ABB ACSM1 Series, Manual

Page: 404 / 510

Standard function blocks
404
Timers
MONO
(10057)
Illustration
Execution time 1.46 µs
Operation The output (O) is set to 1 and the timer is started, if the input (I) is set to 1. The output is
reset to 0 when the time defined by the time pulse input (TP) has elapsed. Elapsed time
(TE) count starts when the output is set to 1 and stops when the output is set to 0.
If RTG is 0, a new input pulse during the time defined by TP has no effect on the
function. The function can be restarted only after the time defined by TP has elapsed.
If RTG is 1, a new input pulse during the time defined by TP restarts the timer and sets
the elapsed time (TE) to 0.
Example 1: MONO is not re-triggable, i.e. RTG = 0.
Example 2: MONO is re-triggable, i.e. RTG = 1.
Inputs Re-trigger input (RTG): Boolean
Time pulse input (TP): DINT (1 =
µs)
Input (I): Boolean
Outputs Output (O): Boolean
Time elapsed output (TE): DINT (1 = 1 µs)
MONO
85
TLA1 1 msec (1)
RTG
TP
I
O
O(85)
TE
TE(85)
I
O
RTG = 0, TP = 4 s
0 1
t / s
2 3 4 5 6 7 8 9 10
4 s
4 s
TE = 0 s
TE = 4 s
TE = 0 s
TE = 4 s
TE = 0 s
I
O
RTG = 1, TP = 2 s
0 1
t / s
2 3 4 5 6 7 8 9 10
2 s
TE = 0 s
TE = 2 s
* TE is set to 0.
* * * *