Toshiba SX 2000 - Manual (Page 28)

1.2 S2T CPU Module
1.2.2 Status display LEDs
These LEDs show operation states of the S2T.
Status display LEDs
Name Display States Remark
RUN (Green) Lit Operating state (RUN Mode)
Blink HOLD Mode
Out Stopped state (HALT Mode) or Error Mode
FLT (Red) Lit CPU abnormal or I/O abnormal
Blink CPU abnormal
Out Normal
BAT (Green) Lit Battery normal
Blink Battery caution
Out Battery abnormal or no battery
1.2.3 Operation Mode Switch
The Operation Mode Switch is provided on the CPU module.
This switch controls S2T operation (RUN/HALT).
HALT-----------------Stop user program execution (HALT mode) A
U
RUN -Start user program execution (RUN mode)
CPU status is shown below after power up or after the operation mode is changed to
RUN from H ALT mode.
Setting
Position
Initial Load Program
exe: executed
-: not executed
Operation
mode
Operation Mode
Change by the
Programming tool
HALT SW-1=OFF exe HALT Not available
SW-1=ON -
RUN SW-1=OFF exe RUN available
SW-1=ON -
As shown the above table, initial load (user program transfer from Flash ROM to
RAM) performs when setting SW-1 to OFF.
NOTE
i. The operation mode switch is set to HALT at the factory.
ii. Normally the programming is activated in the HALT mode,
ill. For details of the operation mode, see "S2T user's manual".
iv. The RAM is back-up by both internal capacitor and built-in battery of the S2T. When they go
down and the S2T can't keep retentive area in the RAM, CPU checks user program BCC.
CPU registers error if error is occurred.
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