Toshiba T2N - Manual (Page 138)

5.RAS Functions
User’s manual 125
The T2N support functions to monitor the status of T2N scan control, are as
follows. (Refer to separate manuals for the programmer for these operation.)
(1) Execution time measurement function
Measures the following execution times. This data can be verified by
reading the programmer.
•
Scan cycle ... present value, maximum value, minimum value (1ms units)
•
Main program execution time ... present value, maximum value,
minimum value (1ms units)
•
Sub program execution time (sub program No. 1) ... present value,
maximum value, minimum value are all the same values (1ms units)
•
Timer interrupt execution time ... latest value, maximum value,
minimum value (0.1ms units)
(2) On-line trace function
This function traces the status during program execution and displays on
the programmer screen (power flow display, register value display) in the
circuit range being monitored by the programmer.
Since this displays data from the point in time that the instruction is
executed rather than at the end of a scan cycle, it is also useful for
program debugging.
(3) Status monitor function
Collects and displays the status of up to 8 points of devices/registers
specified using the auxiliary display functions of the programmer on-line
trace screen, immediately after the point in time when the above on-line
trace is run.
5.5
Execution status
monitoring
1. The scan cycle value includes the scan overhead and all interrupts
occurring during the scan.
2. With the main program and the sub program execution times the
interrupt time for any interrupts occurring are excluded.
NOTE