Toshiba T2N - Manual (Page 140)

5.RAS Functions
User’s manual 127
The T2N support the following functions enable the user program to be debugged.
(Refer to separate manuals for programmers for operation of these.)
(1) Input force/coil force function
Batch input data is not updated in the input force specified register/device.
The registers/devices which can be specified for forced input are the input
register/device(XW/X), link register/relay (W/Z) in the receiver area and
link register/relay (LW/L) in the receiver area.
On the other hand, coil force specified coil instruction can not be processed
when the program is running, so despite the run state of the circuit, the coil
device maintains its previous state. The coil force devices which can be
specified as forced coil are the output device (Y), the auxiliary relay (R), the
transmitter area link register relay (Z), and the transmitter area link relay (L).
Simulated input and simulated output are made possible by the combined
use of the input force/coil force function and the data setting function.
(2) Constant operand change function
This function enables to change the constant values of timer and counter
instructions (preset values) and the constant values used in function
instructions in on-line mode (during RUN) .
The constant values for the timer and the counter can also be changed
while in memory protect mode (P-RUN).
(3) On-line program change function
This function enables to change the user program on-line (during RUN).
The changes are made after completion of one scan, so it extends the
inter-scan cycle.
On-line program change is subject to the following conditions.
•
You cannot make changes to the number or order of run control related
instructions (below).
END, MCS, MCR, JCS, JCR, JUMP, LBL, FOR, NEXT, CALL, SUBR,
RET, IRET
•
You cannot change the SFC structure in the SFC program section, but
you can change the action or transition condition (ladder diagram)
which relate to step or transition.
5.6
Debug Support Function