Integrated Timer St - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (1/2)
4 Explanation of Devices
4.4 Detailed Explanation of Devices

4.4.8 Integrated Timer ST

The 100 ms integrated timer is available for this count-up type timer.
100 ms integrated timer
ST
 When the input conditions are set, the count starts. When the set value is counted, that timer contact will turn ON.
 Even the input conditions are turned OFF, the 100 ms integrated timer current value (count value) will be held, and the contact
state will not change.
 The 100 ms integrated timer count value will be set to 0 and the contact will turn OFF when the RST instruction is executed.
X5
Input conditions
100ms integrated timer
X7
RST ST47
Reset input ST47 reset instruction
ST47 current value
 The value is set with a decimal, and can be designated from 1 to 32767 (0.1 to 3276.7 (s)). The data register D or file register
R data can be used as the setting value.
 When the bit selection parameter is set, the 100 ms integrated timer current value (count value) will be held even when the power
is turned OFF.
 Handling the device ST types
With the device ST, the contact/coil is handled as bit device, and the current value is handled as word device.
In the function instructions described after, the word device T indicates the current value even if there is no description about
it.
 Setting the timer setting value from the setting and display unit
The number of points of the variable and fixed can be set with the bit selection parameter in the same manner as timer T.
Variable integrated timer
Number
Range
of points
0
20
(0 to 19)
40
(0 to 39)
64
(0 to 63)
In the same manner as timer T, a bit selection parameter is provided as a switch for the variable integrated timer to invalidate
all of the setting values set from the setting and display unit and validate the setting values in the sequence program. (This bit
is used for both the timer T and integrated timer ST.)
IB-1501667-B
K100
ON
ST47
OFF
X5
OFF
X7
ON
9 seconds
OFF
ST47 coil
OFF
ST47 contact
0 1
Bit selection (#6453)
Bit 7 Bit 6 Bit 5
0 0 0
0 0 1
0 1 0
0 1 1
9 seconds
1.5 seconds
ON
1 second
ON
90 91 100 0
Remarks
Use all points as fixed integrated timer
Use range other than that shown on
left as fixed integrated timer
Use 64 points as variable integrated timer
44
6 seconds
6 seconds
1 60