Mitsubishi Electric M800VW Series Programming Manual page 160

M800V/M80V Series PLC Programming Manual (1/2)
7 Basic Instructions
7.3 Output Instructions
 Functions
 When the operation results up to the OUT instruction are ON, the timer coil goes ON and the timer counts up to the value
that has been set; when the time up state (total numeric value is equal to or greater than the setting value), the contact
responds as follows:
A contact Continuity
B contact Non-continuity
 The following will apply if the calculation result up to OUT instruction changes from ON to OFF.
Type of timer Timer coil
100 ms timer OFF
100 ms retentive tim-
OFF
er
10 ms timer OFF
 The contact status of retentive timer after time-up will not be changed until the RST instruction is executed.
 A negative number (-32768 to -1) cannot be set as the setting value. If a negative value is set for the word device, operation
is carried out taking the value as a positive value with no signs.
 When "0" is set for the set value, time will be up instantly.
 In cases where the OUT instruction is not executed while the OUT instruction is ON due to the JMP instruction, etc., no
present value update or contact ON/OFF operation is conducted. Also, if the same OUT instruction is conducted two or
more times during the same scan, the present value will be updated for the number of times executed.
POINT
(1) Setting the timer setting value from the setting and display unit
The method for setting the value of timer T and retentive timer ST includes the following two ways.
 Method to validate the setting value (Kn) programmed with the sequence program (Fixed timer)
 A method in which the setting value set with the setting display device is validated. (Variable timer)
Refer to "4.4 Detailed Explanation of Devices" for details on variable timer.
 Arithmetic errors
 There are no arithmetic errors associated with the "OUT T □ " or "OUTH T □ " instruction.
Prior to time up
Present value of tim-
er
A contact B contact A contact B contact
Non-con-
0
tinuity
Maintains the present Non-con-
value tinuity
Non-con-
0
tinuity
139
After time up
Non-con-
Continuity Continuity
tinuity
Non-con-
Continuity Continuity
tinuity
Non-con-
Continuity Continuity
tinuity
IB-1501667-B