Toshiba T2N - Manual (Page 141)

5.RAS Functions
128 PROSEC T2N
The following functions are available only when in the DEBUG mode.
(4) Single step execution function
Starts and halts in units of one instruction. The trace of run state is
displayed on the screen being monitored by the programmer.
(5) Single rung execution function
Starts and halts in units of one rung. The trace of run state is displayed on
the screen being monitored by the programmer.
(6) N scan execution function
Starts and halts only with respect to the number of times the specified scan
is run. The trace of run state is displayed on the screen being monitored by
the programmer.
(7) Break point set up function
Starts and halts up to the instruction which is specified as the break point.
The break point can be set in one location only. The trace of run state is
displayed on the screen being monitored by the programmer.
(8) I/O simulation
No batch I/O processing is not performed during scan control. Also if you
run direct I/O instruction, the data exchange with the I/O module does not
take place, and the image table (XW/YW) data is used.
This is used when the program debug is run and is not output to the
external output. The input state can be set up from the programmer. Also
the run state is displayed as on-line trace.
(9) Trace back function
The on-line trace information of the latest 5 scan is stored in the DEBUG
mode except single step execution funtion and single rung execution
function.
This function is effective to check the data changes of each scan.
(Refer to T-PDS commnad reference manual for details of operation in the
DEBUG mode.)