Toshiba Programmable Controller PROSEC T3 - Manual (Page 25)

1. System Configuration
Operation mode switch :
Position of
the switch
Function
HALT
User program execution is hatted (HALT mode).
Changing the operation mode by the programmer is invalid.
Normally programming is done in this state.
RUN
When the operation mode switch is changed to RUN,
the user program execution is started (the RUN mode).
Changing the operation mode from the programmer is possible.
P-RUN
When the operation mode switch is changed to P-RUN,
user program execution is started (the RUN mode).
Changing the operation mode from the programmer is possible.
The user program and leading 4K words of data registers (D)
are write-protected.
The table below shows the initial operation modes after power ON
depending on the Operation mode switch and RAM/ROM switch
status.
RAM/ROM
switch
Mode
switch
Mode after
power on
Remarks
RAM
HALT HALT
RUN HALT
The CPU module is started in the HALT
mode and then waits for the RUN
command from the programmer,
or for a change-over of ttie operation
mode switch (->HALT->RUN). P-RUN HALT
ROM
HALT HALT
The user program is transferred in
accordance with the conditions
mentioned in the table on the preceding
page. RUN RUN
P-RUN RUN
The program transfer is not executed.
The CPU module is started based on
the contents of RAM.
NOTE (1) When power is turned on while the RAM/ROM switch
BAM, user program execution will not be started.
Regardless of the type of CPU module, therefore, the
RAM/ROM switch should be set to ROM for normal
operation.
(2) When the Operation mode switch is changed to RUN
while theRAM/ROM switch is in ROM, the program
transfer is executed, according to the conditions
mentioned in the table on the preceding page, before
the CPU module starts operation.
(3) For details on operation modes, see "T3 User's
Manual-Functions" in a separate volume.
User's manual - Hardware
17