally the timer can be activated by one or several inputs. The sum of the valences is to be entered, if
the timer shall be started by different inputs The individual inputs are OR-operated. The start input selection is
OR-operated with the timer / starting condition (LE.18 / LE.22).
Page 3.8 - 4
LE.21 / LE.26: Timer 1 / 2 Mode
Value
0: 0,01s (internally clock)
1: 0,01h (internally
clock)
2: every slope T1-I3 /
T2-I4
3: positive slope T1-I3 /
T2-I4
4...7: reserved
0: Upward
24:downwards
Timer / Starting condition
Modulation on
Modulation off
COMBIVERT R6-S
Explanation
The timer value increases / decreases every 10 ms by
0.01.
The timer value increases / decreases every 36s by
0.01.
Each slope on I3 (for timer 1) or I4 (for timer 2) incre-
ases / decreases the timer value by 0.01.
A rising slope on I3 (for timer 1) or I4 (for timer 2) incre-
ases / decreases the timer value by 0,01.
The counting direction of the timer is always upwards
© KEB, 2008-02