Timer instructions
920
Part III FP Instructions
TM_100ms_FB
Timer for 100ms intervals (0 to 3276.7s)
For the TM_100ms_FB function block declare the following:
start start contact
each time a rising edge is detected, the set value SV is copied to the elapsed
value EV and the timer is started
SV set value
the defined ON-delay time (0 to 3276.7s)
T timer contact
is set when the time defined at SV has elapsed, this means when EV becomes
0
EV elapsed value
count value from which 1 is subtracted every 0.1s while the timer is running
Time
chart
start
SV
EV
T
X
0
X
0
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PROG mode
RUN mode
ON
OFF
ON
OFF
The number of available timers is limited and depends on the settings in the system
registers 5 and 6.
The system timer functions (TM_1s, TM_100ms, TM_10ms, and TM_1s) use the same
NUM* address area as the system timer function blocks (TM_1s_FB, TM_100ms_FB,
TM_10ms_FB, and TM_1s_FB). For the timer function blocks the compiler
automatically assigns a NUM* address to every timer instance. The addresses are
assigned counting downwards, starting at the highest possible address. In order to
avoid errors (address conflicts), these timer functions and function blocks should
not be used together in a project.
PLC types Availability of TM_100ms_FB (see page 1332)
Description
This timer for 0.1s units works as an ON-delay timer. If the start contact of the function block is in
the ON state, the preset time SV (set value) is started. When this time has elapsed, the timer
contact T turns ON.
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