Mitsubishi Q00JCPU User Manual page 645

10
DEVICE EXPLANATION
(5) High-speed timers
[Ladder example]
[Time chart]
CPU module
Measurement units
(b) Measurement units
The default time measurement units setting for low speed timers is 100 ms.
The time measurement units setting can be designated in 1 ms units within a 1 ms
to 1000 ms range.
This setting is designated at the "PLC system" tab screen in the "(PLC)
Parameter" dialog box.
(a) Definition
High-speed timers provide higher measurement accuracy than low-speed timers.
The measurement units for each CPU are shown in Table 9.
The timer is valid only while its coil is ON, and has a symbol "H".
The time measurement begins when the timer's coil switches ON, and the contact
switches ON when the time elapses. When the timer's coil switches OFF, the
current value becomes "0", and the contact switches OFF.
X0
ON
X0 OFF
T200 coil OFF
T200 contact
OFF
Figure 10.22 Ladder example and timing chart of high-speed timer
(b) Measurement units
Measurement units are set in the PLC system tab of the PLC parameter dialog
box.
Table10.7 Measurement units in each CPU
High Performance model QCPU,
Process CPU and Redundant CPU
0.1 to 100ms(0.1ms units)
High-speed timer display
When X0 switches ON, the T200 coil switches ON, and
H K50
the contact switches ON 0.5 second later. (The high-
T200
speed timer measures time in 10 ms units.)
ON
0.5s
ON
Basic model QCPU,
10.2 Internal User Devices
Universal model QCPU
0.01 to 100ms(0.01ms units)
10
10.2.10 Timer (T)
9
10
11
12
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