Mitsubishi Electric MELSEC iQ-R Series - Page 466

464
27 DEVICES
27.3 User Device
Ex.
In the case where the values are set as follows (timer setting value: 2 (2  100ms), scan time: 110ms, and timer limit setting:
100ms), when the coil of the timer (T0) turns on in the next scan after the coefficient of the END instruction becomes equal to
or higher than the timer setting value, the coil and the contact turn on at the same time because the timer current value
becomes equal to the timer setting value at startup of the timer.
■Precautions in redundant mode
For precautions on timers and timer function blocks at system switching, refer to the following.
Page 442 Precautions on timers and timer function blocks
(1) The coefficient of the END instruction becomes equal to or higher than the timer setting value. Therefore, when the coil turns on during this period, the
contact also turns on at the same time.
X0
Coil of T0
Contact
of T0
Count at
execution
of the END
instruction
100ms
counting
Current
value of T0
Program
Timer setting value
Scan time
(110ms)
Timer limit setting
(100ms)
Timer setting value
(2 100ms)
110ms 110ms 110ms
END
00 02
11 2 1
OFF
ON
ON
ON
OFF
OFF
END END END
X0
K2
T0
1121
(1)