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MELSEC-Q
7 FUNCTION
a) "Total Scan Time"
The monitor time set in WDT(the watch dog timer) of "PLC RAS" tab
screen in the (PLC) "Parameter" dialog box and total scan time for
each program type are displayed.
1) "Monitor Time"
The monitoring time for the scan execution type program,
initialization program, and low speed execution type program are
displayed.
If the scan time exceeds this time, the High Performance model
QCPU displays the watch dog timer error.
2) "Sum of Scan Time"
The total time in each item stated in "Scan Time Details for Scan
Execution" are displayed.
"Constant" indicates the constant scan waiting time when the
setting is made for constant scan.
b) "Scan Time Details for Scan Execution"
The details of the scan time are displayed.
1) "Program"
The total execution time of the scan execution type program is
displayed.
2) "END operation time"
The END operation time is displayed.
3) "Low speed program"
This indicates the total execution time of a low speed execution
type program when making the setting for the execution time of a
low speed execution type program or constant scan time.
4) "Constant waiting"
The constant scan waiting time is displayed when setting the
constant scan time. However, when the low speed execution type
program execution time is set as well, this value is 0.000 ms.
c) "Each Program Execution Status"
The execution status of program specified at the "Program" tab screen
in the (PLC) "Parameter" dialog box is displayed.
1) "Program"
The program name is displayed in the order set in the parameter.
2) "Execute"
The program type set in the parameter is displayed.
3) "Scan Time"
The actual scan time (current value) is displayed. At the program
stop (wait) status, the scan time is displayed as 0.000 ms.
4) "Execute count"
The number of times the program was executed is displayed,
setting the starting point of when the measurement is started as
"0". The number of execution times is displayed up to 65535 times
and returns to 0 when the 65536th time measurement is made.
The ex times remains even when the program is stopped.
Содержание QCPU (Q Mode)
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