Programming Actions and Conditions
S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01
7-9
Event
Instruction
Address
Identifier
Address
Location
Meaning:
S1, S0, L1, L0,
V1, V0, A1, R1
TD[C]
T
X
Latching on delay, latching behavior of the
timer bit (status of the timer): As soon as the
event occurs, the timer starts. The condition
C is only relevant for the point at which the
timer starts. Once the timer starts, it
continues to run regardless of the interlock
and step activity. During the <time>, the timer
bit is set to "0". The started timer can be
restarted by an event occurring. The timer bit
remains set to "0", the total time the timer
runs is extended by <time>. The timer bit is
set to "1" only after the total time has
elapsed.
<time>
time
S1, S0, L1, L0,
V1, V0, A1, R1
TR[C]
T
X
Reset: As soon as the event occurs [and the
interlock is satisfied], the timer is stopped.
Timer bit (status of the timer) and timer value
are reset to "0".
[ ] = optional supplement to interlock; x = number of the timer
